All valid SUID/SGID files must be documented.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-48059	SOL-11.1-070190	SV-60931r2_rule		Low

Description
There are valid reasons for SUID/SGID programs, but it is important to identify and review such programs to ensure they are legitimate.

STIG	Date
Solaris 11 SPARC Security Technical Implementation Guide	2017-01-05

Details

Check Text ( C-50493r2_chk )
The root role is required. # find / \( -fstype nfs -o -fstype cachefs -o -fstype autofs \ -o -fstype ctfs -o -fstype mntfs -o -fstype objfs \ -o -fstype proc \) -prune -o -type f -perm -4000 -o \ -perm -2000 -print Output should only be Solaris-provided files and approved customer files. Solaris-provided SUID/SGID files can be listed using the command: # pkg contents -a mode=4??? -a mode=2??? -t file -o pkg.name,path,mode Digital signatures on the Solaris Set-UID binaries can be verified with the elfsign utility, such as this example: # elfsign verify -e /usr/bin/su elfsign: verification of /usr/bin/su passed. This message indicates that the binary is properly signed. If non-vendor provided or non-approved files are included in the list, this is a finding.

Check Text ( C-50493r2_chk )

The root role is required.

# find / \( -fstype nfs -o -fstype cachefs -o -fstype autofs \
-o -fstype ctfs -o -fstype mntfs -o -fstype objfs \
-o -fstype proc \) -prune -o -type f -perm -4000 -o \
-perm -2000 -print

Output should only be Solaris-provided files and approved customer files.

Solaris-provided SUID/SGID files can be listed using the command:

# pkg contents -a mode=4??? -a mode=2??? -t file -o pkg.name,path,mode

Digital signatures on the Solaris Set-UID binaries can be verified with the elfsign utility, such as this example:

# elfsign verify -e /usr/bin/su
elfsign: verification of /usr/bin/su passed.

This message indicates that the binary is properly signed.

If non-vendor provided or non-approved files are included in the list, this is a finding.

Fix Text (F-51669r1_fix)
The root role is required. Determine the existence of any set-UID programs that do not belong on the system, and work with the owners (or system administrator) to determine the best course of action in accordance with site policy.