CVE-2021-34905: Bentley View DGN File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
First published: Thu Jan 13 2022(Updated: )
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. 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 the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14878.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Bentley View | <10.16.02 | |
| Bentley MicroStation | <10.16.02 | |
| Bentley Systems |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-34905?
CVE-2021-34905 is rated as high severity due to its potential for remote code execution.
How do I fix CVE-2021-34905?
To mitigate CVE-2021-34905, users should update Bentley View and Bentley MicroStation to version 10.16.02 or later.
Who is affected by CVE-2021-34905?
CVE-2021-34905 affects users of Bentley View version 10.15.0.75 and earlier, as well as Bentley MicroStation versions below 10.16.02.
How can attackers exploit CVE-2021-34905?
Attackers can exploit CVE-2021-34905 by enticing users to visit a malicious webpage or open a compromised file.
Is user interaction required to exploit CVE-2021-34905?
Yes, user interaction is required to exploit CVE-2021-34905, as the target must engage with malicious content.
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