The /etc/security/passwd file must not have an extended ACL.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Part of GEN001430

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-38729r1_rule The /etc/security/passwd file must not have an extended ACL.

Vulnerability discussion

The /etc/security/passwd file contains the list of local system accounts. It is vital to system security and must be protected from unauthorized modification. The file also contains password hashes which must not be accessible to users other than root.

Check content

Verify the /etc/security/passwd file has no extended ACL and check if extended permissions are disabled. Procedure: #aclget /etc/security/passwd If extended permissions are not disabled, this is a finding.

Fix text

Remove the extended ACL from the /etc/security/passwd file and disable extended permissions. #acledit /etc/security/passwd

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