Foxit Reader ConvertToPDF TIFF Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

2017-03-09T00:00:00
ID ZDI-17-133
Type zdi
Reporter Ke Liu of Tencent's Xuanwu LAB
Modified 2017-03-09T00:00:00

Description

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 TIFF images. 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.