| V-98557 | High | CA-TSS Emergency ACIDs must be properly limited and must audit all resource access. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98553 | High | Access to the CA-TSS MODE resource class must be appropriate. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98495 | High | CA-TSS must limit Write or greater access to SYS1.SVCLIB to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98497 | High | CA-TSS must limit Write or greater access to SYS1.IMAGELIB to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98641 | High | The CA-TSS BYPASS attribute must be limited to trusted STCs only. | Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or... |
| V-98863 | High | IBM z/OS UNIX SUPERUSER resources must be protected in accordance with guidelines. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98499 | High | CA-TSS must limit Write or greater access to SYS1.LPALIB to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98459 | High | CA-TSS MODE Control Option must be set to FAIL. | Enterprise environments make account management challenging and complex. A manual process for account management functions adds the risk of a potential oversight or other errors.
A comprehensive... |
| V-98621 | High | The CA-TSS Facility Control Option must specify the sub option of MODE=FAIL. | Utilizing a whitelist provides a configuration management method for allowing the execution of only authorized software. Using only authorized software decreases risk by limiting the number of... |
| V-98541 | High | IBM z/OS must protect dynamic lists in accordance with proper security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98877 | High | The CA-TSS HFSSEC resource class must be defined with DEFPROT. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98471 | High | IBM z/OS SYS1.PARMLIB must be properly protected. | Without the capability to restrict which roles and individuals can select which events are audited, unauthorized personnel may be able to prevent the auditing of critical events. Misconfigured... |
| V-98537 | High | CA-TSS must limit all system PROCLIB data sets to system programmers only and appropriate authorized users. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98535 | High | CA-TSS must limit WRITE or greater access to libraries containing EXIT modules to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98515 | High | CA-TSS must limit access to the System Master Catalog to appropriate authorized users. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98797 | High | IBM z/OS SSH daemon must be configured to only use the SSHv2 protocol. | In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must... |
| V-98601 | High | The CA-TSS PASSWORD(NOPW) option must not be specified for any ACID type. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98523 | High | CA-TSS must limit Write or greater access to SYS1.UADS to system programmers only, and Read and Update access must be limited to system programmer personnel and/or security personnel. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98899 | High | IBM z/OS UID(0) must be properly assigned. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98455 | High | CA-TSS Security control ACIDs must be limited to the administrative authorities authorized and that require these privileges to perform their job duties. | The use of security policy filters provides protection for the confidentiality of data by restricting the flow of data. A crucial part of any flow control solution is the ability to configure... |
| V-98513 | High | CA-TSS security data sets and/or databases must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98743 | High | Unsupported IBM z/OS system software must not be installed and/or active on the system. | Control of program execution is a mechanism used to prevent execution of unauthorized programs. Some operating systems may provide a capability that runs counter to the mission or provides users... |
| V-98747 | High | CA-TSS must be installed and properly configured. | Failure to provide logical access restrictions associated with changes to system configuration may have significant effects on the overall security of the system.
When dealing with access... |
| V-98507 | High | CA-TSS must limit Write or greater access to SYS1.NUCLEUS to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98505 | High | CA-TSS must limit Write or greater access to all LPA libraries to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98503 | High | IBM z/OS libraries included in the system REXXLIB concatenation must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98501 | High | CA-TSS must limit WRITE or greater access to all APF-authorized libraries to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98645 | High | CA-TSS ACIDs granted the CONSOLE attribute must be justified. | Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or... |
| V-98565 | High | IBM z/OS DASD Volume access greater than CREATE found in the CA-TSS database must be limited to authorized information technology personnel requiring access to perform their job duties. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98795 | High | The SSH daemon must be configured to use a FIPS 140-2 compliant cryptographic algorithm. | Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions,... |
| V-98481 | High | IBM z/OS must use NIST FIPS-validated cryptography to protect passwords in the security database. | Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily... |
| V-98853 | High | CA-TSS LOGONIDs must not be defined to SYS1.UADS for non-emergency use. | Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or... |
| V-98657 | Medium | CA-TSS permission bits and user audit bits for HFS objects that are part of the FTP server component must be properly configured. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98655 | Medium | IBM z/OS SMF recording options for the FTP server must be configured to write SMF records for all eligible events. | Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access... |
| V-98559 | Medium | CA-TSS ACIDs must not have access to FAC(*ALL*). | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98653 | Medium | IBM z/OS FTP.DATA configuration statements must have a proper banner statement with the Standard Mandatory DoD Notice and Consent Banner. | Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal... |
| V-98651 | Medium | CA-TSS VTHRESH Control Option values specified must be set to (10,NOT,CAN). | Automatic session termination addresses the termination of user-initiated logical sessions in contrast to the termination of network connections that are associated with communications sessions... |
| V-98555 | Medium | Data set masking characters must be properly defined to the CA-TSS security database. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98785 | Medium | IBM z/OS system administrator must develop a procedure to terminate all sessions and network connections related to nonlocal maintenance when nonlocal maintenance is completed. | If a maintenance session or connection remains open after maintenance is completed, it may be hijacked by an attacker and used to compromise or damage the system.
