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


Overview

Finding ID Version Rule ID IA Controls Severity
V-22334 GEN001390 SV-44993r1_rule Medium
Description
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.
STIG Date
SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide 2018-09-19

Details

Check Text ( C-42400r1_chk )
Verify /etc/passwd has no extended ACL.
# ls -l /etc/passwd
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 (F-38410r1_fix)
Remove the extended ACL from the file.
# setfacl --remove-all /etc/passwd