CVE-2021-34920: Bentley View JT File Parsing Out-Of-Bounds Write 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 JT files. Crafted data in a JT 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-14898.
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-2021-34920?
CVE-2021-34920 has been rated as a high severity vulnerability due to its potential for remote code execution.
What types of software are affected by CVE-2021-34920?
CVE-2021-34920 affects Bentley View version 10.15.0.75 and earlier versions of Bentley MicroStation.
How do I fix CVE-2021-34920?
To fix CVE-2021-34920, upgrade to Bentley View 10.16.02 or later and ensure all software is up-to-date.
Who can exploit CVE-2021-34920?
CVE-2021-34920 can be exploited by remote attackers who require user interaction to execute the attack.
What is required for CVE-2021-34920 to be exploited?
Exploitation of CVE-2021-34920 requires the target to visit a malicious web page or open a malicious file.
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