Advisory Details

April 20th, 2018

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

CVE ID	CVE-2018-9953
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 XFA resolveNodes 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.
ADDITIONAL DETAILS	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	2018-01-30 - Vulnerability reported to vendor 2018-04-20 - Coordinated public release of advisory 2018-04-20 - Advisory Updated
CREDIT	Steven Seeley of Source Incite

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