OpenSSH < 5.2 CBC Plaintext Disclosure

medium Nessus Plugin ID 44065

Synopsis

The SSH service running on the remote host has an information disclosure vulnerability.

Description

The version of OpenSSH running on the remote host has an information disclosure vulnerability. A design flaw in the SSH specification could allow a man-in-the-middle attacker to recover up to 32 bits of plaintext from an SSH-protected connection in the standard configuration. An attacker could exploit this to gain access to sensitive information.

Solution

Upgrade to OpenSSH 5.2 or later.

See Also

http://www.nessus.org/u?4984aeb9

http://www.openssh.com/txt/cbc.adv

http://www.openssh.com/txt/release-5.2

Plugin Details

Severity: Medium

ID: 44065

File Name: openssh_plaintext_recovery.nasl

Version: 1.5

Type: remote

Family: Misc.

Published: 9/27/2011

Updated: 3/27/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

Vulnerability Information

CPE: cpe:/a:openbsd:openssh

Required KB Items: installed_sw/OpenSSH

Exploit Ease: No known exploits are available

Patch Publication Date: 2/22/2009

Vulnerability Publication Date: 11/14/2008

Reference Information

CVE: CVE-2008-5161

BID: 32319

CWE: 200

CERT: 958563