TippingPoint Zero Day Initiative

Foxit Reader ConvertToPDF TIFF Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-16-469: August 10th, 2016

CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader. 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 ConvertToPDF plugin. The process does not properly validate user-supplied data which can result in a write past the end of an allocated object. An attacker can leverage this vulnerability to execute under the context of the current process.

Vendor Response

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

Disclosure Timeline

    2016-07-29 - Vulnerability reported to vendor
    2016-08-10 - Coordinated public release of advisory


This vulnerability was discovered by:
    Steven Seeley of Source Incite