// For flags

CVE-2021-46637

Bentley MicroStation CONNECT DGN File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Bentley MicroStation CONNECT 10.16.0.80. 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 proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-15509.

Esta vulnerabilidad permite a atacantes remotos revelar información confidencial en las instalaciones afectadas de Bentley MicroStation CONNECT versión 10.16.0.80. Es requerida una interacción del usuario para explotar esta vulnerabilidad, ya que el objetivo debe visitar una página maliciosa o abrir un archivo malicioso. El fallo específico se presenta en el análisis de los archivos DGN. El problema es debido a que no es comprobado apropiadamente los datos suministrados por el usuario, lo que puede resultar en una lectura más allá del final de un búfer asignado. Un atacante puede aprovechar esto junto con otras vulnerabilidades para ejecutar código arbitrario en el contexto del proceso actual. Era ZDI-CAN-15509

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Bentley MicroStation CONNECT. 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 proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary 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
None
Availability
None
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-01-26 CVE Reserved
  • 2022-01-31 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-11-03 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-125: Out-of-bounds Read
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Bentley
Search vendor "Bentley"
Microstation
Search vendor "Bentley" for product "Microstation"
< 10.16.02
Search vendor "Bentley" for product "Microstation" and version " < 10.16.02"
-
Affected
Bentley
Search vendor "Bentley"
Microstation Connect
Search vendor "Bentley" for product "Microstation Connect"
<= 10.16.0.80
Search vendor "Bentley" for product "Microstation Connect" and version " <= 10.16.0.80"
-
Affected
Bentley
Search vendor "Bentley"
View
Search vendor "Bentley" for product "View"
< 10.16.02
Search vendor "Bentley" for product "View" and version " < 10.16.02"
-
Affected