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Tool Directory

CVE-2012-5975

HighPublished

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...

Published: Dec 4, 2012
Updated: Sep 17, 2024
Assigning CNA: mitre
Evidence observed: Dec 2, 2012

Primary CVSS

9.3/ 10High

nvd · CVSS 2.0

AV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS probability estimate

35.9%

Moderate · next 30 days

Percentile: 98.4%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

(SSH.com Communications) SSH Tectia (SSH < 2.0-6.1.9.95 / Tectia 6.1.9.95) - Remote Authentication BypassExploit
kingcope · linux · Dec 2, 2012
(SSH.com Communications) SSH Tectia - USERAUTH Change Request Password Reset (Metasploit)Exploit
Metasploit · unix · Dec 5, 2012

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