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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 a shell remotely >> OpenSSH 2.5.x -> 2.9.x adv.option

Vulnerability Assessment Details

OpenSSH 2.5.x -> 2.9.x adv.option

Vulnerability Assessment Summary
Checks for the remote SSH version

Detailed Explanation for this Vulnerability Assessment

You are running a version of OpenSSH between 2.5.x and
2.9.x

Depending on the order of the user keys in
~/.ssh/authorized_keys2, sshd might fail to
apply the source IP based access control
restriction to the correct key.

This problem permits users to circumvent
the system policy and login from dispermited
source IP address.

Solution :
Upgrade to OpenSSH 2.9.9

Network Security Threat Level: Medium

Networks Security ID: 3369

Vulnerability Assessment Copyright: This script is Copyright (C) 2001 Renaud Deraison

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