CVE-2021-34921: 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-14899.
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-2021-34921?
CVE-2021-34921 has a critical severity rating due to its potential for remote code execution.
How do I fix CVE-2021-34921?
To fix CVE-2021-34921, update Bentley View to version 10.16.02 or later.
What types of attacks can exploit CVE-2021-34921?
CVE-2021-34921 can be exploited through malicious web pages or files requiring user interaction.
Which versions of Bentley software are affected by CVE-2021-34921?
CVE-2021-34921 affects Bentley View version 10.15.0.75 and prior, as well as Bentley MicroStation versions up to 10.16.02.
Is user interaction necessary for exploiting CVE-2021-34921?
Yes, CVE-2021-34921 requires user interaction to exploit, such as visiting a malicious page or opening a harmful file.