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The SSH daemon 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-22460 | GEN005507 | SV-46012r3_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-43292r2_chk ) |
|---|
| Check the SSH daemon configuration for allowed MACs. Procedure: # grep -i macs /etc/ssh/sshd_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-39376r4_fix) |
|---|
| Edit the SSH daemon configuration and remove any MACs less than "hmac-sha1". If necessary, add a "MACs" line. Restart the SSH daemon. # /sbin/service sshd restart |