Some maintenance and test tools... |
| V-98787 | Medium | IBM z/OS system administrator must develop a procedure to remove all software components after updated versions have been installed. | Previous versions of software components that are not removed from the information system after updates have been installed may be exploited by adversaries. Some information technology products... |
| V-98551 | Medium | CA-TSS AUTH Control Option values specified must be set to (OVERRIDE,ALLOVER) or (MERGE,ALLOVER). | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98781 | Medium | IBM z/OS system administrator must develop a procedure to notify System Administrators and ISSOs of account enabling actions. | Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to enable an... |
| V-98659 | Medium | IBM z/OS data sets for the FTP server must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98705 | Medium | IBM z/OS Session manager must properly configure wait time limits. | A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the... |
| V-98707 | Medium | The IBM z/OS BPX.SMF resource must be properly configured. | Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access... |
| V-98701 | Medium | Duplicated IBM z/OS sensitive utilities and/or programs must not exist in APF libraries. | Removal of unneeded or non-secure functions, ports, protocols, and services mitigate the risk of unauthorized connection of devices, unauthorized transfer of information, or other exploitation of... |
| V-98703 | Medium | IBM z/OS required SMF data record types must be collected. | Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to create an... |
| V-98903 | Medium | IBM z/OS attributes of UNIX user accounts used for account modeling must be defined in accordance with security requirements. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98901 | Medium | IBM z/OS UNIX user accounts must be properly defined. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98709 | Medium | IBM z/OS must specify SMF data options to ensure appropriate activation. | Without establishing when events occurred, it is impossible to establish, correlate, and investigate the events leading up to an outage or attack.
In order to compile an accurate risk assessment... |
| V-98789 | Medium | IBM z/OS system administrator must develop a procedure to shut down the information system, restart the information system, and/or notify the system administrator when anomalies in the operation of any security functions are discovered. | If anomalies are not acted upon, security functions may fail to secure the system.
Security function is defined as the hardware, software, and/or firmware of the information system responsible... |
| V-98869 | Medium | IBM z/OS UNIX MVS data sets used as step libraries in /etc/steplib must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98491 | Medium | The IBM z/OS operating system must enforce a minimum eight-character password length. | The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised.
