Advisory Details

February 11th, 2020

Foxit PhantomPDF HTML2PDF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-20-209
ZDI-CAN-9591

CVE ID CVE-2020-8853
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 conversion of HTML files to PDF. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated structure. 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
  • 2019-10-30 - Vulnerability reported to vendor
  • 2020-02-11 - Coordinated public release of advisory
CREDIT rgod of 9sg
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