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

The TOSS operating system must implement DOD-approved encryption in the OpenSSL package.

DISA Rule

SV-252919r1190841_rule

Vulnerability Number

V-252919

Group Title

SRG-OS-000125-GPOS-00065

Rule Version

TOSS-04-010080

Severity

CAT I

CCI(s)

• CCI-000877 - Employ strong authentication in the establishment of nonlocal maintenance and diagnostic sessions.
• CCI-001453 - Implement cryptographic mechanisms to protect the integrity of remote access sessions.

Weight

10

Fix Recommendation

Configure the TOSS OpenSSL library to use only DOD-approved TLS encryption by editing the following lines in the "/etc/crypto-policies/back-ends/opensslcnf.config" file:

MinProtocol = TLSv1.2
DTLS.MinProtocol = DTLSv1.2

A reboot is required for the changes to take effect.

Check Contents

Verify the OpenSSL library is configured to use only DOD-approved TLS encryption:

$ sudo grep -i MinProtocol /etc/crypto-policies/back-ends/opensslcnf.config

TLS.MinProtocol = TLSv1.2
DTLS.MinProtocol = DTLSv1.2

If the "TLS.MinProtocol" is set to anything older than "TLSv1.2" or the "DTLS.MinProtocol" is set to anything older than DTLSv1.2, this is a finding.

Vulnerability Number

V-252919

Documentable

False

Rule Version

TOSS-04-010080

Severity Override Guidance

Verify the OpenSSL library is configured to use only DOD-approved TLS encryption:

$ sudo grep -i MinProtocol /etc/crypto-policies/back-ends/opensslcnf.config

TLS.MinProtocol = TLSv1.2
DTLS.MinProtocol = DTLSv1.2

If the "TLS.MinProtocol" is set to anything older than "TLSv1.2" or the "DTLS.MinProtocol" is set to anything older than DTLSv1.2, this is a finding.

Check Content Reference

M

Target Key

5469