Advisory Details

October 7th, 2022

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

ZDI-22-1387
ZDI-CAN-18677

CVE ID CVE-2022-42418
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 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.

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
  • 2022-09-28 - Vulnerability reported to vendor
  • 2022-10-07 - Coordinated public release of advisory
CREDIT Rocco Calvi (@TecR0c) with TecSecurity
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