Title

Duplicate group names must not exist. (Cat II impact)

Discussion

If a group is assigned a duplicate group name, it will create and have access to files with the first GID for that group in group. Effectively, the GID is shared, which is a security risk.

Check Content

The root role is required. Check for duplicate group names. # getent group | cut -f1 -d":" | sort -n | uniq -d If output is produced, this is a finding.

Fix Text

The root role is required. Correct or justify any items discovered in the Check step. Determine if there are any duplicate group names, and work with their respective owners to determine the best course of action in accordance with site policy. Delete or change the group name of duplicate groups.

Additional Identifiers

Rule ID: SV-216194r603881_rule

Vulnerability ID: V-216194

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.