| V-223505 | High | ACF2 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-223422 | High | CA-ACF2 OPTS GSO record must be set to ABORT mode. | 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-223589 | High | IBM z/OS SSH daemon must be configured to use a FIPS 140-2 compliant cryptographic algorithm. | 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-223588 | 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-223538 | High | IBM z/OS must implement DoD-approved encryption to protect the confidentiality of remote access sessions. | Without cryptographic integrity protections, information can be altered by unauthorized users without detection. |
| V-223439 | 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-223450 | High | CA-ACF2 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-223493 | 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-223442 | High | CA-ACF2 must limit all system PROCLIB data sets 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-223443 | High | CA-ACF2 access to the System Master Catalog 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-223464 | High | CA-ACF2 must be installed, functional, 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-223463 | High | IBM z/OS SYS1.PARMLIB 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-223448 | High | CA-ACF2 must limit Write or greater access to Libraries containing EXIT modules to system programmers only. | 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-223449 | High | CA-ACF2 must limit Update and Allocate 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-223440 | 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-223441 | High | CA-ACF2 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-223446 | High | CA-ACF2 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-223447 | High | CA-ACF2 must limit Write or greater access to SYS1.IMAGELIB to system programmers. | 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-223445 | High | CA-ACF2 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-223561 | 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-223456 | High | CA-ACF2 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-223453 | High | CA-ACF2 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-223514 | High | ACF2 security data sets and/or databases must be properly protected. | An isolation boundary provides access control and protects the integrity of the hardware, software, and firmware that perform security functions.
Security functions are the hardware, software,... |
| V-223616 | High | IBM z/OS UNIX SUPERUSER resource 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-223485 | Medium | ACF2 LOGONIDs assigned for started tasks must have the STC attribute specified in the associated LOGONID record. | Activity under unusual conditions can indicate hostile activity. For example, what is normal activity during business hours can indicate hostile activity if it occurs during off hours.
Depending... |
| V-223509 | Medium | ACF2 TSOTWX GSO record values must be set to obliterate the logon password on TWX devices. | To prevent the compromise of authentication information, such as passwords during the authentication process, the feedback from the operating system must not provide any information allowing an... |
| V-223508 | Medium | ACF2 PSWD GSO record value must be set to prohibit password reuse for a minimum of five generations or more. | 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-223507 | Medium | ACF2 PSWD GSO record value must be set to require 24 hours/1 day as the minimum password lifetime. | Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and... |
| V-223506 | Medium | ACF2 PSWD GSO record value must be set to require a 60-day maximum password lifetime restriction. | 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-223504 | Medium | ACF2 PSWD GSO record value must be set to require the change of at least 50% of the total number of characters when passwords are changed. | If the operating system allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increasing the window of opportunity for... |
| V-223503 | Medium | ACF2 PSWD GSO record value must be set to require at least one lower-case character be used. | 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-223502 | Medium | ACF2 PSWD GSO record value must be set to require at least one numeric character be used. | 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-223501 | Medium | ACF2 PSWD GSO record value must be set to require at least one upper-case character be used. | 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-223500 | Medium | CA-ACF2 must enforce password complexity by requiring that at least one special character be used. | 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 resisting... |
| V-223420 | Medium | IBM z/OS must not use Expired Digital Certificates. | 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-223421 | Medium | All IBM z/OS digital certificates in use must have a valid path to a trusted Certification authority. | 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-223423 | Medium | The number of ACF2 users granted the special privilege PPGM must be justified. | 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-223424 | Medium | The number of ACF2 users granted the special privilege OPERATOR must be kept to a strictly controlled minimum. | 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-223425 | Medium | The number of ACF2 users granted the special privilege CONSOLE must be justified. | 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-223426 | Medium | The number of ACF2 users granted the special privilege ALLCMDS must be justified. | 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-223427 | 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-223428 | 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-223429 | Medium | CA-ACF2 NJE GSO record value must indicate validation options that apply to jobs submitted through a network job entry subsystem (JES2, JES3, RSCS). | 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-223620 | Medium | IBM z/OS UNIX MVS HFS directory(s) with other write permission bit set must be properly defined. | 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-223621 | 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-223626 | 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-223627 | Medium | IBM z/OS UNIX SYSTEM FILE SECURITY SETTINGS must be properly protected or specified. | 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-223624 | Medium | IBM z/OS UNIX MVS data sets or HFS objects