Advisory Details

April 29th, 2019

Foxit PhantomPDF net HTML File Parsing Use-After-Free Information Disclosure Vulnerability

ZDI-19-430
ZDI-CAN-7769

CVE ID CVE-2019-6756
CVSS SCORE 3.3, AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
AFFECTED VENDORS Foxit
AFFECTED PRODUCTS PhantomPDF
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on vulnerable 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 parsing of HTML files. 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 in conjunction with other vulnerabilities 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
  • 2019-01-09 - Vulnerability reported to vendor
  • 2019-04-29 - Coordinated public release of advisory
CREDIT Mat Powell of Trend Micro Zero Day Initiative
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