[NT] Blue Coat Systems WinProxy CONNECT Method Heap Overflow Vulnerability

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Blue Coat Systems WinProxy CONNECT Method Heap Overflow Vulnerability


BlueCoat <http://www.winproxy.com/> WinProxy is an Internet sharing proxy
server designed for small to medium businesses. In addition to internet
sharing Winproxy also hosts a series of security, anti-spam and
anti-spyware capabilities.

A vulnerability in BlueCoat allows an attacker to cause a denial of
service condition or potentially execute arbitrary code. This due to an
overly long payloads being sent to the product.


Vulnerable Systems:
* WinProxy versions 6.1a and 6.0 r1c.
* All previous versions are suspected vulnerable.

Remote exploitation of a design error in Blue Coat Systems Inc.'s WinProxy
allows attackers to trigger a heap corruption vulnerability.

The vulnerability can be triggered by sending an overly long HTTP CONNECT
request to WinProxy's HTTP proxy service.

Disabling the WinProxy HTTP protocol will prevent this attack.

Disclosure Timeline:
* 08/16/2006 - Initial vendor notification
* 09/19/2006 - Initial vendor response
* 12/06/2006 - Second vendor notification
* 02/02/2007 - Coordinated public disclosure


The information has been provided by iDefense.
The original article can be found at:


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