CVE-2021-46639: Bentley MicroStation CONNECT DGN File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code 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. Crafted data in a DGN file can trigger a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-15511.
Other sources
This vulnerability allows remote attackers to execute arbitrary code 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. Crafted data in a DGN file can trigger a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-46639?
CVE-2021-46639 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80.
How can I exploit CVE-2021-46639?
To exploit CVE-2021-46639, you need to visit a malicious page or open a malicious file.
Which software versions are affected by CVE-2021-46639?
Bentley MicroStation CONNECT versions up to and including 10.16.0.80 are affected by CVE-2021-46639.
What is the severity rating of CVE-2021-46639?
CVE-2021-46639 has a severity rating of 7.8 (high).
How do I fix CVE-2021-46639?
To fix CVE-2021-46639, users should update Bentley MicroStation CONNECT to a version above 10.16.0.80.