Ensure no duplicate group names exist

MediumLevel 1Automatedazure-container-linux

Description

Although the groupadd program will not let you create a duplicate group name, it is possible for an administrator to manually edit the /etc/group file and change the group name. Audit: Passes when no value of field 1 in /etc/group appears more than once.

How it is checked

Audit method: Shell command

shell

cut -d: -f1 /etc/group | sort | uniq -d | grep -q . && echo noncompliant || echo compliant

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Based on the results of the audit script, establish unique names for the user groups. File group ownerships will automatically reflect the change as long as the groups have unique GIDs.

Properties

Operating systems: Any
Tags: azure-container-linuxaccounts
Reference: CIS Azure Container Linux Benchmark v1.0.0 - 7.2.7 Ensure no duplicate group names exist

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target azure-container-linux