Password complexity, or strength, is a measure of the... |
| V-98493 | Medium | CA-TSS access to SYS1.LINKLIB must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98861 | Medium | IBM z/OS UNIX resources must be protected in accordance with security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-100515 | Medium | IBM z/OS must not allow nonexistent or inaccessible LINKLIST libraries. | Control of program execution is a mechanism used to prevent execution of unauthorized programs. Some operating systems may provide a capability that runs counter to the mission or provides users... |
| V-98865 | Medium | IBM z/OS UNIX MVS data sets or HFS objects must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98867 | Medium | IBM z/OS UNIX MVS data sets with z/OS UNIX components must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98623 | Medium | CA-TSS ACID creation must use the EXP option. | Without providing this capability, an account may be created without a password. Non-repudiation cannot be guaranteed once an account is created if a user is not forced to change the temporary... |
| V-98693 | Medium | IBM z/OS JESTRACE and/or SYSLOG resources must be protected in accordance with security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98549 | Medium | IBM z/OS Operating system commands (MVS.) of the OPERCMDS resource class must be properly owned. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98627 | Medium | CA-TSS must use propagation control to eliminate ACID inheritance. | In certain situations, software applications/programs need to execute with elevated privileges to perform required functions. However, if the privileges required for execution are at a higher... |
| V-98625 | Medium | The CA-TSS SUBACID Control Option must not be set to U,8. | In certain situations, software applications/programs need to execute with elevated privileges to perform required functions. However, if the privileges required for execution are at a higher... |
| V-98543 | Medium | IBM z/OS system commands must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98629 | Medium | IBM z/OS scheduled production batch ACIDs must specify the CA-TSS BATCH Facility, and the Batch Job Scheduler must be authorized to the Scheduled production CA-TSS batch ACID. | In certain situations, software applications/programs need to execute with elevated privileges to perform required functions. However, if the privileges required for execution are at a higher... |
| V-98547 | Medium | CA-TSS must properly define users that have access to the CONSOLE resource in the TSOAUTH resource class. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98545 | Medium | IBM z/OS MCS consoles access authorization(s) for CONSOLE resource(s) must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98731 | Medium | The IBM z/OS Policy Agent must contain a policy that manages excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of denial-of-service (DoS) attacks. | DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. |
| V-98733 | Medium | The IBM z/OS systems requiring data at rest protection must properly employ IBM DS8880 for full disk encryption. | Information at rest refers to the state of information when it is located on a secondary storage device (e.g., disk drive and tape drive, when used for backups) within an operating system. |
| V-98875 | Medium | IBM z/OS UNIX MVS HFS directory(s) with OTHER write permission bit set must be properly defined. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98735 | Medium | The IBM z/OS System Administrator must develop a process to notify appropriate personnel when accounts are created. | Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to create a new... |
| V-98873 | Medium | IBM z/OS UNIX system file security settings must be properly protected or specified. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98737 | Medium | The IBM z/OS System Administrator must develop a process to notify appropriate personnel when accounts are modified. | Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to create a new... |
| V-98871 | Medium | IBM z/OS UNIX HFS permission bits and audit bits for each directory must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98739 | Medium | The IBM z/OS System Administrator must develop a process to notify appropriate personnel when accounts are deleted. | When operating system accounts are disabled, user accessibility is affected. Accounts are utilized for identifying individual operating system users or for identifying the operating system... |
| V-98783 | Medium | IBM z/OS system administrator must develop a procedure to notify designated personnel if baseline configurations are changed in an unauthorized manner. | Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized access to the operating system. Changes to operating system... |
| V-98879 | Medium | IBM z/OS UNIX OMVS parameters in PARMLIB must be properly specified. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98643 | Medium | CA-TSS MSCA ACID must perform security administration only. | Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or... |
| V-102937 | Medium | IBM z/OS system administrator must develop a procedure to remove or disable emergency accounts after the crisis is resolved or 72 hours. | Emergency accounts are privileged accounts that are established in response to crisis situations where the need for rapid account activation is required. Therefore, emergency account activation... |
| V-98909 | Medium | IBM z/OS HFS objects for the z/OS UNIX Telnet server must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98631 | Medium | CA-TSS ADMINBY Control Option must be set to ADMINBY. | Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious... |
| V-98633 | Medium | CA-TSS LOG Control Option must be set to (SMF,INIT, SEC9, MSG). | Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious... |
| V-98635 | Medium | CA-TSS MSCA ACID password changes must be documented in the change log. | Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious... |
| V-98637 | Medium | The IBM z/OS IEASYMUP resource must be protected in accordance with proper security requirements. | Privileged functions include, for example, establishing accounts, performing system integrity checks, or administering cryptographic key management activities. Non-privileged users are individuals... |
