TippingPoint Zero Day Initiative

Adobe Acrobat PDF Javascript getCosObj Memory Corruption Vulnerability

ZDI-08-074: November 4th, 2008


Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 5941. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute code on vulnerable installations of Adobe Acrobat. User interaction is required in that a user must visit a malicious web site.

The specific flaw exists when processing malicious javascript contained in a PDF document. When creating a Collab object and performing a specific sequence of actions on it, memory corruption occurs potentially resulting in remote code execution. If successfully exploited full control of the affected machine running under the credentials of the currently logged in user can be achieved.

Vendor Response

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

Disclosure Timeline

    2008-05-12 - Vulnerability reported to vendor
    2008-11-04 - Coordinated public release of advisory


This vulnerability was discovered by:
    Peter Vreugdenhil