RealVNC Password Authentication Bypass Vulnerability - Secunia Advisories - Vulnerability Intelligence

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RealVNC Password Authentication Bypass Vulnerability
Secunia Advisory:	SA20107	Advisory Toolbox: Issue ticket Save in to-do list Mark as handled Exploit information Download as PDF Review actions Add comment
Release Date:	2006-05-15
Last Update:	2006-07-20
Popularity:	71,486 views

Critical:	Highly critical
Impact:	Security Bypass
Where:	From remote
Solution Status:	Vendor Patch

Software:	RealVNC 4.x

Subscribe:	Instant alerts on relevant vulnerabilities

CVE reference:	CVE-2006-2369

Description: Steve Wiseman has reported a vulnerability in RealVNC, which can be exploited by malicious people to bypass certain security restrictions. The vulnerability is caused due to an error within the handling of VNC password authentication requests. This can be exploited to bypass authentication and allows access to the remote system without requiring knowledge of the VNC password. The vulnerability has been reported in version 4.1.1. Other versions may also be affected. Note: Version 4.0 is reportedly not affected. Solution: Update to Free Edition version 4.1.2 or Personal Edition/Enterprise Edition version 4.2.3. http://www.realvnc.com/download.html Provided and/or discovered by: Steve Wiseman Changelog: 2006-05-17: Added link to US-CERT vulnerability note. 2006-07-20: Added CVE reference. Original Advisory: RealVNC: http://www.realvnc.com/products/free/4.1/release-notes.html http://www.realvnc.com/products/personal/4.2/release-notes.html http://www.realvnc.com/products/enterprise/4.2/release-notes.html IntelliAdmin: 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 Other References: US-CERT VU#117929: http://www.kb.cert.org/vuls/id/117929

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