CVE-2012-5975

(SSH.com Communications) SSH Tectia (SSH < 2.0-6.1.9.95 / Tectia 6.1.9.95) - Remote Authentication Bypass

Severity Score

9.3

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

La característica SSH USERAUTH CHANGE REQUEST en SSH Tectia Server v6.0.4 hasta v6.0.20, v6.1.0 hasta v6.1.12, v6.2.0 hasta v6.2.5, y v6.3.0 hasta v6.3.2 en UNIX y Linux, cuando el estilo viejo de autenticación (old-style password authentication is) está activada, permite a atacantes remotos evitar la autenticación a través de una sesión manipulada que implica la entrada de contraseñas en blanco, como se demuestra por una sesión de login de root de un cliente OpenSSH modificados con una llamada adicional input_userauth_passwd_changereq en sshconnect2.c.

*Credits: N/A

CVSS Scores

NISTv2 9.3

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2012-11-21 CVE Reserved
2012-12-01 First Exploit
2012-12-04 CVE Published
2024-09-17 CVE Updated
2024-09-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-287: Improper Authentication

CAPEC

References (8)

URL	Tag	Source
http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0013.html	Mailing List
http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0065.html	Mailing List
https://seclists.org/fulldisclosure/2012/Dec/12

URL	Date	SRC
https://www.exploit-db.com/exploits/23082	2012-12-02
https://www.exploit-db.com/exploits/23156	2012-12-05
http://www.exploit-db.com/exploits/23082	2024-09-17
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/ssh/tectia_passwd_changereq.rb	2024-09-17
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/ssh/tectia_passwd_changereq.rb	2012-12-01

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.4 Search vendor "Ssh" for product "Tectia Server" and version "6.0.4"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.5 Search vendor "Ssh" for product "Tectia Server" and version "6.0.5"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.6 Search vendor "Ssh" for product "Tectia Server" and version "6.0.6"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.7 Search vendor "Ssh" for product "Tectia Server" and version "6.0.7"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.8 Search vendor "Ssh" for product "Tectia Server" and version "6.0.8"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.9 Search vendor "Ssh" for product "Tectia Server" and version "6.0.9"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.10 Search vendor "Ssh" for product "Tectia Server" and version "6.0.10"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.11 Search vendor "Ssh" for product "Tectia Server" and version "6.0.11"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.12 Search vendor "Ssh" for product "Tectia Server" and version "6.0.12"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.13 Search vendor "Ssh" for product "Tectia Server" and version "6.0.13"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.14 Search vendor "Ssh" for product "Tectia Server" and version "6.0.14"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.17 Search vendor "Ssh" for product "Tectia Server" and version "6.0.17"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.18 Search vendor "Ssh" for product "Tectia Server" and version "6.0.18"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.19 Search vendor "Ssh" for product "Tectia Server" and version "6.0.19"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.0.20. Search vendor "Ssh" for product "Tectia Server" and version "6.0.20."	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.1.0 Search vendor "Ssh" for product "Tectia Server" and version "6.1.0"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.1.1 Search vendor "Ssh" for product "Tectia Server" and version "6.1.1"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.1.2 Search vendor "Ssh" for product "Tectia Server" and version "6.1.2"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.1.3 Search vendor "Ssh" for product "Tectia Server" and version "6.1.3"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.1.4 Search vendor "Ssh" for product "Tectia Server" and version "6.1.4"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.1.5 Search vendor "Ssh" for product "Tectia Server" and version "6.1.5"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.1.6 Search vendor "Ssh" for product "Tectia Server" and version "6.1.6"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.1.7 Search vendor "Ssh" for product "Tectia Server" and version "6.1.7"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.1.8 Search vendor "Ssh" for product "Tectia Server" and version "6.1.8"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.1.9 Search vendor "Ssh" for product "Tectia Server" and version "6.1.9"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.1.12 Search vendor "Ssh" for product "Tectia Server" and version "6.1.12"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.2.0 Search vendor "Ssh" for product "Tectia Server" and version "6.2.0"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.2.1 Search vendor "Ssh" for product "Tectia Server" and version "6.2.1"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.2.2 Search vendor "Ssh" for product "Tectia Server" and version "6.2.2"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.2.3 Search vendor "Ssh" for product "Tectia Server" and version "6.2.3"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.2.4 Search vendor "Ssh" for product "Tectia Server" and version "6.2.4"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.2.5 Search vendor "Ssh" for product "Tectia Server" and version "6.2.5"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.3.0 Search vendor "Ssh" for product "Tectia Server" and version "6.3.0"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.3.1 Search vendor "Ssh" for product "Tectia Server" and version "6.3.1"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe
Ssh Search vendor "Ssh"	Tectia Server Search vendor "Ssh" for product "Tectia Server"	6.3.2 Search vendor "Ssh" for product "Tectia Server" and version "6.3.2"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	*	-	Safe