CVE-2006-2450

Gentoo Linux Security Advisory 200703-19

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

auth.c in LibVNCServer 0.7.1 allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as "Type 1 - None", which is accepted even if it is not offered by the server, a different issue than CVE-2006-2369.

auth.c en LibVNCServer 0.7.1 permite a atacantes remotos evitar la validación a través de una respuesta en la cual el cliente especifica un tipo de seguridad insegura como por ejemplo "Tipo 1 - None", el cual es aceptado siempre aunque no es ofrecida por el servidor, un asunto diferente que CVE-2006-2369.

The LTSP server includes vulnerable LibVNCServer code, which fails to properly validate protocol types effectively letting users decide what protocol to use, such as Type 1 - None (GLSA-200608-05). The LTSP VNC server will accept this security type, even if it is not offered by the server. Versions less than 4.2-r1 are affected.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2006-05-18 CVE Reserved
2006-07-14 CVE Published
2024-08-07 CVE Updated
2025-05-14 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (17)

URL	Tag	Source
http://seclists.org/fulldisclosure/2022/May/29	Mailing List
http://secunia.com/advisories/21179	Third Party Advisory
http://secunia.com/advisories/21349	Third Party Advisory
http://secunia.com/advisories/21393	Third Party Advisory
http://secunia.com/advisories/21405	Third Party Advisory
http://secunia.com/advisories/24525	Third Party Advisory
http://www.securityfocus.com/archive/1/442986/100/0/threaded	Mailing List
http://www.securityfocus.com/bid/18977	Vdb Entry
http://www.vupen.com/english/advisories/2006/2797	Vdb Entry

URL	Date	SRC

URL	Date	SRC
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=376824	2022-05-13
http://libvncserver.cvs.sourceforge.net/libvncserver/libvncserver/libvncserver/auth.c?r1=1.11&r2=1.14&diff_format=u	2022-05-13
http://secunia.com/advisories/20940	2022-05-13
http://sourceforge.net/project/shownotes.php?release_id=431724&group_id=32584	2022-05-13

URL	Date	SRC
http://security.gentoo.org/glsa/glsa-200608-05.xml	2022-05-13
http://security.gentoo.org/glsa/glsa-200608-12.xml	2022-05-13
http://security.gentoo.org/glsa/glsa-200703-19.xml	2022-05-13
http://www.novell.com/linux/security/advisories/2006_42_kernel.html	2022-05-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libvncserver Search vendor "Libvncserver"		Libvncserver Search vendor "Libvncserver" for product "Libvncserver"				0.7.1 Search vendor "Libvncserver" for product "Libvncserver" and version "0.7.1"		-		Affected