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The SSH client must be configured to not use Cipher-Block Chaining (CBC)-based ciphers.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22462 | GEN005511 | SV-37830r1_rule | ECSC-1 | Medium |
| Description |
|---|
| The (CBC) mode of encryption as implemented in the SSHv2 protocol is vulnerable to chosen-plaintext attacks and must not be used. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 5 Security Technical Implementation Guide | 2015-09-03 |
Details
| Check Text ( None ) |
|---|
| None |
| Fix Text (F-32298r2_fix) |
|---|
| Edit the SSH client configuration and remove any ciphers not starting with "3des" or "aes" and remove any ciphers ending with "cbc". If necessary, add a "Ciphers" line. |