SSH Server CBC Mode Ciphers Enabled

Low Nessus Plugin ID 70658

Synopsis

The SSH server is configured to use Cipher Block Chaining.

Description

The SSH server is configured to support Cipher Block Chaining (CBC) encryption. This may allow an attacker to recover the plaintext message from the ciphertext.

Note that this plugin only checks for the options of the SSH server and does not check for vulnerable software versions.

Solution

Contact the vendor or consult product documentation to disable CBC mode cipher encryption, and enable CTR or GCM cipher mode encryption.

Plugin Details

Severity: Low

ID: 70658

File Name: ssh_cbc_supported_ciphers.nasl

Version: 1.4

Type: remote

Family: Misc.

Published: 2013/10/28

Modified: 2018/07/30

Dependencies: 70657

Risk Information

Risk Factor: Low

CVSS v2.0

Base Score: 2.6

Temporal Score: 1.9

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

Exploit Available: false

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 2008/11/24

Reference Information

CVE: CVE-2008-5161

BID: 32319

CERT: 958563

CWE: 200