UCF STIG Viewer Logo

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-226991 GEN005512 SV-226991r603265_rule Medium
Description
DoD information systems are required to use FIPS 140-2 approved cryptographic hash functions. Satisfies: SRG-OS-000250, SRG-OS-000495, SRG-OS-000500
STIG Date
Solaris 10 SPARC Security Technical Implementation Guide 2020-12-04

Details

Check Text ( C-29153r485312_chk )
Check the SSH client configuration for allowed MACs.

Procedure:
# grep -i macs /etc/ssh/ssh_config | grep -v '^#'

If no lines are returned, or the returned MACs list contains any MAC that is not hmac-sha1 or a better hmac algorithm that is on the FIPS 140-2 approved list, this is a finding.
Fix Text (F-29141r485313_fix)
Edit the SSH client configuration and remove any MACs that are not hmac-sha1 or a better hmac algorithm that is on the FIPS 140-2 approved list. If necessary, add a MACs line.