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

From SOLARIS 10 SPARC SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECPA-1

Associated with: CCI-000368

SV-802r2_rule The owner, group-owner, mode, ACL, and location of files with the setgid bit set must be documented using site-defined procedures.

Vulnerability discussion

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.

Check content

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

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.

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