TippingPoint Zero Day Initiative

Adobe Shockwave Director PAMI Chunk Remote Code Execution Vulnerability

ZDI-10-089: May 11th, 2010


CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 9689. For further product information on the TippingPoint IPS:

Vulnerability Details

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

The specific flaw exists within the code responsible for parsing Director files. When the application parses the pami RIFF chunk, it trusts an offset value and seeks into the file data. If provided with signed values in the data at the given offset, the process can be made to incorrectly calculate a pointer and operate on the data at it's location. This can be abused by an attacker to execute arbitrary code under the context of the user running the browser.

Vendor Response

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

Disclosure Timeline

    2010-04-08 - Vulnerability reported to vendor
    2010-05-11 - Coordinated public release of advisory


This vulnerability was discovered by: