TippingPoint Zero Day Initiative

Adobe Shockwave rcsL String Parsing Remote Code Execution Vulnerability

ZDI-11-202: 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 11367. For further product information on the TippingPoint IPS:

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 code responsible for parsing the rcsL RIFF chunk within Director files. The logic within the DIRAPI.dll module fails to account for a specific condition and can be made to misallocate a buffer on the heap. By crafting specific values within rcsL substructures an attacker can corrupt memory leading to arbitrary code execution 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

    2011-02-17 - Vulnerability reported to vendor
    2011-06-14 - Coordinated public release of advisory


This vulnerability was discovered by:
    Luigi Auriemma