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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

Home >> Browse Vulnerability Assessment Database >> Gain root remotely >> SSH1 CRC-32 compensation attack

SSH1 CRC-32 compensation attack

Vulnerability Assessment Summary Checks for the remote SSH version Detailed Explanation for this Vulnerability Assessment Summary : It is possible to execute arbitrary code on the remote host. Description : The remote host is running a version of SSH which is older than version 1.2.32, or a version of OpenSSH which is older than 2.3.0. The remote version of this software is vulnerable to a flaw known as a 'CRC-32 compensation attack' which may permit a possible hacker to gain a root shell on this host. Solution : Upgrade to version 1.2.32 of SSH which solves this problem, or to version 2.3.0 of OpenSSH Network Security Threat Level: Critical / CVSS Base Score : 10 (AV:R/AC:L/Au:NR/C:C/A:C/I:C/B:N) Networks Security ID: 2347 Vulnerability Assessment Copyright: This script is Copyright (C) 2001-2006 Tenable Network Security

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