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← Back to SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

V-22340

CAT II (Medium)

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

Rule ID

SV-45006r1_rule

STIG

SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

Version

V1R12

CCIs

CCI-000225

Discussion

The /etc/shadow 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 /etc/shadow has no extended ACL.
# ls -l /etc/shadow
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 file.
# setfacl --remove-all /etc/shadow