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CVE-2012-5975

9.3 · HIGH

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 auth…

Published Dec 4, 2012sshCWE-287EPSS 35.87%

Overview

CVE-2012-5975 is a high-severity vulnerability affecting ssh tectia_server. It was published on December 4, 2012 and has a CVSS 2.0 base score of 9.3 (HIGH).

This vulnerability has a CVSS 2.0 base score of 9.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from ssh. Update tectia_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refarchives.neohapsis.com/archives/fulldisclosure/2012-12/0013.htmlRefarchives.neohapsis.com/archives/fulldisclosure/2012-12/0065.htmlRefwww.exploit-db.com/exploits/23082/GitHubgithub.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/ssh/tectia_passwd_changereq.rbRefarchives.neohapsis.com/archives/fulldisclosure/2012-12/0013.htmlRefarchives.neohapsis.com/archives/fulldisclosure/2012-12/0065.htmlRefwww.exploit-db.com/exploits/23082/GitHubgithub.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/ssh/tectia_passwd_changereq.rb

How CyberStrike helps

Frequently asked questions

What is CVE-2012-5975?

CVE-2012-5975 is a high-severity vulnerability affecting ssh tectia_server. It was published on December 4, 2012 and has a CVSS 2.0 base score of 9.3 (HIGH).

How severe is CVE-2012-5975?

This vulnerability has a CVSS 2.0 base score of 9.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2012-5975?

Check the references section for vendor advisories and patches from ssh. Update tectia_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2012-5975?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-5975 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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