// For flags

CVE-2023-39501

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

Severity Score

7.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

PDF-XChange Editor OXPS File Parsing Untrusted Pointer Dereference Remote Code Execution Vulnerability. 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. Was ZDI-CAN-20034.

Vulnerabilidad de ejecución remota de código de eliminación de referencia de puntero no confiable en el análisis de archivos OXPS del editor PDF-XChange. Esta vulnerabilidad permite a atacantes remotos ejecutar código arbitrario en instalaciones afectadas de PDF-XChange Editor. Se requiere la interacción del usuario para aprovechar esta vulnerabilidad, ya que el objetivo debe visitar una página maliciosa o abrir un archivo malicioso. La falla específica existe en el análisis de archivos OXPS. El problema se debe a la falta de validación adecuada de un valor proporcionado por el usuario antes de eliminar la referencia a él como puntero. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto del proceso actual. Era ZDI-CAN-20034.

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.

*Credits: Mat Powell of Trend Micro Zero Day Initiative
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2023-08-02 CVE Reserved
  • 2023-08-17 CVE Published
  • 2024-05-03 EPSS Updated
  • 2024-08-02 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-822: Untrusted Pointer Dereference
CAPEC
References (1)
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
PDF-XChange
Search vendor "PDF-XChange"
PDF-XChange Editor
Search vendor "PDF-XChange" for product "PDF-XChange Editor"
9.5.366.0
Search vendor "PDF-XChange" for product "PDF-XChange Editor" and version "9.5.366.0"
en
Affected