(Pwn2Own) Adobe Flash Player AS3 ConvolutionFilter Use-After-Free Remote Code Execution Vulnerability

April 15th, 2015
ZDI-15-134 ZDI-CAN-2819

CVE ID

CVE-2015-0349

CVSS Score

6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected Vendors

Adobe

Affected Products

Flash Player

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 specific flaw exists within the processing of AS3 ConvolutionFilter objects. By manipulating the matrix property of a ConvolutionFilter object, an attacker can force a dangling pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process.

Additional Details

Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/flash-player/apsb15-06.html

Disclosure Timeline

  • 2015-03-18 - Vulnerability reported to vendor
  • 2015-04-15 - Coordinated public release of advisory

Credit

Nicolas Joly

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