Advisory Details

August 10th, 2016

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

ZDI-16-467
ZDI-CAN-3891

CVE ID
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Foxit
AFFECTED PRODUCTS Reader
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 use this information in conjunction with other vulnerabilities to execute code in the context of the process.

VENDOR RESPONSE Foxit has issued an update to correct this vulnerability. More details can be found at:
https://www.foxitsoftware.com/support/security-bulletins.php
DISCLOSURE TIMELINE
  • 2016-07-27 - Vulnerability reported to vendor
  • 2016-08-10 - Coordinated public release of advisory
CREDIT Steven Seeley of Source Incite
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