must be properly protected. | 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-223625 | 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-223587 | Medium | IBM z/OS SSH daemon must be configured with the Department of Defense (DoD) logon banner. | 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-223586 | Medium | IBM z/OS SMF recording options for the SSH daemon 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-223585 | 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. | 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-223584 | Medium | ACF2 system administrator must develop a procedure to disable account identifiers (individuals, groups, roles, and devices) after 35 days of inactivity. | 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-223583 | Medium | IBM z/OS must employ a session manager configured 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-223582 | 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-223581 | 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-223580 | 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-223438 | Medium | CA-ACF2 must limit access to System page data sets (i.e., PLPA, COMMON, and LOCALx) to system programmers. | 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-223532 | 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-223533 | 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-223530 | 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-223531 | 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-223536 | 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-223537 | 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-223534 | 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-223535 | 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-223539 | 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-223433 | Medium | CA-ACF2 must limit access to SYSTEM DUMP data sets to appropriate authorized users. | 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-223432 | Medium | CA-ACF2 must limit update and allocate access to system backup files 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-223431 | Medium | CA-ACF2 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-223430 | Medium | CA-ACF2 must protect Memory and privileged program dumps 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-223437 | Medium | Access to IBM z/OS special privilege TAPE-LBL or TAPE-BLP must be limited and/or justified. | 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-223436 | Medium | ACF2 Classes required to properly security the z/OS UNIX environment must be ACTIVE. | 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-223435 | Medium | CA-ACF2 allocate access to system user catalogs must be properly protected. | 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-223434 | Medium | CA-ACF2 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-223635 | 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-223634 | Medium | IBM z/OS user account for the z/OS UNIX SUPERSUSER 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-223636 | Medium | IBM z/OS UNIX groups must be defined with a unique GID. | 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-223631 | Medium | IBM z/OS UNIX BPXPRMxx security parameters in PARMLIB 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-223630 | Medium | IBM z/OS UNIX HFS MapName files 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-223633 | 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-223632 | 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-223596 | Medium | IBM z/OS DFMSM resource class(es)must be defined to the GSO SAFDEF record 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-223628 | Medium | IBM z/OS UNIX HFS permission bits and audit bits for each directory must be properly protected or specified. | 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-223629 | 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-223597 | 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-223525 | Medium | 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-223524 | 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-223527 | Medium | IBM z/OS FTP.DATA configuration for the FTP Server must have 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-223526 | Medium | IBM z/OS startup parameters for the FTP Server must be defined in the SYSTCPD and SYSFTPD DD statements for configuration files. | 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-223521 | Medium | 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 publicly accessible operating system ensures privacy and security notification verbiage used is consistent... |
| V-223520 | 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-223523 | Medium | IBM z/OS FTP Control cards must be properly stored in a secure PDS file. | 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-223522 | Medium | IBM z/OS FTP.DATA configuration statements for the FTP Server must specify the BANNER statement. | The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error... |
| V-223529 | 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-223528 | 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-223622 | 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-223623 | Medium | IBM z/OS UNIX MVS data sets with z/OS UNIX components must be properly protected. | 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-223451 | Medium | CA-ACF2 must limit Update and Allocate access to LINKLIST 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-223489 | Medium | ACF2 MAINT GSO record value if specified must be restricted to production storage management user. | 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-223486 | Medium | ACF2 emergency LOGONIDS with the REFRESH attribute must have the SUSPEND attribute specified. | Activity under unusual conditions can indicate hostile activity. For example, what is normal activity during business hours can indicate hostile activity if it occurs during off hours.
Depending... |
| V-223487 | Medium | ACF2 BACKUP GSO record must be defined with a TIME value specifies greater than 00 unless the database is shared and backed up on another system. | 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-223484 | Medium | ACF2 LOGONIDs associated with started tasks that have the MUSASS attribute and the requirement to submit jobs on behalf of its users must have the JOBFROM attribute as required. | Activity under unusual conditions can indicate hostile activity. For example, what is normal activity during business hours can indicate hostile activity if it occurs during off hours.
