TippingPoint Zero Day Initiative

Adobe Flash Player ActionScript Exception Handler Integer Overflow Vulnerability

ZDI-09-093: December 9th, 2009


Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 8457. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Adobe Flash Player. User interaction is required to exploit this vulnerability in that the target must visit a malicious web page or open a malicious SWF file.

The specific flaw exists in the generation of ActionScript exception handlers. In Verifier::parseExceptionHandlers(), a large value for exception_count will result in an integer overflow condition leading to a memory corruption which can be leveraged to execute arbitrary code under the context of the currently logged in user.

Vendor Response

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

Disclosure Timeline

    2008-10-15 - Vulnerability reported to vendor
    2009-12-09 - Coordinated public release of advisory


This vulnerability was discovered by:
    Damian Put