Title

All system audit files must not have extended ACLs. (Cat II impact)

Discussion

If a user can write to the audit logs, then audit trails can be modified or destroyed and system intrusion may not be detected.

Check Content

Check the system audit log files for extended ACLs. Procedure: # grep "^log_file" /etc/audit/auditd.conf|sed s/^[^\/]*//|xargs ls -l If the permissions include a '+', the file has an extended ACL. If the file has an extended ACL and it has not been documented with the IAO, this is a finding.

Fix Text

Remove the extended ACL from the system audit file(s). # setfacl --remove-all [audit file]

Additional Identifiers

Rule ID: SV-45211r1_rule

Vulnerability ID: V-22369

Group Title: GEN002710

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.