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-26756r1_rule | DCNR-1 | Medium |
| Description |
|---|
| DoD information systems are required to use FIPS 140-2 approved cryptographic hash functions. |
| STIG | Date |
|---|---|
| UNIX SRG | 2013-03-26 |
Details
| Check Text ( C-27765r1_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 other than hmac-sha1, this is a finding. |
| Fix Text (F-24006r1_fix) |
|---|
| Edit the SSH client configuration and remove any MACs other than hmac-sha1. If necessary, add a MACs line. |