TippingPoint Zero Day Initiative

Adobe Shockwave KEY* Chunk Invalid Size Remote Code Execution Vulnerability

ZDI-11-212: June 14th, 2011


CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11354. 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 way Shockwave handles KEY* elements in a Director file. The Shockwave player will allocate memory with a size taken from the Shockwave file but will always copy a few bytes into that allocation. KEY* sizes smaller then 4 will therefore cause an overwrite of the allocation. By cleverly crafting the input file, an attacker can leverage this to execute remote code under the context of the current user.

Vendor Response

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

Disclosure Timeline

    2011-05-12 - Vulnerability reported to vendor
    2011-06-14 - Coordinated public release of advisory


This vulnerability was discovered by:
    Luigi Auriemma