TippingPoint Zero Day Initiative

Adobe Shockwave iml32.dll DEMX Remote Code Execution Vulnerability

ZDI-12-041: March 1st, 2012


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of the Adobe Shockwave Player. 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 Shockwave 3d Asset.x32 module responsible for parsing 3D record types within RIFF-based Director files. The code within this module trusts invalid size checks to prevent integer wraps. Due to invalid compares, an integer overflow can occur when processing the data section of DEMX chunks, which subsequently leads to a heap-based buffer overflow. This can be leveraged to execute remote 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

    2011-05-25 - Vulnerability reported to vendor
    2012-03-01 - Coordinated public release of advisory


This vulnerability was discovered by:
    Luigi Auriemma