CVEdetails.com the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
Vulnerability Feeds & WidgetsNew   www.itsecdb.com  

Vulnerability Details : CVE-2006-2369

RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, 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, as originally demonstrated using a long password.
Publish Date : 2006-05-15 Last Update Date : 2016-10-17
Search Twitter   Search YouTube   Search Google

- CVSS Scores & Vulnerability Types

CVSS Score
7.5
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access User
Vulnerability Type(s) Bypass a restriction or similar
CWE ID 287

- Vendor Statements

This issue only affected version 4.1.1 and not the versions distributed with Red Hat Enterprise Linux 2.1, 3, or 4.
Source: Redhat

- Products Affected By CVE-2006-2369

# Product Type Vendor Product Version Update Edition Language
1 Application VNC Realvnc 4.1.1 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
VNC Realvnc 1

- References For CVE-2006-2369

http://xforce.iss.net/xforce/xfdb/26445
XF realvnc-auth-bypass(26445)
http://www.vupen.com/english/advisories/2006/2492
VUPEN ADV-2006-2492
http://www.securityfocus.com/archive/1/archive/1/438368/100/0/threaded
BUGTRAQ 20060624 Re: Linux VNC evil client patch - BID 17978
http://www.securityfocus.com/bid/17978
BID 17978 RealVNC Remote Authentication Bypass Vulnerability Release Date:2007-11-15
http://www.vupen.com/english/advisories/2006/1790
VUPEN ADV-2006-1790
http://www.vupen.com/english/advisories/2006/1821
VUPEN ADV-2006-1821
http://www.securityfocus.com/archive/1/archive/1/434117/100/0/threaded
BUGTRAQ 20060516 re: RealVNC 4.1.1 Remote Compromise
http://www.securityfocus.com/archive/1/archive/1/438175/100/0/threaded
BUGTRAQ 20060623 Linux VNC evil client patch - BID 17978
http://www.cisco.com/warp/public/707/cisco-sr-20060622-cmm.shtml
CISCO 20060622 RealVNC Remote Authentication Bypass Vulnerability
http://www.intelliadmin.com/blog/2006/05/security-flaw-in-realvnc-411.html
http://www.securityfocus.com/archive/1/archive/1/434560/100/0/threaded
BUGTRAQ 20060520 Re: [Full-disclosure] RealVNC 4.1.1 Remote Compromise
http://www.securityfocus.com/archive/1/archive/1/434015/100/0/threaded
BUGTRAQ 20060515 Re: [Full-disclosure] RealVNC 4.1.1 Remote Compromise
http://www.realvnc.com/products/free/4.1/release-notes.html CONFIRM
http://www.securityfocus.com/archive/1/archive/1/434518/100/0/threaded
BUGTRAQ 20060518 RE: [Full-disclosure] RealVNC 4.1.1 Remote Compromise
http://www.securityfocus.com/archive/1/archive/1/433994/100/0/threaded
BUGTRAQ 20060515 RealVNC 4.1.1 Remote Compromise
http://www.kb.cert.org/vuls/id/117929
CERT-VN VU#117929
http://www.intelliadmin.com/blog/2006/05/vnc-flaw-proof-of-concept.html
http://securitytracker.com/id?1016083
SECTRACK 1016083
http://securityreason.com/securityalert/8355
SREASON 8355
http://marc.info/?l=vnc-list&m=114755444130188&w=2
MLIST [vnc-list] 20060513 Version 4.1.2
http://marc.info/?l=full-disclosure&m=114768344111131&w=2
FULLDISC 20060515 RealVNC 4.1.1 Remote Compromise

- Metasploit Modules Related To CVE-2006-2369

RealVNC NULL Authentication Mode Bypass
This module exploits an Authentication bypass Vulnerability in RealVNC Server version 4.1.0 and 4.1.1. It sets up a proxy listener on LPORT and proxies to the target server The AUTOVNC option requires that vncviewer be installed on the attacking machine.
Module type : auxiliary Rank : normal


CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.