PDF-XChange Editor AcroForm Out-Of-Bounds Read Remote Code Execution Vulnerability

August 18th, 2022
ZDI-22-1095 ZDI-CAN-17726

CVE ID

CVE-2022-37367

CVSS Score

7.8 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

PDF-XChange

Affected Products

PDF-XChange Editor

Vulnerability Details

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 handling of AcroForms. Crafted data in an AcroForm can trigger a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

PDF-XChange has issued an update to correct this vulnerability. More details can be found at:
https://www.tracker-software.com/product/pdf-xchange-editor/history

Disclosure Timeline

  • 2022-06-28 - Vulnerability reported to vendor
  • 2022-08-18 - Coordinated public release of advisory

Credit

Mat Powell of Trend Micro Zero Day Initiative

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