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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.

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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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