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The SSH client must be configured to only use Message Authentication Codes (MACs) employing FIPS 140-2 approved cryptographic hash algorithms.


Overview

Finding ID Version Rule ID IA Controls Severity
V-22463 GEN005512 SV-46020r2_rule Medium
Description
DoD information systems are required to use FIPS 140-2 approved cryptographic hash functions.
STIG Date
SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide 2018-09-19

Details

Check Text ( C-43296r2_chk )
Check the SSH client configuration for allowed MACs.
# grep -i macs /etc/ssh/ssh_config | grep -v '^#'
If no lines are returned, or the returned MACs list contains any MAC less than "hmac-sha1", this is a finding.
Fix Text (F-39384r3_fix)
Edit the SSH client configuration and remove any MACs less than "hmac-sha1". If necessary, add a "MACs" line.