All GIDs referenced in the /etc/passwd file must be defined in the /etc/group file.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-781	GEN000380	SV-38455r1_rule	ECSC-1	Low

Description
If a user is assigned the GID of a group not existing on the system, and a group with that GID is subsequently created, the user may have unintended rights to the group.

STIG	Date
HP-UX 11.31 Security Technical Implementation Guide	2018-03-01

Details

Check Text ( C-36254r1_chk )
Determine if any GIDs referenced in /etc/passwd are not defined in /etc/group. Procedure: # cat /etc/passwd \| cut -f 4,4 -d ":" \| sort \| uniq With the above GIDs, manually execute the following command for every GID from above. Note that this command is expected to return line entry information from /etc/group. # grep -n /etc/group If any GIDs referenced in /etc/passwd and not defined in /etc/group are returned, this is a finding.

Check Text ( C-36254r1_chk )

Determine if any GIDs referenced in /etc/passwd are not defined in /etc/group.

Procedure:
# cat /etc/passwd | cut -f 4,4 -d ":" | sort | uniq

With the above GIDs, manually execute the following command for every GID from above. Note that this command is expected to return line entry information from /etc/group.

# grep -n /etc/group

If any GIDs referenced in /etc/passwd and not defined in /etc/group are returned, this is a finding.

Fix Text (F-31511r2_fix)
Add a group to the system (edit /etc/group) for each GID referenced without a corresponding group.