Advisory Details

January 25th, 2019

Foxit PhantomPDF setInterval Use-After-Free Information Disclosure Vulnerability

ZDI-19-140
ZDI-CAN-7452

CVE ID CVE-2019-6734
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 handling of the setInterval method. By performing actions in JavaScript, an attacker can cause a pointer to be reused after it has been freed. 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
  • 2018-11-07 - Vulnerability reported to vendor
  • 2019-01-25 - Coordinated public release of advisory
CREDIT Anonymous
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