Advisory Details

May 7th, 2021

Foxit Reader U3D File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-21-533
ZDI-CAN-13241

CVE ID CVE-2021-31444
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 Reader
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit Reader. 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 U3D objects embedded in PDF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary 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
  • 2021-02-10 - Vulnerability reported to vendor
  • 2021-05-07 - Coordinated public release of advisory
  • 2021-05-07 - Advisory Updated
CREDIT Mat Powell of Trend Micro Zero Day Initiative
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