How can this vulnerability be exploited?

This vulnerability can be exploited by the target visiting a malicious page or opening a malicious file.

What is the severity of CVE-2021-46635?

CVE-2021-46635 has a severity level of 7.8 (high).

Which software versions are affected by CVE-2021-46635?

Bentley MicroStation CONNECT 10.16.0.80 is affected by CVE-2021-46635.

How can I fix CVE-2021-46635?

To fix CVE-2021-46635, update Bentley MicroStation CONNECT to a version that is not affected by the vulnerability.

Vulnerability/
CVE-2021-46635

high

7.8

CWE

787

18/2/2022

4/8/2024

CVE-2021-46635: Bentley MicroStation CONNECT DGN File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

Q: What is CVE-2021-46635?

CVE-2021-46635 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80.

First published: Fri Feb 18 2022(Updated: )

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-15507.

Credit: zdi-disclosures@trendmicro.com

Affected Software	Affected Version	How to fix
Bentley MicroStation	<10.16.02
Bentley MicroStation CONNECT	<=10.16.0.80
Bentley View	<10.16.02

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Frequently Asked Questions

What is CVE-2021-46635?
CVE-2021-46635 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80.
How can this vulnerability be exploited?
This vulnerability can be exploited by the target visiting a malicious page or opening a malicious file.
What is the severity of CVE-2021-46635?
CVE-2021-46635 has a severity level of 7.8 (high).
Which software versions are affected by CVE-2021-46635?
Bentley MicroStation CONNECT 10.16.0.80 is affected by CVE-2021-46635.
How can I fix CVE-2021-46635?
To fix CVE-2021-46635, update Bentley MicroStation CONNECT to a version that is not affected by the vulnerability.

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agent/weakness
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agent/title
agent/author
agent/softwarecombine
agent/tags
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agent/first-publish-date
agent/event
collector/zdi-advisory
source/ZDI
alias/ZDI-22-222
alias/ZDI-CAN-15507
alias/CVE-2021-46635
agent/software-canonical-lookup
vendor/bentley
canonical/bentley microstation
canonical/bentley microstation connect
version/bentley microstation connect/10.16.0.80
canonical/bentley view

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