TippingPoint Zero Day Initiative

Foxit Reader PDF Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-17-456: July 7th, 2017


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows remote attackers to disclose sensitive information 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 parsing of PDF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute code in 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

    2017-05-18 - Vulnerability reported to vendor
    2017-07-07 - Coordinated public release of advisory


This vulnerability was discovered by:
    Ashfaq Ansari - Project Srishti