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

From HP-UX 11.31 Security Technical Implementation Guide

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-38321r1_rule The /etc/passwd file must not have an extended ACL.

Vulnerability discussion

File system ACLs can provide access to files beyond what is allowed by the mode numbers of the files. The /etc/passwd file contains the list of local system accounts. It is vital to system security and must be protected from unauthorized modification.

Check content

Verify /etc/passwd has no extended ACL. # ls -lL /etc/passwd If the permissions include a "+", the file has an extended ACL, this is a finding.

Fix text

Remove the optional ACL from the file. # chacl -z /etc/passwd

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