National Vulnerability Database (NVD) National Vulnerability Database (CVE-2012-5975)

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Last updated: Mon May 20 02:14:43 EDT 2013

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Vulnerability Summary for CVE-2012-5975

Original release date:12/04/2012

Last revised:12/05/2012

Source: US-CERT/NIST

Overview

The SSH USERAUTH CHANGE REQUEST feature in SSH Tectia Server 6.0.4 through 6.0.20, 6.1.0 through 6.1.12, 6.2.0 through 6.2.5, and 6.3.0 through 6.3.2 on UNIX and Linux, when old-style password authentication is enabled, allows remote attackers to bypass authentication via a crafted session involving entry of blank passwords, as demonstrated by a root login session from a modified OpenSSH client with an added input_userauth_passwd_changereq call in sshconnect2.c.

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

Access Complexity: Medium

Authentication: Not required to exploit

Impact Type:Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

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External Source: MISC

Name: https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/ssh/tectia_passwd_changereq.rb

Hyperlink:https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/ssh/tectia_passwd_changereq.rb

External Source: EXPLOIT-DB

Name: 23082

Hyperlink:http://www.exploit-db.com/exploits/23082/

External Source: FULLDISC

Name: 20121203 Re: SSH.com Communications SSH Tectia Authentication Bypass Remote Zeroday Exploit (king cope)

Hyperlink:http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0065.html

External Source: FULLDISC

Name: 20121201 SSH.com Communications SSH Tectia Authentication Bypass Remote Zeroday Exploit

Hyperlink:http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0013.html