CVE-2021-34920: Bentley View JT File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
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.
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View. 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.
Affected Software
Event History
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.