GEN001391 - The /etc/group file must be owned by root.

Information

The /etc/group file is critical to system security and must be owned by a privileged user. The group file contains a list of system groups and associated information.

Solution

Change the owner of the /etc/group file to root.
# chown root /etc/group

See Also

http://iasecontent.disa.mil/stigs/zip/U_STIG_Library_2015_07.zip