Changes are coming to https://stigviewer.com.
Take our survey to help us understand your usage and how we can better serve you in the future.
Take Survey
The SSH daemon must be configured to only use FIPS 140-2 approved ciphers.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22458 | GEN005505 | SV-37824r3_rule | DCNR-1 | Medium |
| Description |
|---|
| DoD information systems are required to use FIPS 140-2 approved ciphers. SSHv2 ciphers meeting this requirement are 3DES and AES. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 5 Security Technical Implementation Guide | 2015-12-03 |
Details
| Check Text ( C-37025r1_chk ) |
|---|
| Check the SSH daemon configuration for allowed ciphers. # grep -i ciphers /etc/ssh/sshd_config | grep -v '^#' If no lines are returned, or the returned ciphers list contains any cipher not starting with "3des" or "aes", this is a finding |
| Fix Text (F-32293r4_fix) |
|---|
| Edit the SSH daemon configuration and remove any ciphers not starting with "3des" or "aes" and remove any ciphers ending with "cbc". If necessary, add a "Ciphers" line. Ciphers aes256-ctr,aes192-ctr,aes128-ctr Restart the SSH daemon. # /sbin/service sshd restart |