Advisory Details

October 11th, 2018

Foxit Reader XFA host response Use-After-Free Remote Code Execution Vulnerability

ZDI-18-1226
ZDI-CAN-6509

CVE ID CVE-2018-17658
CVSS SCORE 7.8, (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
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 handling of the respose property of a host object. 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 in 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
  • 2018-06-28 - Vulnerability reported to vendor
  • 2018-10-11 - Coordinated public release of advisory
CREDIT Esteban Ruiz (mr_me) of Source Incite
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