Depending... |
| V-223643 | Medium | IBM z/OS UNIX Telnet Server Startup parameters must be properly specified to display the banner. | 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-223482 | Medium | ACF2 LOGONIDs with the NON-CNCL attribute specified in the associated LOGONID record must be listed as trusted and must be specifically approved. | Activity under unusual conditions can indicate hostile activity. For example, what is normal activity during business hours can indicate hostile activity if it occurs during off hours.
Depending... |
| V-223645 | 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-223480 | Medium | ACF2 REFRESH attribute must be restricted to security administrators only. | Activity under unusual conditions can indicate hostile activity. For example, what is normal activity during business hours can indicate hostile activity if it occurs during off hours.
Depending... |
| V-223481 | Medium | ACF2 maintenance LOGONIDs must have corresponding GSO MAINT records. | Activity under unusual conditions can indicate hostile activity. For example, what is normal activity during business hours can indicate hostile activity if it occurs during off hours.
Depending... |
| V-223637 | 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-223591 | Medium | IBM z/OS Syslog daemon must 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-223419 | Medium | IBM z/OS Certificate Name Filtering must be 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-223459 | Medium | ACF2 PPGM GSO record value must specify protected programs that are only executed by privileged users. | Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or... |
| V-223595 | 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-223458 | Medium | CA-ACF2 must limit Update and Allocate access to system backup files to system programmers and/or batch jobs that perform DASD backups. | Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or... |
| V-223550 | Medium | IBM z/OS NOBUFFS in SMFPRMxx must be properly set (Default is MSG). | It is critical that when the operating system is at risk of failing to process audit logs as required, it takes action to mitigate the failure. Audit processing failures include: software/hardware... |
| V-223551 | 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-223552 | Medium | 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-223553 | 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-223554 | Medium | IBM z/OS SMF collection files (i.e., SYS1.MANx) access must be limited 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-223555 | Medium | IBM z/OS system administrator must develop a process to notify 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-223556 | 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-223557 | Medium | IBM z/OS must configure system waittimes to protect resource availability based on site priorities. | 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-223558 | Medium | IBM z/OS Emergency LOGONIDs must be properly defined. | Activity under unusual conditions can indicate hostile activity. For example, what is normal activity during business hours can indicate hostile activity if it occurs during off hours.
Depending... |
| V-223559 | Medium | IBM z/OS DFSMS control data sets must reside on separate storage volumes. | 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-223491 | 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-223490 | Medium | ACF2 LINKLST GSO record if specified must only contains trusted system data sets. | 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-223492 | Medium | ACF2 BLPPGM GSO record must not be defined. | 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-223495 | Medium | 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-223494 | Medium | 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-223497 | Medium | CA-ACF2 defined user accounts must uniquely identify system users. | 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-223496 | Medium | ACF2 LOGONIDs must be defined with 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-223499 | Medium | CA-ACF2 PWPHRASE GSO record must be properly defined. | 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 resisting... |
| V-223498 | Medium | CA-ACF2 userids found inactive for more than 35 days must be suspended. | 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-223593 | Medium | IBM z/OS DFSMS resource class(es) must be defined to the GSO CLASMAP record 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-223468 | Medium | The CA-ACF2 LOGONID with the REFRESH attribute must have procedures for utilization. | 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-223469 | Medium | IBM z/OS TSO GSO record values must be set to the values 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-223465 | Medium | CA-ACF2 must limit update and allocate 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-223467 | Medium | The EXITS GSO record value must specify the module names of site written ACF2 exit routines. | 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-223462 | Medium | The CA-ACF2 PSWD GSO record values for MAXTRY and PASSLMT 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-223543 | Medium | IBM z/OS system administrator must develop a process 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-223542 | Medium | IBM z/OS system administrator must develop a process 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-223541 | Medium | IBM z/OS system administrator must develop a process 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 modify an... |
| V-223540 | Medium | IBM z/OS system administrator must develop a process 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-223547 | 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-223546 | Medium | IBM z/OS must specify SMF data options to assure 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-223545 | Medium | IBM z/OS special privileges must be assigned on an as-needed basis to LOGONIDs associated with STCs and LOGONIDs that need to execute TSO in batch. | 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-223544 | Medium | IBM z/OS Required SMF data record types must be collected. | 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-223549 | 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-223548 | 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-223594 | 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-223479 | Medium | CA-ACF2 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-223478 | Medium | CA-ACF2 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-223477 | Medium | CA-ACF2 must prevent the use of dictionary words for passwords. | If the operating system allows the user to select passwords based on dictionary words, then this increases the chances of password compromise by increasing the opportunity for successful guesses... |
| V-223476 | Medium | The CA-ACF2 GSO OPTS record value 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-223475 | Medium | CA-ACF2 RULEOPTS GSO record values must be set to the values 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-223474 | Medium | IBM z/OS batch jobs with restricted ACF2 LOGONIDs must have the PGM(xxxxxxxx) and SUBAUTH attributes or the SOURCE(xxxxxxxx) attribute assigned to the corresponding LOGONIDs. | Activity under unusual conditions can indicate hostile activity. For example, what is normal activity during business hours can indicate hostile activity if it occurs during off hours.
