National Cyber-Alert System
Vulnerability Summary for CVE-2006-2369
Original release date:05/15/2006
Last revised:09/05/2008
Source:
US-CERT/NIST
Overview
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.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.4
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Provides unauthorized access, Allows partial confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
- Official Statement from Red Hat (08/16/2006)
-
This issue only affected version 4.1.1 and not the versions distributed with Red Hat Enterprise Linux 2.1, 3, or 4.
References to Advisories, Solutions, and Tools
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US-CERT Vulnerability Note: VU#117929
Name: VU#117929
Type: Advisory; Patch Information
External Source: BID
Name: 17978
Type: Patch Information
External Source: BUGTRAQ
Name: 20060515 Re: [Full-disclosure] RealVNC 4.1.1 Remote Compromise
Type: Patch Information
External Source: CONFIRM
Name: http://www.realvnc.com/products/free/4.1/release-notes.html
Type: Patch Information
External Source: MISC
Name: http://www.intelliadmin.com/blog/2006/05/vnc-flaw-proof-of-concept.html
Type: Patch Information
External Source: VUPEN
Name: ADV-2006-1821
Type: Advisory; Patch Information
External Source: VUPEN
Name: ADV-2006-1790
Type: Advisory; Patch Information
External Source: SECTRACK
Name: 1016083
Type: Patch Information
External Source: SECUNIA
Name: 20109
Type: Advisory; Patch Information
External Source: SECUNIA
Name: 20107
Type: Advisory; Patch Information
External Source: XF
Name: realvnc-auth-bypass(26445)
External Source: BUGTRAQ
Name: 20060624 Re: Linux VNC evil client patch - BID 17978
External Source: BUGTRAQ
Name: 20060623 Linux VNC evil client patch - BID 17978
External Source: BUGTRAQ
Name: 20060520 Re: [Full-disclosure] RealVNC 4.1.1 Remote Compromise
External Source: BUGTRAQ
Name: 20060518 RE: [Full-disclosure] RealVNC 4.1.1 Remote Compromise
External Source: BUGTRAQ
Name: 20060516 re: RealVNC 4.1.1 Remote Compromise
External Source: BUGTRAQ
Name: 20060515 RealVNC 4.1.1 Remote Compromise
External Source: OSVDB
Name: 25479
External Source: MISC
Name: http://www.intelliadmin.com/blog/2006/05/security-flaw-in-realvnc-411.html
External Source: VUPEN
Name: ADV-2006-2492
External Source: CISCO
Name: 20060622 RealVNC Remote Authentication Bypass Vulnerability
External Source: SECUNIA
Name: 20789
External Source: MLIST
Name: [vnc-list] 20060513 Version 4.1.2
External Source: FULLDISC
Name: 20060515 RealVNC 4.1.1 Remote Compromise