Published advisory · ZDI-22-1387

PDF-XChange Editor TIF File Parsing Untrusted Pointer Dereference Remote Code Execution Vulnerability

Published Rocco Calvi
CVSS severity 7.8/ 10.0 · High AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vulnerability analysis

This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. 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 TIF files. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Disclosure timeline

  1. Vulnerability reported to vendor
  2. Coordinated public release of advisory

References