Advisory Details

October 22nd, 2019

Foxit PhantomPDF Signature Field OnFocus Use-After-Free Remote Code Execution Vulnerability

ZDI-19-910
ZDI-CAN-9091

CVE ID CVE-2019-17140
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 PhantomPDF
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF. 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 OnFocus event. 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
  • 2019-08-21 - Vulnerability reported to vendor
  • 2019-10-22 - Coordinated public release of advisory
CREDIT RockStar
BACK TO ADVISORIES