[NT] Macrovision FLEXnet boisweb.dll ActiveX Control Buffer Overflow Vulnerability

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Macrovision FLEXnet boisweb.dll ActiveX Control Buffer Overflow


A vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Macrovision FLEXnet Connect. Exploitation
requires the target to visit a malicious web site.


Vulnerable Systems:
* Update Service 3.x
* Update Service 4.x
* Update Service 5.x
* FLEXnet Connect 6

This specific flaw exists within the ActiveX control with CLSID
85A4A99C-8C3D-499E-A386-E0743DFF8FB7. Specifying large values to two
specific functions available in this control results in an exploitable
stack based buffer overflow.

The vulnerable function / parameters include:
* DownloadAndExecute(), second of five parameters
* AddFileEx(), third of seven parameters

Vendor Response:
Macrovision has issued an update to correct this vulnerability. More
details can be found at:

Macrovision states "Notification was recently (January) sent to
Macrovision customers about the vulnerability and the correct way to
resolve it (patching to a newer version of the agent resolves the issue).
The exact timing of this deployment is left to our customers and

CVE Information:

Disclosure Timeline:
* 2006-06-22 - Vulnerability reported to vendor
* 2006-11-06 - Digital Vaccine released to TippingPoint customers
* 2007-06-04 - Coordinated public release of advisory


The information has been provided by TPTI-07-09: TippingPoint Security
Research Team.
The original article can be found at:


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