The owner, group-owner, mode, ACL, and location of files with the setgid bit set must be documented using site-defined procedures.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-802	GEN002440	SV-802r2_rule	ECPA-1	Medium

Description
All files with the setgid bit set will allow anyone running these files to be temporarily assigned the GID of the file. While many system files depend on these attributes for proper operation, security problems can result if setgid is assigned to programs that allow reading and writing of files, or shell escapes.

STIG	Date
UNIX SRG	2013-03-26

Details

Check Text ( C-8026r2_chk )
Locate all setgid files on the system. Procedure: # find / -perm -2000 If the ownership, permissions, location, and ACLs of all files with the setgid bit set are not documented, this is a finding.

Fix Text (F-956r2_fix)
All files with the setgid bit set will be documented in the system baseline and authorized by the Information Systems Security Officer. Locate all setgid files with the following command. find / -perm -2000 -exec ls -lLd {} \; Ensure setgid files are part of the operating system software, documented application software, documented utility software, or documented locally developed software. Ensure none are text files or shell programs.

Fix Text (F-956r2_fix)

All files with the setgid bit set will be documented in the system baseline and authorized by the Information Systems Security Officer. Locate all setgid files with the following command.

find / -perm -2000 -exec ls -lLd {} \;

Ensure setgid files are part of the operating system software, documented application software, documented utility software, or documented locally developed software. Ensure none are text files or shell programs.