STIGQter: STIG Summary: Red Hat Enterprise Linux 9 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

RHEL 9 must require reauthentication when using the "sudo" command.

DISA Rule

SV-258084r1050789_rule

Vulnerability Number

V-258084

Group Title

SRG-OS-000373-GPOS-00156

Rule Version

RHEL-09-432015

Severity

CAT II

CCI(s)

• CCI-004895 - Permit users to invoke the trusted communications path for communications between the user and the organization-defined security functions, including at a minimum, authentication and re-authentication.

Weight

10

Fix Recommendation

Configure RHEL 9 to reauthenticate "sudo" commands after the specified timeout:

Add the following line to "/etc/sudoers" or a file in "/etc/sudoers.d":

Defaults timestamp_timeout=0

Check Contents

Verify RHEL 9 requires reauthentication when using the "sudo" command to elevate privileges with the following command:

$ sudo grep -ir 'timestamp_timeout' /etc/sudoers /etc/sudoers.d/

/etc/sudoers:Defaults timestamp_timeout=0

If results are returned from more than one file location, this is a finding.

If "timestamp_timeout" is set to a negative number, is commented out, or no results are returned, this is a finding.

Vulnerability Number

V-258084

Documentable

False

Rule Version

RHEL-09-432015

Severity Override Guidance

Verify RHEL 9 requires reauthentication when using the "sudo" command to elevate privileges with the following command:

$ sudo grep -ir 'timestamp_timeout' /etc/sudoers /etc/sudoers.d/

/etc/sudoers:Defaults timestamp_timeout=0

If results are returned from more than one file location, this is a finding.

If "timestamp_timeout" is set to a negative number, is commented out, or no results are returned, this is a finding.

Check Content Reference

M

Target Key

5551