Advisory Details

August 17th, 2023

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

CVE ID	CVE-2023-39501
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 OXPS 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	Fixed in PDF-XChange Editor V9 (9.5.368) and V10 (10.0.1) https://www.tracker-software.com/product/pdf-xchange-editor/history
DISCLOSURE TIMELINE	2023-01-07 - Vulnerability reported to vendor 2023-08-17 - Coordinated public release of advisory
CREDIT	Mat Powell of Trend Micro Zero Day Initiative

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