PDF-XChange Editor PDF File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

October 7th, 2022
ZDI-22-1341 ZDI-CAN-18324

CVE ID

CVE-2022-42412

CVSS Score

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

Affected Vendors

PDF-XChange

Affected Products

PDF-XChange Editor

Vulnerability Details

This vulnerability allows remote attackers to disclose sensitive information 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 PDF files. Crafted data in a PDF file can trigger a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary 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

  • 2022-08-19 - Vulnerability reported to vendor
  • 2022-10-07 - Coordinated public release of advisory

Credit

Rocco Calvi (@TecR0c) with TecSecurity

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