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CVE-2012-5975

Published: Dec 4, 2012Updated: Apr 29, 2026 Sources: CVE List NVDCWE-287
NVD MITRE
9.3CVSSCRITICAL
EPSS Score
35.9%
Top 1.7%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:MAu:NC:CI:CA:C
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:CConfidentiality
Complete
I:CIntegrity
Complete
A:CAvailability
Complete
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Weaknesses

CWE-287

Affected Products

tectia serverssh
On-prem
Networking Infrastructure / network-management
n/an/a
sshcommercialNetworking Infrastructure

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

2 techniques
Initial Access
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References

http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0013.html
archives.neohapsis.com
http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0065.html
archives.neohapsis.com
http://www.exploit-db.com/exploits/23082/
exploit-db.com
and 1 more references View all →

Timeline

Published
Dec 4, 2012
Last Updated
Apr 29, 2026

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