Advisory Details

April 20th, 2018

Foxit Reader pageNum Use-After-Free Remote Code Execution Vulnerability

CVE ID	CVE-2018-9959
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 parsing of the pageNum document attribute. 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	2018-01-31 - Vulnerability reported to vendor 2018-04-20 - Coordinated public release of advisory 2018-04-20 - Advisory Updated
CREDIT	Steven Seeley (mr_me) of Source Incite

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