STIGQter: STIG Summary: Oracle Linux 9 Security Technical Implementation Guide Version: 1 Release: 6 Benchmark Date: 01 Jul 2026:

OL 9 must restrict the use of the su command.

DISA Rule

SV-271723r1091881_rule

Vulnerability Number

V-271723

Group Title

SRG-OS-000312-GPOS-00123

Rule Version

OL09-00-002361

Severity

CAT II

CCI(s)

• CCI-002165 - Enforce organization-defined discretionary access control policies over defined subjects and objects.

Weight

10

Fix Recommendation

Configure OL 9 to require users to be in the "wheel" group to run su command.

In file "/etc/pam.d/su", uncomment the following line:

"#auth required pam_wheel.so use_uid"

Or use the following command to update /etc/pam.d/su

$ sed '/^[[:space:]]*#[[:space:]]*auth[[:space:]]\+required[[:space:]]\+pam_wheel\.so[[:space:]]\+use_uid$/s/^[[:space:]]*#//' -i /etc/pam.d/su

If necessary, create a "wheel" group and add administrative users to the group.

$ grep wheel /etc/group

Check Contents

Verify that OL 9 requires uses to be members of the "wheel" group with the following command:

$ grep pam_wheel /etc/pam.d/su
auth required pam_wheel.so use_uid

If a line for "pam_wheel.so" does not exist, or is commented out, this is a finding.

Vulnerability Number

V-271723

Documentable

False

Rule Version

OL09-00-002361

Severity Override Guidance

Verify that OL 9 requires uses to be members of the "wheel" group with the following command:

$ grep pam_wheel /etc/pam.d/su
auth required pam_wheel.so use_uid

If a line for "pam_wheel.so" does not exist, or is commented out, this is a finding.

Check Content Reference

M

Target Key

5680