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

From HP-UX 11.31 Security Technical Implementation Guide

Associated with IA controls: ECSC-1

Associated with: CCI-000366

SV-38455r1_rule All GIDs referenced in the /etc/passwd file must be defined in the /etc/group file.

Vulnerability discussion

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.

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Fix text

Add a group to the system (edit /etc/group) for each GID referenced without a corresponding group.

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