Finding ID | Version | Rule ID | IA Controls | Severity |
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V-215294 | AIX7-00-002111 | SV-215294r508663_rule | Medium |
Description |
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DoD information systems are required to use FIPS 140-2 approved cryptographic hash functions. |
STIG | Date |
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IBM AIX 7.x Security Technical Implementation Guide | 2021-03-10 |
Check Text ( C-16492r294333_chk ) |
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Check the SSH daemon configuration for allowed MACs by running the following command: # grep -i macs /etc/ssh/sshd_config | grep -v '^#' MACs hmac-sha1,hmac-sha1-96,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96 If no lines are returned, or the returned MAC list contains any MAC that is not FIPS 140-2 approved, this is a finding. |
Fix Text (F-16490r294334_fix) |
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Edit the "/etc/ssh/sshd_config" file and add/edit the following line to contain FIPS 140-2 approved ciphers: MACs hmac-sha1,hmac-sha1-96,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96 Restart SSH daemon: # stopsrc -s sshd # startsrc -s sshd Note: If the "MACs" configuration contains any ciphers that are not FIPS 140-2 approved, they should be removed from the configuration file. |