25479 : RealVNC Security Type Enforcement Failure Remote Authentication Bypass
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
25	3689	about 7 years ago	over 1 year ago	7 times	90%

Timeline

Disclosure Date
2006-05-15

Description

RealVNC contains a flaw that may allow a malicious user to bypass authentication and allows access to the remote system without requiring knowledge of the VNC password. The issue is triggered due to an error within the handling of VNC password authentication requests. This flaw may lead to a loss of confidentiality.

Classification

Location: Remote / Network Access
Attack Type: Authentication Management
Impact: Loss of Confidentiality
Exploit: Exploit Public, Exploit Commercial
Disclosure: Vendor Verified
OSVDB: Web Related

Solution

Upgrade to version 4.1.2 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

RealVNC Ltd

RealVNC

4.1.1

References

Security Tracker: 1016083
CERT VU: 117929
Milw0rm: 1791
Exploit Database: 1791
Bugtraq ID: 17978
CVE ID: 2006-2369 (see also: NVD)
Secunia Advisory ID: 20107 20789
ISS X-Force ID: 26445
VUPEN Advisory: ADV-2006-1790 ADV-2006-1821 ADV-2006-2492
Mail List Post: http://archives.neohapsis.com/archives/bugtraq/2006-06/0543.html
http://archives.neohapsis.com/archives/fulldisclosure/2006-05/0356.html
http://archives.neohapsis.com/archives/fulldisclosure/2006-05/0419.html
http://archives.neohapsis.com/archives/fulldisclosure/2006-05/0498.html
Generic Exploit URL: http://immunitysec.com
Vendor Specific News/Changelog Entry: http://sourceforge.net/tracker/?func=detail&aid=1752573&group_id=14067&atid=114067
http://www.realvnc.com/products/free/4.1/release-notes.html
Vendor Specific Advisory URL: http://www.cisco.com/warp/public/707/cisco-sr-20060622-cmm.shtml
Other Advisory URL: http://www.intelliadmin.com/blog/2006/05/security-flaw-in-realvnc-411.html
http://www.intelliadmin.com/blog/2006/05/vnc-flaw-proof-of-concept.html

Tools & Filters

Snort	13611 13612 13880 6471
	21564 21574

Credit

Steve Wiseman - steveintelliadmin.com - IntelliAdmin

CVSSv2 Score

CVSSv2 Base Score = 7.5
Source: nvd.nist.gov | Generated: 2006-05-16 | Disagree?

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