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 not have the sendmail package installed.

DISA Rule

SV-253079r958478_rule

Vulnerability Number

V-253079

Group Title

SRG-OS-000095-GPOS-00049

Rule Version

TOSS-04-040250

Severity

CAT II

CCI(s)

• CCI-000381 - Configure the system to provide only organization-defined mission essential capabilities.

Weight

10

Fix Recommendation

Configure the operating system to disable non-essential capabilities by removing the sendmail package from the system with the following command:

$ sudo yum remove sendmail

Check Contents

Check to see if the sendmail package is installed with the following command:

$ sudo yum list installed sendmail

If the sendmail package is installed, this is a finding.

Vulnerability Number

V-253079

Documentable

False

Rule Version

TOSS-04-040250

Severity Override Guidance

Check to see if the sendmail package is installed with the following command:

$ sudo yum list installed sendmail

If the sendmail package is installed, this is a finding.

Check Content Reference

M

Target Key

5469