TippingPoint Zero Day Initiative
 

Adobe Shockwave rcsL Chunk Parsing Misallocation Remote Code Execution Vulnerability

ZDI-11-210: June 14th, 2011

CVE ID

CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11356. 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 rcsL chunk inside Adobe's RIFF-based Director file format. The code within the IML32.dll is affected by an integer overflow caused by the allocation of the input size plus 1 and the subsequent copying of the input string using the original size. The given size will wrap, causing a small buffer to be allocated. This can lead to memory corruption which can be leveraged 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

    2011-04-20 - Vulnerability reported to vendor
    2011-06-14 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Luigi Auriemma