| V-98639 | Medium | CA-TSS Default ACID must be properly defined. | Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. |
| V-98695 | Medium | IBM z/OS JES2 spool resources must be controlled in accordance with security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98803 | Medium | The IBM z/OS Syslog daemon must be properly defined and secured. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98511 | Medium | CA-TSS must limit WRITE or greater access to LINKLIST libraries to system programmers only. | Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or... |
| V-98801 | Medium | The IBM z/OS Syslog daemon must not be started at z/OS initialization. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98807 | Medium | IBM z/OS DFSMS Program Resources must be properly defined and protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98805 | Medium | IBM z/OS DFSMS resources must be protected in accordance with the proper security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98729 | Medium | IBM z/OS sensitive and critical system data sets must not exist on shared DASD. | Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of... |
| V-98727 | Medium | IBM z/OS LNKAUTH=APFTAB must be specified in the IEASYSxx member(s) in the currently active parmlib data set(s). | It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often... |
| V-98725 | Medium | IBM z/OS inapplicable PPT entries must be invalidated. | It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often... |
| V-98533 | Medium | CA-TSS must limit access to System page data sets (i.e., PLPA, COMMON, and LOCALx) to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98723 | Medium | IBM z/OS must not have Inaccessible APF libraries defined. | It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often... |
| V-98531 | Medium | CA-TSS must limit access to SYS(x).TRACE to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98721 | Medium | The IBM z/OS Policy Agent must be configured to deny-all, allow-by-exception firewall policy for allowing connections to other systems. | Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the... |
| V-98699 | Medium | IBM z/OS Surrogate users must be controlled in accordance with proper security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98907 | Medium | The IBM z/OS startup user account for the z/OS UNIX Telnet server must be properly defined. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98889 | Medium | IBM z/OS UNIX security parameters for restricted network service(s) in /etc/inetd.conf must be properly specified. | In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must... |
| V-98517 | Medium | CA-TSS allocate access to system user catalogs must be limited to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98569 | Medium | IBM z/OS Started tasks must be properly defined to CA-TSS. | Failure to restrict system access to authenticated users negatively impacts operating system security. |
| V-98883 | Medium | IBM z/OS UNIX security parameters in etc/profile must be properly specified. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98881 | Medium | IBM z/OS UNIX BPXPRMxx security parameters in PARMLIB must be properly specified. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98905 | Medium | The IBM z/OS UNIX Telnet server etc/banner file must have the Standard Mandatory DoD Notice and Consent Banner. | Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal... |
| V-98887 | Medium | IBM z/OS Default profiles must not be defined in TSS OMVS UNIX security parameters for classified systems. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98449 | Medium | All IBM z/OS digital certificates in use must have a valid path to a trusted Certification Authority (CA). | Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate not already explicitly trusted.
A trust anchor is an authoritative... |
| V-98885 | Medium | IBM z/OS UNIX security parameters in /etc/rc must be properly specified. | Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the... |
| V-98609 | Medium | IBM z/OS DASD management ACIDs must be properly defined to CA-TSS. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98605 | Medium | Started tasks must be properly defined to CA-TSS. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98607 | Medium | CA-TSS Batch ACID(s) submitted through RJE and NJE must be sourced. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98685 | Medium | IBM z/OS JES2 output devices must be controlled in accordance with the proper security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98811 | Medium | IBM z/OS using DFSMS must properly specify SYS(x).PARMLIB(IGDSMSxx), SMS parameter settings. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98687 | Medium | IBM z/OS JES2 output devices must be properly controlled for classified systems. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98813 | Medium | IBM z/OS DFSMS control data sets must be properly protected. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98681 | Medium | IBM z/OS JES2 input sources must be controlled in accordance with the proper security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98529 | Medium | CA-TSS WRITE or Greater access to System backup files must be limited to system programmers and/or batch jobs that perform DASD backups. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98683 | Medium | IBM z/OS JES2 input sources must be properly controlled. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98817 | Medium | The IBM z/OS SSH daemon must be configured with the Standard Mandatory DoD Notice and Consent Banner. | Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal... |
| V-98647 | Medium | CA-TSS ACIDs defined as security administrators must have the NOATS attribute. | Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or... |
| V-98819 | Medium | IBM z/OS PROFILE.TCPIP configuration statements for the TCP/IP stack must be properly coded. | Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access... |
| V-98751 | Medium | IBM z/OS System Administrators must develop an automated process to collect and retain SMF data. | Information stored in one location is vulnerable to accidental or incidental deletion or alteration.
