[Full-disclosure] TPTI-07-09: Macrovision FLEXnet boisweb.dll ActiveX Control Buffer Overflow Vulnerability

TPTI-07-09: Macrovision FLEXnet boisweb.dll ActiveX Control Buffer
Overflow Vulnerability
June 4, 2007

-- CVE ID:

-- Affected Vendor:

-- Affected Products:
Update Service 3.x
Update Service 4.x
Update Service 5.x
FLEXnet Connect 6

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability since November 6, 2006 by Digital Vaccine protection
filter ID 4323, 4327. For further product information on the TippingPoint


-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Business Objects Crystal Reports.
Exploitation requires the target to visit a malicious web site.

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:
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the vulnerability and the correct way to resolve it (patching to a
newer version of the agent resolves the issue).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 partner.

-- 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

-- Credit:
This vulnerability was discovered by Pedram Amini, TippingPoint DVLabs

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