Secunia - Stay Secure
Gartner
Home Corporate Website Jobs Updated Mailing Lists RSS Blog  Online Shop Advertise
Software Inspectors
  Scan Online
  Personal (PSI)
  Network (NSI 2.0)

Solutions For
  Security Professionals
  Security Vendors

Free Solutions For
  Open Communities
  Journalists & Media

Secunia Advisories
  Search
  Historic Advisories
  Listed By Product
  Listed By Vendor
  Statistics / Graphs
  Secunia Research
  Report Vulnerability
  About Advisories

Virus Information
  Chronological List
  Last 10 Virus Alerts
  About Virus Information

Secunia Customers
  Customer Area


RealVNC Password Authentication Bypass Vulnerability Advisory Available in Danish 

Secunia Advisory: SA20107  
Release Date: 2006-05-15
Last Update: 2006-07-20

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

Software:RealVNC 4.x

CVE reference:CVE-2006-2369 (Secunia mirror)

Want to know the next time vulnerabilities are fixed in this product?
- Companies can be alerted via email and SMS!


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.

Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, scan using the Network Software Inspector.

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



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

2 Related Secunia Security Advisories

1. RealVNC Information Disclosure Weakness
2. RealVNC Multiple Connections Denial of Service Vulnerability


Send Feedback to Secunia

If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.

Ideas, suggestions, and other feedback are most welcome.








Secunia PSI
Scan | Patch | Track
Free Download

Secunia Poll

Do you think it's important to read Setup/User Guides for applications for use within your network?


See Results   


Most Popular Advisories

1.
Mozilla Firefox Multiple Vulnerabilities
2.
Opera for Windows Unspecified Code Execution
3.
VLC Media Player WAV Processing Integer Overflow
4.
PCRE pcre_compile.c Buffer Overflow Vulnerability
5.
GNOME Glib PCRE pcre_compile.c Buffer Overflow Vulnerability
6.
Opera Canvas Functions Information Disclosure
7.
Internet Explorer 7 Frame Location Handling Vulnerability
8.
Mozilla Thunderbird Multiple Vulnerabilities
9.
UnixWare ReliantHA Privilege Escalation Vulnerabilities
10.
Fedora update for glib2





Vulnerability Management - Terms & Conditions - Copyright 2002-2008 Secunia - Compliance - Contact Secunia