System audit logs must be group-owned by root, bin, sys, or system.

From SUSE Linux Enterprise Server v11 for System z

SV-45209r1_rule System audit logs must be group-owned by root, bin, sys, or system.

Vulnerability discussion

Sensitive system and user information could provide a malicious user with enough information to penetrate further into the system.

Check content

Check the group ownership of the audit logs. Procedure: # (audit_log_file=$(grep "^log_file" /etc/audit/auditd.conf|sed s/^[^\/]*//) && if [ -f "${audit_log_file}" ] ; then printf "Log(s) found in "${audit_log_file%/*}":\n"; ls -l ${audit_log_file%/*}; else printf "audit log file(s) not found\n"; fi) If any audit log file is not group-owned by root, bin, sys, or system, this is a finding.

Fix text

Change the group-ownership of the audit log file(s). Procedure: # chgrp root

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