Off-loading is a common process in information systems with limited audit storage capacity. |
| V-98527 | Medium | CA-TSS must limit access to SYSTEM DUMP data sets to system programmers only. | System DUMP data sets are used to record system data areas and virtual storage associated with system task failures. Unauthorized access could result in the compromise of the operating system... |
| V-98689 | Medium | IBM z/OS JESSPOOL resources must be protected in accordance with security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98521 | Medium | CA-TSS must limit WRITE or greater access to the JES2 System data sets (e.g., Spool, Checkpoint, and Initialization parameters) to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98755 | Medium | The IBM z/OS SNTP daemon (SNTPD) must be active. | Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when... |
| V-98649 | Medium | The CA-TSS PTHRESH Control Option must be properly set. | By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced. Limits are imposed by locking the account. |
| V-98759 | Medium | IBM z/OS PARMLIB CLOCKxx must have the Accuracy PARM coded properly. | Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when... |
| V-98891 | Medium | IBM z/OS attributes of z/OS UNIX user accounts must have a unique GID in the range of 1-99. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98893 | Medium | The IBM z/OS user account for the UNIX kernel (OMVS) must be properly defined to the security database. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98895 | Medium | The IBM z/OS user account for the z/OS UNIX SUPERUSER userid must be properly defined. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98815 | Medium | IBM z/OS SMF recording options for the SSH daemon must be configured to write SMF records for all eligible events. | SMF data collection is the basic unit of tracking of all system functions and actions. Included in this tracking data are the audit trails from each of the ACPs. If the control options for the... |
| V-98451 | Medium | Expired IBM z/OS digital certificates must not be used. | Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate not already explicitly trusted.
A trust anchor is an authoritative... |
| V-98619 | Medium | CA-TSS DOWN Control Option values must be properly specified. | Failure to a known safe state helps prevent systems from failing to a state that may cause loss of data or unauthorized access to system resources. Operating systems that fail suddenly and with no... |
| V-98457 | Medium | The number of CA-TSS ACIDs possessing the tape Bypass Label Processing (BLP) privilege must be limited. | The use of security policy filters provides protection for the confidentiality of data by restricting the flow of data. A crucial part of any flow control solution is the ability to configure... |
| V-98613 | Medium | CA-TSS security administrator must develop a process to suspend userids found inactive for more than 35 days. | Inactive identifiers pose a risk to systems and applications because attackers may exploit an inactive identifier and potentially obtain undetected access to the system. Owners of inactive... |
| V-98611 | Medium | CA-TSS user accounts must uniquely identify system users. | To assure individual accountability and prevent unauthorized access, organizational users must be individually identified and authenticated.
A group authenticator is a generic account used by... |
| V-98617 | Medium | The CA-TSS AUTOERASE Control Option must be set to ALL for all systems. | Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of... |
| V-98615 | Medium | The CA-TSS INACTIVE Control Option must be properly set. | Inactive identifiers pose a risk to systems and applications because attackers may exploit an inactive identifier and potentially obtain undetected access to the system. Owners of inactive... |
| V-98519 | Medium | CA-TSS must limit WRITE or greater access to all system-level product installation libraries to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98749 | Medium | IBM z/OS SMF collection files (system MANx data sets or LOGSTREAM DASD) must have storage capacity to store at least one weeks worth of audit data. | In order to ensure operating systems have a sufficient storage capacity in which to write the audit logs, operating systems need to be able to allocate audit record storage capacity.
