CVE-2021-34943: Bentley View JT File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
First published: Thu Jan 13 2022(Updated: )
This vulnerability allows remote attackers to disclose sensitive information 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 user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-15051.
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-2021-34943?
CVE-2021-34943 has been assigned a medium severity rating due to the requirement for user interaction to exploit the vulnerability.
How do I fix CVE-2021-34943?
To fix CVE-2021-34943, users should upgrade to a version of Bentley View or Bentley MicroStation greater than 10.16.02.
What types of software are affected by CVE-2021-34943?
CVE-2021-34943 affects Bentley View versions up to 10.16.02 and Bentley MicroStation versions up to 10.16.02.
What kind of information can be disclosed due to CVE-2021-34943?
CVE-2021-34943 allows remote attackers to disclose sensitive information if the target opens a malicious file or visits a malicious page.
Is user interaction required to exploit CVE-2021-34943?
Yes, user interaction is required to exploit CVE-2021-34943, as the target must visit a malicious page or open a malicious file.
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