Details

Audit_user is a sensitive file that, if compromised, would allow a malicious user to select auditing parameters to ignore their sessions. This would allow malicious operations the auditing subsystem would not detect for that user. It could also result in long-term system compromise possibly leading to the compromise of other systems and networks.

Solution

Remove the extended ACL from the file.
# chmod A- /etc/security/audit_user

Supportive Information

The following resource is also helpful.

• https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_SOL_10_x86_V2R2_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Unix.

References

• 800-53|CM-6b.
• CAT|II
• CCI|CCI-000366
• Rule-ID|SV-227537r603266_rule
• STIG-ID|GEN000000-SOL00110
• STIG-Legacy|SV-27004
• STIG-Legacy|V-22599
• Vuln-ID|V-227537

Source

• Tenable.com/audits