TMA-COS-6.1.5
Ensure permissions on /etc/passwd- are configured
Description
The /etc/passwd- file contains backup user account information. It is critical to ensure that the /etc/passwd- file is protected from unauthorized access. Although it is protected by default, the file permissions could be changed either inadvertently or through malicious actions.
How it is checked
Audit method: Manual review
This recommendation cannot be checked automatically. A scan lists it with these instructions when you pass --include-manual.
Run the following command and verify Uid and Gid are both 0/root and Access is 644 or more restrictive: # stat /etc/passwd- Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
How it is fixed
Fix method: Guidance or infrastructure patch
Run the following command to set permissions on /etc/passwd- : # chown root:root /etc/passwd- # chmod u-x,go-wx /etc/passwd-
Properties
- Operating systems
- Any
- Tags
- access-controlcontainer-optimized-oscos
- Reference
- CIS Google Container-Optimized OS Benchmark v1.2.0 - 6.1.5 Ensure permissions on /etc/passwd- are configured