RHEL 9 must restrict the use of the "su" command.

An XCCDF Rule

Details
Profiles

Description

The "su" program allows to run commands with a substitute user and group ID. It is commonly used to run commands as the root user. Limiting access to such commands is considered a good security practice. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000312-GPOS-00123

ID: SV-258088r1050789_rule
Version: RHEL-09-432035
Severity: Medium
References: CCI-002038 CCI-002165 CCI-004895
Updated: about 2 months ago

Remediation Templates

Configure RHEL 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"
$ 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.

RHEL 9 must restrict the use of the "su" command.

Description

Remediation Templates

A Manual Procedure