The task of... |
| V-98691 | Medium | IBM z/OS JESNEWS resources must be protected in accordance with security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98829 | Medium | IBM z/OS started tasks for the Base TCP/IP component must be defined in accordance with security requirements. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98697 | Medium | IBM z/OS JES2 system commands must be protected in accordance with security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98525 | Medium | CA-TSS must limit access to data sets used to back up and/or dump SMF collection files to appropriate users and/or batch jobs that perform SMF dump processing. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98825 | Medium | IBM z/OS data sets for the Base TCP/IP component must be properly protected. | MVS data sets of the Base TCP/IP component provide the configuration, operational, and executable properties of IBMs TCP/IP system product. Failure to properly secure these data sets may lead to... |
| V-98741 | Medium | The IBM z/OS System Administrator must develop a process to notify appropriate personnel when accounts are removed. | When operating system accounts are disabled, user accessibility is affected. Accounts are utilized for identifying individual operating system users or for identifying the operating system... |
| V-98821 | Medium | IBM z/OS permission bits and user audit bits for HFS objects that are part of the Base TCP/IP component must be configured properly. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98745 | Medium | IBM z/OS must not allow nonexistent or inaccessible Link Pack Area (LPA) libraries. | Control of program execution is a mechanism used to prevent execution of unauthorized programs. Some operating systems may provide a capability that runs counter to the mission or provides users... |
| V-98823 | Medium | IBM z/OS TCP/IP resources must be properly protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98591 | Medium | IBM z/OS must properly configure CONSOLxx members. | In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must... |
| V-98593 | Medium | IBM z/OS must properly protect MCS console userid(s). | In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must... |
| V-98595 | Medium | The CA-TSS CPFRCVUND Control Option value specified must be set to NO. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98597 | Medium | The CA-TSS CPFTARGET Control Option value specified must be set to LOCAL. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98757 | Medium | IBM z/OS SNTP daemon (SNTPD) permission bits must be properly configured. | Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when... |
| V-98913 | Medium | The IBM z/OS UNIX Telnet server warning banner must be properly specified. | Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal... |
| V-98775 | Medium | IBM z/OS must employ a session manager to initiate a session lock after a 15-minute period of inactivity for all connection types. | A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the... |
| V-98777 | Medium | IBM z/OS must employ a session manager to manage retaining a users session lock until that user reestablishes access using established identification and authentication procedures. | A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the... |
| V-98771 | Medium | IBM z/OS must configure system wait times to protect resource availability based on site priorities. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98773 | Medium | IBM z/OS must employ a session manager to conceal, via the session lock, information previously visible on the display with a publicly viewable image. | A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the temporary nature... |
| V-98465 | Medium | The CA-TSS PTHRESH Control Option must be set to 2. | By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by... |
| V-98467 | Medium | The CA-TSS NPPTHRESH Control Option must be properly set. | By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by... |
| V-98779 | Medium | IBM z/OS system administrator must develop a procedure to remove or disable temporary user accounts after 72 hours. | If temporary user accounts remain active when no longer needed or for an excessive period, these accounts may be used to gain unauthorized access. To mitigate this risk, automated termination of... |
| V-98463 | Medium | The CA-TSS NPPTHRESH Control Option must be properly set. | By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by... |
| V-98839 | Medium | IBM z/OS SMF recording options for the TN3270 Telnet server must be properly specified. | Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access... |
| V-98669 | Medium | IBM z/OS startup parameters for the FTP server must have the INACTIVE statement properly set. | Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port... |
| V-98667 | Medium | IBM z/OS FTP.DATA configuration for the FTP server must have the INACTIVE statement properly set. | Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port... |
| V-98833 | Medium | The IBM z/OS TCPIP.DATA configuration statement must contain the DOMAINORIGIN or DOMAIN specified for each TCP/IP defined. | If data origin authentication and data integrity verification are not performed, the resultant response could be forged, it may have come from a poisoned cache, the packets could have been... |
| V-98665 | Medium | The IBM z/OS FTP server daemon must be defined with proper security parameters. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98831 | Medium | IBM z//OS must be configured to restrict all TCP/IP ports to ports, protocols, and/or services as defined in the PPSM CAL and vulnerability assessments. | Remote access services, such as those providing remote access to network devices and information systems, which lack automated control capabilities, increase risk and make remote user access... |
| V-98663 | Medium | IBM z/OS user exits for the FTP server must not be used without proper approval and documentation. | In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must... |
| V-98837 | Medium | IBM z/OS TN3270 Telnet server configuration statement MSG10 text must have the Standard Mandatory DoD Notice and Consent Banner. | Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal... |
| V-98661 | Medium | IBM z/OS FTP Control cards must be properly stored in a secure PDS file. | Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the... |
| V-98835 | Medium | The IBM z/OS PROFILE.TCPIP configuration statement must include SMFPARMS and/or SMFCONFIG Statement for each TCP/IP stack. | If events associated with nonlocal administrative access or diagnostic sessions are not logged, a major tool for assessing and investigating attacks would not be available.
