Foxit Reader XFA Button execEvent Use-After-Free Remote Code Execution Vulnerability

2018-04-20T00:00:00
ID ZDI-18-354
Type zdi
Reporter Steven Seeley of Source Incite
Modified 2018-06-22T00:00:00

Description

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 XFA execEvent method of Button elements. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code under the context of the current process.