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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-64559r1_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 |
|---|---|
| Oracle Linux 5 Security Technical Implementation Guide | 2018-10-03 |
Details
| Check Text ( C-52973r1_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-55155r1_fix) |
|---|
| Remove the extended ACL from the file. # setfacl --remove-all /etc/passwd |