All system audit files must not have extended ACLs.

From Oracle Linux 5 Security Technical Implementation Guide

Part of GEN002710

Associated with: CCI-000163

SV-63885r1_rule All system audit files must not have extended ACLs.

Vulnerability 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).

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