STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide Version: 2 Release: 6 Benchmark Date: 01 Jul 2026:

TOSS must require reauthentication when using the "sudo" command.

DISA Rule

SV-252931r1050791_rule

Vulnerability Number

V-252931

Group Title

SRG-OS-000373-GPOS-00158

Rule Version

TOSS-04-010230

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 the "sudo" command to require reauthentication.

Edit the /etc/sudoers file:
$ sudo visudo

Add or modify the following line:
Defaults timestamp_timeout=0

Check Contents

Verify the operating system requires reauthentication when using the "sudo" command to elevate privileges.

$ sudo egrep -ir 'timestamp_timeout' /etc/sudoers /etc/sudoers.d
/etc/sudoers:Defaults timestamp_timeout=0

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

Vulnerability Number

V-252931

Documentable

False

Rule Version

TOSS-04-010230

Severity Override Guidance

Verify the operating system requires reauthentication when using the "sudo" command to elevate privileges.

$ sudo egrep -ir 'timestamp_timeout' /etc/sudoers /etc/sudoers.d
/etc/sudoers:Defaults timestamp_timeout=0

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

5469