Depending... |
| V-223473 | Medium | IBM z/OS LOGONID with the ACCTPRIV attribute must be restricted to the ISSO. | 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-223472 | Medium | IBM z/OS LOGONIDs with the AUDIT or CONSULT attribute must be properly scoped. | 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-223471 | Medium | IBM z/OS must have the RULEVLD and RSRCVLD attributes specified for LOGONIDs with the SECURITY attribute. | 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-223470 | Medium | IBM z/OS procedures must restrict ACF2 LOGONIDs with the READALL attribute to auditors and/or authorized users. | 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-223576 | Medium | IBM z/OS must employ a session manager to manage session lock after a 15-minute period of inactivity. | 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-223483 | Medium | ACF2 LOGONIDs with the ACCOUNT, LEADER, or SECURITY attribute must be properly scoped. | Activity under unusual conditions can indicate hostile activity. For example, what is normal activity during business hours can indicate hostile activity if it occurs during off hours.
Depending... |
| V-223574 | 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-223575 | Medium | IBM z/OS must employ a session manager that 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-223572 | Medium | 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-223573 | 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-223570 | 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-223571 | Medium | IBM z/OS Policy agent must contain a policy that protects against or limits the effects of Denial of Service (DoS) attacks by ensuring the operating system 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-223590 | 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. | HFS directories and files of the Syslog daemon provide the configuration and executable properties of this product. Failure to properly secure these objects could lead to unauthorized access. This... |
| V-223578 | Medium | IBM z/OS system administrator must develop a procedure to automatically 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-223579 | 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-223592 | Medium | IBM z/OS Syslog daemon must be properly defined and secured. | The Syslog daemon, known as syslogd, is a zOS UNIX daemon that provides a central processing point for log messages issued by other zOS UNIX processes. It is also possible to receive log messages... |
| V-223610 | 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-223569 | 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.
