Advisory Details

August 5th, 2022

Foxit PDF Editor JavaScript Optimization Use-After-Free Remote Code Execution Vulnerability

ZDI-22-1050
ZDI-CAN-16867

CVE ID CVE-2022-37378
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 PDF Editor
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Editor. 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 optimization of JavaScript functions. 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.foxit.com/support/security-bulletins.html
DISCLOSURE TIMELINE
  • 2022-03-25 - Vulnerability reported to vendor
  • 2022-08-05 - Coordinated public release of advisory
CREDIT DoHyun Lee(@l33d0hyun) of DNSLab, Korea University
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