STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 26 Mar 2026:

TOSS 5 must have the s-nail package installed.

DISA Rule

SV-282578r1200714_rule

Vulnerability Number

V-282578

Group Title

SRG-OS-000363-GPOS-00150

Rule Version

TOSS-05-000132

Severity

CAT II

CCI(s)

• CCI-001744 - Implement organization-defined security responses automatically if baseline configurations are changed in an unauthorized manner.

Weight

10

Fix Recommendation

The "s-nail" package can be installed using the following command:

$ sudo dnf install s-nail

Check Contents

Verify TOSS 5 is configured to allow sending email notifications.

Note: The "s-nail" package provides the "mail" command that is used to send email messages.

Verify the "s-nail" package is installed on the system:

$ sudo dnf list --installed s-nail

s-nail.x86_64 14.9.22-6.el9

If "s-nail" package is not installed, this is a finding.

Vulnerability Number

V-282578

Documentable

False

Rule Version

TOSS-05-000132

Severity Override Guidance

Verify TOSS 5 is configured to allow sending email notifications.

Note: The "s-nail" package provides the "mail" command that is used to send email messages.

Verify the "s-nail" package is installed on the system:

$ sudo dnf list --installed s-nail

s-nail.x86_64 14.9.22-6.el9

If "s-nail" package is not installed, this is a finding.

Check Content Reference

M

Target Key

5738