Advisory Details

September 8th, 2023

PDF-XChange Editor EMF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-23-1389
ZDI-CAN-22061

CVE ID CVE-2023-42085
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 EMF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based 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/support/security-bulletins.html
DISCLOSURE TIMELINE
  • 2023-08-29 - Vulnerability reported to vendor
  • 2023-09-08 - Coordinated public release of advisory
CREDIT Mat Powell of Trend Micro Zero Day Initiative
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