Ensure permissions on /etc/group- are configured

MediumLevel 1Manual reviewcos

Description

The /etc/group- file contains a backup list of all the valid groups defined in the system. It is critical to ensure that the /etc/group- 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/group- Access: (0644/-rw-------) 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/group- : # chown root:root /etc/group- # chmod u-x,go-wx /etc/group-

Properties

Operating systems: Any
Tags: access-controlcontainer-optimized-oscos
Reference: CIS Google Container-Optimized OS Benchmark v1.2.0 - 6.1.7 Ensure permissions on /etc/group- are configured