This... |
| V-223568 | Medium | IBM z/OS must use SAF Key Rings for key management. | 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-223444 | 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-223560 | Medium | IBM z/OS Policy Agent must employ a deny-all, allow-by-exception firewall policy for allowing connections to other systems. | Failure to restrict network connectivity only to authorized systems permits inbound connections from malicious systems. It also permits outbound connections that may facilitate exfiltration of DoD data. |
| V-223563 | Medium | IBM z/OS must not allow non-existent 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-223562 | Medium | IBM z/OS must not allow non-existent 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-223565 | Medium | IBM z/OS LNKAUTH=APFTAB must be specified in the IEASYSxx member(s) in the currently active parmlib data set(s). | Failure to specify LINKAUTH=APFTAB allows libraries other than those designated as APF to contain authorized modules which could bypass security and violate the integrity of the operating system... |
| V-223564 | 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-223567 | 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-223566 | 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-223604 | 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-223605 | 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-223606 | Medium | 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-223644 | 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-223600 | 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-223601 | 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-223602 | 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-223603 | 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-223608 | Medium | IBM z/OS PROFILE.TCPIP configuration INACTIVITY statement must be configured to 900 seconds. | 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-223609 | Medium | IBM z/OS SMF recording options for the TN3270 Telnet Server must be properly specified. | 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-223455 | Medium | CA-ACF2 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-223454 | Medium | CA-ACF2 Access to SYS1.LINKLIB must be properly protected. | 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-223457 | Medium | 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-223518 | 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-223519 | Medium | IBM z/OS permission bits and user audit bits for HFS objects that are part of the FTP Server component must be properly configured. | MVS data sets of the FTP Server provide the configuration and operational characteristics of this product. Failure to properly secure these data sets may lead to unauthorized access resulting in... |
| V-223452 | Medium | CA-ACF2 must limit update and allocate 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-223515 | Medium | ACF2 AUTOERAS GSO record value must be set to indicate that ACF2 is controlling the automatic physical erasure of VSAM or non VSAM data sets. | 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-223516 | Medium | The operating system must enforce a minimum 8-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-223517 | Medium | IBM z/OS SMF recording options for the FTP Server must be configured to write SMF records for all eligible events. | 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-223510 | Medium | ACF2 TSOCRT GSO record values must be set to obliterate the logon to ASCII CRT devices. | To prevent the compromise of authentication information, such as passwords during the authentication process, the feedback from the operating system must not provide any information allowing an... |
| V-223511 | Medium | ACF2 TSO2741 GSO record values must be set to obliterate the logon password on 2741 devices. | To prevent the compromise of authentication information, such as passwords during the authentication process, the feedback from the operating system must not provide any information allowing an... |
| V-223512 | Medium | ACF2 SECVOLS GSO record value must be set to VOLMASK(). Any local changes are justified and documented with the ISSO. | The SECVOLS record defines the DASD and tape volumes for which CA-ACF2 provides volume-level protection. Information at rest refers to the state of information when it is located on a secondary... |
| V-223513 | Medium | ACF2 RESVOLS GSO record value must be set to Volmask(-). Any other setting requires documentation justifying the change. | The RESVOLS record defines DASD and mass storage volumes for which CA ACF2 is to provide protection at the data set name level.
Information at rest refers to the state of information when it is... |
| V-223607 | Medium | 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-223617 | Medium | IBM z/OS UNIX security parameters in etc/profile 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-223615 | 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-223614 | Medium | IBM z/OS PROFILE.TCPIP configuration for the TN3270 Telnet Server must have INACTIVE statement properly specified. | 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-223613 | 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-223612 | Medium | 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 publicly accessible operating system ensures privacy and security notification verbiage used is consistent... |
| V-223611 | Medium | IBM z/OS TN3270 Telnet Server configuration statement MSG10 text must have the Standard Mandatory DoD Notice and Consent Banner. | A logon banner can be used to inform users about the environment during the initial logon. In the DISA environment, logon banners are used to warn users against unauthorized entry and the... |
| V-223577 | Medium | IBM z/OS System Administrator must develop a procedure to automatically 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-223598 | 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-223599 | Medium | IBM z/OS PROFILE.TCPIP configuration statements for the TCP/IP stack must be coded properly. | 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-223619 | 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-223618 | Medium | IBM z/OS UNIX security parameters in /etc/rc 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-223640 | 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-223641 | Medium | IBM z/OS UNIX Telnet Server etc/banner file must have the Standard Mandatory DoD Notice and Consent Banner. | A logon banner can be used to inform users about the environment during the initial logon. In the DISA environment, logon banners are used to warn users against unauthorized entry and the... |
| V-223639 | Medium | IBM z/OS startup user account for the z/OS UNIX Telnet Server must be defined 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-223642 | Medium | 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 publicly accessible operating system ensures privacy and security notification verbiage used is consistent... |
| V-223638 | 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-223488 | Low | ACF2 APPLDEF GSO record if used must have supporting documentation indicating the reason it was used. | Failure to restrict network connectivity only to authorized systems permits inbound connections from malicious systems. It also permits outbound connections that may facilitate exfiltration of DoD data. |
| V-223466 | Low | CA-ACF2 must limit Write or greater access to libraries that contain PPT modules to system programmers only. | 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... |