This requirement... |
| V-98589 | Medium | CA-TSS RECOVER Control Option must be set to ON. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98587 | Medium | The CA-TSS Automatic Data Set Protection (ADSP) Control Option must be set to NO. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98585 | Medium | The CA-TSS LUUPDONCE Control Option value specified must be set to NO. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98583 | Medium | The number of CA-TSS ACIDs with MISC9 authority must be justified. | Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the... |
| V-98581 | Medium | The number of CA-TSS control ACIDs must be justified and properly assigned. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98573 | Medium | The CA-TSS HPBPW Control Option must be set to three days maximum. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98763 | Medium | The IBM z/OS systems requiring data at rest protection must properly employ IBM DS8880 for full disk encryption for classified systems. | Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The operating system must implement cryptographic modules adhering to the higher... |
| V-98571 | Medium | The CA-TSS CANCEL Control Option must not be specified. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98479 | Medium | The CA-TSS NEWPW control options must be properly set. | If the private key is stolen, this will lead to the compromise of the authentication and non-repudiation gained through PKI because the attacker can use the private key to digitally sign documents... |
| V-98577 | Medium | The CA-TSS OPTIONS Control Option must include option 4 at a minimum. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98539 | Medium | CA-TSS must protect memory and privileged program dumps in accordance with proper security requirements. | Access control policies include: identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include: access control lists, access control matrices,... |
| V-98575 | Medium | The CA-TSS INSTDATA Control Option must be set to 0. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98765 | Medium | The IBM z/OS systems requiring data at rest protection must properly employ IBM DS8880 for full disk encryption. | Operating systems handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest.
Selection... |
| V-98473 | Medium | IBM z/OS for PKI-based authentication must use the ESM to store keys. | If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the network infrastructure.
The cornerstone of the PKI is the private key... |
| V-98579 | Medium | CA-TSS TEMPDS Control Option must be set to YES. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98769 | Medium | The IBM z/OS System Administrator must develop a process to notify Information System Security Officers (ISSOs) of account enabling actions. | Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to enable an... |
| V-98761 | Medium | The IBM z/OS Policy Agent must contain a policy that protects against or limits the effects of denial-of-service (DoS) attacks by ensuring IBM z/OS is implementing rate-limiting measures on impacted network interfaces. | DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity.
This... |
| V-98477 | Medium | The CA-TSS NEWPHRASE and PPSCHAR Control Options must be properly set. | Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in... |
| V-98475 | Medium | IBM z/OS for PKI-based authentication must use the ESM for key management. | Without mapping the certificate used to authenticate to the user account, the ability to determine the identity of the individual user or group will not be available for forensic analysis. |
| V-98679 | Medium | IBM z/OS RJE workstations and NJE nodes must be controlled in accordance with STIG requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98675 | Medium | The IBM z/OS TFTP server program must be properly protected. | Control of program execution is a mechanism used to prevent execution of unauthorized programs. Some operating systems may provide a capability that runs counter to the mission or provides users... |
| V-98469 | Medium | IBM z/OS must limit access for SMF collection files (i.e., SYS1.MANx) to appropriate users and/or batch jobs that perform SMF dump processing. | SMF data collection is the system activity journaling facility of the z/OS system. Unauthorized access could result in the compromise of logging and recording of the operating system environment,... |
| V-98677 | Medium | IBM z/OS JES2.** resource must be properly protected in the CA-TSS database. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98809 | Medium | IBM z/OS DFSMS control data sets must be protected in accordance with security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98673 | Medium | The IBM z/OS warning banner for the FTP server must be properly specified. | Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal... |
| V-98849 | Medium | IBM z/OS TELNETPARMS or TELNETGLOBALS must specify a SECUREPORT statement for systems requiring confidentiality and integrity. | Information can be either unintentionally or maliciously disclosed or modified during preparation for transmission, for example, during aggregation, at protocol transformation points, and during... |
| V-98847 | Medium | The IBM z/OS warning banner for the TN3270 Telnet server must be properly specified. | Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal... |
| V-98845 | Medium | IBM z/OS PROFILE.TCPIP configuration for the TN3270 Telnet server must have the INACTIVE statement properly specified. | Terminating network connections associated with communications sessions includes, for example, de-allocating associated TCP/IP address/port pairs at the operating system level, and de-allocating... |
| V-98843 | Medium | IBM z/OS VTAM session setup controls for the TN3270 Telnet server must be properly specified. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98841 | Medium | IBM z/OS SSL encryption options for the TN3270 Telnet server must be specified properly for each statement that defines a SECUREPORT or within the TELNETGLOBALS. | Without confidentiality protection mechanisms, unauthorized individuals may gain access to sensitive information via a remote access session.
