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All uses of the mount command must be audited.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-72171 | RHEL-07-030740 | SV-86795r5_rule | Medium |
| Description |
|---|
| Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information. At a minimum, the organization must audit the full-text recording of privileged mount commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. Satisfies: SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172 |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 7 Security Technical Implementation Guide | 2017-12-14 |
Details
| Check Text ( C-72405r8_chk ) |
|---|
| Verify the operating system generates audit records when successful/unsuccessful attempts to use the "mount" command occur. Check for the following system calls being audited by performing the following series of commands to check the file system rules in "/etc/audit/audit.rules": # grep -iw "mount" /etc/audit/audit.rules -a always,exit -F arch=b32 -S mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount -a always,exit -F arch=b32 -F path=/bin/mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount -a always,exit -F arch=b32 -F path=/usr/bin/mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount -a always,exit -F arch=b64 -S mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount -a always,exit -F arch=b64 -F path=/bin/mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount -a always,exit -F arch=b64 -F path=/usr/bin/mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount If all uses of the mount command are not being audited, this is a finding. |
| Fix Text (F-78525r6_fix) |
|---|
| Configure the operating system to generate audit records when successful/unsuccessful attempts to use the "mount" command occur. Add or update the following rules in "/etc/audit/rules.d/audit.rules": Note: The rules are duplicated to cover both 32-bit and 64-bit architectures. Only the lines appropriate for the system architecture must be configured. -a always,exit -F arch=b32 -S mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount -a always,exit -F arch=b32 -F path=/bin/mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount -a always,exit -F arch=b32 -F path=/usr/bin/mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount -a always,exit -F arch=b64 -S mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount -a always,exit -F arch=b64 -F path=/bin/mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount -a always,exit -F arch=b64 -F path=/usr/bin/mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount The audit daemon must be restarted for the changes to take effect. |