// For flags

CVE-2021-32944

Siemens JT2Go DGN File Parsing Use-After-Free Remote Code Execution Vulnerability

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A use-after-free issue exists in the DGN file-reading procedure in the Drawings SDK (All versions prior to 2022.4) resulting from the lack of proper validation of user-supplied data. This can result in a memory corruption or arbitrary code execution, allowing attackers to cause a denial-of-service condition or execute code in the context of the current process.

Se presenta un problema de uso de la memoria previamente liberada en el procedimiento de lectura de archivos DGN en Drawings SDK (todas las versiones anteriores a 2022.4) resultando en una falta de comprobación apropiada de los datos suministrados por el usuario. Esto puede resultar en una corrupción de memoria o en una ejecución de código arbitrario, permitiendo a atacantes causar una condición de denegación de servicio o ejecutar código en el contexto del proceso actual

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Siemens JT2Go. 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 DGN files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.

*Credits: Brian Gorenc 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
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-05-13 CVE Reserved
  • 2021-06-17 CVE Published
  • 2024-03-02 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-416: Use After Free
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Opendesign
Search vendor "Opendesign"
Drawings Sdk
Search vendor "Opendesign" for product "Drawings Sdk"
< 2022.4
Search vendor "Opendesign" for product "Drawings Sdk" and version " < 2022.4"
-
Affected
Siemens
Search vendor "Siemens"
Comos
Search vendor "Siemens" for product "Comos"
< 10.4.1
Search vendor "Siemens" for product "Comos" and version " < 10.4.1"
-
Affected
Siemens
Search vendor "Siemens"
Jt2go
Search vendor "Siemens" for product "Jt2go"
< 13.2.0.1
Search vendor "Siemens" for product "Jt2go" and version " < 13.2.0.1"
-
Affected
Siemens
Search vendor "Siemens"
Teamcenter Visualization
Search vendor "Siemens" for product "Teamcenter Visualization"
< 13.2.0.1
Search vendor "Siemens" for product "Teamcenter Visualization" and version " < 13.2.0.1"
-
Affected