Remote access is access to DoD nonpublic information... |
| V-98671 | Medium | IBM z/OS FTP.DATA configuration statements for the FTP server must specify the Standard Mandatory DoD Notice and Consent Banner statement. | Display of a standardized and approved use notification before granting access to the publicly accessible operating system ensures privacy and security notification verbiage used is consistent... |
| V-98561 | Medium | The CA-TSS ALL record must have appropriate access to Facility Matrix Tables. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98563 | Medium | Data set masking characters allowing access to all data sets must be properly restricted in the CA-TSS security database. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98799 | Medium | IBM z/OS permission bits and user audit bits for HFS objects that are part of the Syslog daemon component must be configured properly. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98567 | Medium | IBM z/OS Sensitive Utility Controls must be properly defined and protected. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98767 | Medium | IBM z/OS must employ a session manager to manage retaining a users session lock until that user reestablishes access using established identification and authentication procedures. | A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the... |
| V-98461 | Medium | The CA-TSS NPWRTHRESH Control Option must be properly set. | By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by... |
| V-98793 | Medium | IBM z/OS must employ a session manager for users to directly initiate a session lock for all connection types. | A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the... |
| V-98791 | Medium | IBM z/OS system administrator must develop a procedure to offload SMF files to a different system or media than the system being audited. | The task of allocating audit record storage capacity is usually performed during initial installation of the operating system. |
| V-98717 | Medium | The CA-TSS database must be backed up on a scheduled basis. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98715 | Medium | The CA-TSS database must be on a separate physical volume from its backup and recovery data sets. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98713 | Medium | IBM z/OS PASSWORD data set and OS passwords must not be used. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98711 | Medium | IBM z/OS BUFUSEWARN in the SMFPRMxx must be properly set. | It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an... |
| V-98915 | Medium | IBM z/OS System data sets used to support the VTAM network must be properly secured. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98917 | Medium | IBM z/OS VTAM USSTAB definitions must not be used for unsecured terminals. | If the operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part... |
| V-98911 | Medium | The IBM z/OS UNIX Telnet server Startup parameters must be properly specified. | Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal... |
| V-98719 | Medium | The IBM z/OS Policy Agent must be configured to deny-all, allow-by-exception firewall policy for allowing connections to other systems. | Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the... |
| V-98487 | Medium | The CA-TSS PWHIST Control Option must be set to 10 or greater. | Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. If the information system or application allows the... |
| V-98485 | Medium | The CA-TSS PPEXP Control Option must be properly set. | Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the operating system does not limit the lifetime of passwords and force... |
| V-98483 | Medium | The CA-TSS PWEXP Control Option must be set to 60. | Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the operating system does not limit the lifetime of passwords and force... |
| V-98859 | Medium | IBM z/OS BPX resource(s) must be protected in accordance with security requirements. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98855 | Medium | IBM z/OS UNIX HFS MapName file security parameters must be properly specified. | Removal of unneeded or non-secure functions, ports, protocols, and services mitigate the risk of unauthorized connection of devices, unauthorized transfer of information, or other exploitation of... |
| V-98857 | Medium | IBM z/OS NOBUFFS in SMFPRMxx must be properly set (default is MSG). | It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an... |
| V-98851 | Medium | IBM Z/OS TSOAUTH resources must be restricted to authorized users. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
| V-98489 | Medium | The CA-TSS PPHIST Control Option must be properly set. | Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. If the information system or application allows the... |
| V-98453 | Medium | IBM z/OS must have Certificate Name Filtering implemented with appropriate authorization and documentation. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98827 | Medium | IBM z/OS Configuration files for the TCP/IP stack must be properly specified. | Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security... |
| V-98897 | Medium | The IBM z/OS user account for the UNIX (RMFGAT) must be properly defined. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98603 | Low | Interactive ACIDs defined to CA-TSS must have the required fields completed. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98599 | Low | CA-TSS User ACIDs and Control ACIDs must have the NAME field completed. | To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
Organizational... |
| V-98509 | Low | CA-TSS must limit Write or greater access to libraries that contain PPT modules to system programmers only. | To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must... |
