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

From Red Hat Enterprise Linux 5 Security Technical Implementation Guide

Part of GEN005507

Associated with IA controls: DCNR-1

Associated with: CCI-001453

SV-37826r2_rule The SSH daemon must be configured to only use Message Authentication Codes (MACs) employing FIPS 140-2 approved cryptographic hash algorithms.

Vulnerability discussion

DoD information systems are required to use FIPS 140-2 approved cryptographic hash functions.

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Fix text

Edit the SSH daemon configuration and remove any MACs other than "hmac-sha1". If necessary, add a "MACs" line. Restart the SSH daemon. # /sbin/service sshd restart

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