STIGQter: STIG Summary: SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 01 Apr 2026:

SLEM 5 SSH daemon must be configured to only use Message Authentication Codes (MACs) employing FIPS 140-2/140-3 approved cryptographic hash algorithms.

DISA Rule

SV-261335r996469_rule

Vulnerability Number

V-261335

Group Title

SRG-OS-000125-GPOS-00065

Rule Version

SLEM-05-255050

Severity

CAT I

CCI(s)

• CCI-000877 - Employ strong authentication in the establishment of nonlocal maintenance and diagnostic sessions.
• CCI-003123 - Implement organization-defined cryptographic mechanisms to protect the confidentiality of nonlocal maintenance and diagnostic communications.

Weight

10

Fix Recommendation

Configure SLEM 5 SSH daemon to only use MACs that employ FIPS 140-2/140-3 approved hashes.

Add or modify the following line in the "/etc/ssh/sshd_config" file:

MACs hmac-sha2-512,hmac-sha2-256

Check Contents

Verify SLEM 5 SSH daemon is configured to only use MACs that employ FIPS 140-2/140-3 approved hashes with the following command:

> sudo /usr/sbin/sshd -dd 2>&1 | awk '/filename/ {print $4}' | tr -d '\r' | tr '\n' ' ' | xargs sudo grep -iH '^\s*macs'
/etc/ssh/sshd_config:MACs hmac-sha2-512,hmac-sha2-256

If any ciphers other than "hmac-sha2-512" or "hmac-sha2-256" are listed, the order differs from the example above, is commented out, missing, or conflicting results are returned, this is a finding.

Vulnerability Number

V-261335

Documentable

False

Rule Version

SLEM-05-255050

Severity Override Guidance

Verify SLEM 5 SSH daemon is configured to only use MACs that employ FIPS 140-2/140-3 approved hashes with the following command:

> sudo /usr/sbin/sshd -dd 2>&1 | awk '/filename/ {print $4}' | tr -d '\r' | tr '\n' ' ' | xargs sudo grep -iH '^\s*macs'
/etc/ssh/sshd_config:MACs hmac-sha2-512,hmac-sha2-256

If any ciphers other than "hmac-sha2-512" or "hmac-sha2-256" are listed, the order differs from the example above, is commented out, missing, or conflicting results are returned, this is a finding.

Check Content Reference

M

Target Key

5596