TippingPoint Zero Day Initiative

Adobe Flash Player MP4 sequenceParameterSetNALUnit Remote Code Execution Vulnerability

ZDI-11-276: August 23rd, 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 11164. For further product information on the TippingPoint IPS:

Vulnerability Details

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

The flaw exists within the sequenceParameterSetNALUnit component. When handling the num_ref_frames_in_pic_order_cnt_cycle value the size is not validated and the process blindly copies user supplied data from offset_for_ref_frame into a fixed-length buffer on the stack. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the browser.

Vendor Response

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

Disclosure Timeline

    2011-02-10 - Vulnerability reported to vendor
    2011-08-23 - Coordinated public release of advisory


This vulnerability was discovered by: