System log files must not have extended ACLs, except as needed to support authorized software.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECTP-1, ECLP-1

Associated with: CCI-001314

SV-38687r1_rule System log files must not have extended ACLs, except as needed to support authorized software.

Vulnerability discussion

If the system log files are not protected, unauthorized users could change the logged data, eliminating its forensic value. Authorized software may be given log file access through the use of extended ACLs when needed and configured to provide the least privileges required.

Check content

Determine if any system log file has an extended ACL. If an extended ACL exists, verify with the SA if the ACL is required to support authorized software and provides the minimum necessary permissions. If an extended ACL exists that provides access beyond the needs of authorized software, this is a finding. Check to see if extended permissions are disabled. #aclget /

Fix text

Remove the extended ACL(s) from the system log file(s) and disable extended permissions. # acledit < directory >/< file>

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