CVE-2021-34938: Bentley View JT File Parsing Heap-based Buffer Overflow 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. 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-14995.
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. 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-34938?
CVE-2021-34938 has a high severity rating due to its potential for remote code execution.
How do I fix CVE-2021-34938?
To fix CVE-2021-34938, upgrade Bentley View and MicroStation to versions beyond 10.16.02.
What software is affected by CVE-2021-34938?
CVE-2021-34938 affects Bentley View versions up to 10.16.02 and all versions of Bentley MicroStation up to the same version.
Is user interaction required to exploit CVE-2021-34938?
Yes, user interaction is required to exploit CVE-2021-34938, as the target must visit a malicious page or open a malicious file.
What type of vulnerability is CVE-2021-34938?
CVE-2021-34938 is classified as a remote code execution vulnerability.