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Last updated: 10/31/2014 1:34:39 AM

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National Cyber Awareness System

Vulnerability Summary for CVE-2008-3844

Original release date: 08/27/2008
Last revised: 03/07/2011
Source: US-CERT/NIST

Overview

Certain Red Hat Enterprise Linux (RHEL) 4 and 5 packages for OpenSSH, as signed in August 2008 using a legitimate Red Hat GPG key, contain an externally introduced modification (Trojan Horse) that allows the package authors to have an unknown impact. NOTE: since the malicious packages were not distributed from any official Red Hat sources, the scope of this issue is restricted to users who may have obtained these packages through unofficial distribution points. As of 20080827, no unofficial distributions of this software are known.

Description

This alert is primarily for those who may obtain Red Hat binary packages via channels other than those of official Red Hat subscribers. Packages obtained by Red Hat Enterprise Linux subscribers via Red Hat Network are not at risk. Redhat has provided a shell script which lists the affected packages and can verify that none of them are installed on a system at the following location: https://www.redhat.com/security/data/openssh-blacklist-1.0.sh

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 9.3 (HIGH) (AV:N/AC:M/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: REDHAT
Name: RHSA-2008:0855
External Source: SECTRACK
Name: 1020730
External Source: CONFIRM
Name: http://www.redhat.com/security/data/openssh-blacklist.html
External Source: VUPEN
Name: ADV-2008-2821
External Source: BID
Name: 30794
External Source: SECUNIA
Name: 32241
External Source: CONFIRM
Name: http://support.avaya.com/elmodocs2/security/ASA-2008-399.htm
External Source: XF
Name: openssh-rhel-backdoor(44747)
External Source: SECUNIA
Name: 31575
Type: Advisory

Technical Details

Vulnerability Type (View All)