CVE-2021-46633: Bentley MicroStation CONNECT PDF File Parsing Use-After-Free Remote Code Execution Vulnerability
First published: Fri Feb 18 2022(Updated: )
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. 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 PDF files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-15463.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Bentley MicroStation | <10.16.02 | |
| Bentley MicroStation CONNECT | <=10.16.0.80 | |
| Bentley View | <10.16.02 | |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Bentley MicroStation vulnerability?
The vulnerability ID for this Bentley MicroStation vulnerability is CVE-2021-46633.
What is the severity rating of CVE-2021-46633?
CVE-2021-46633 has a severity rating of 7.8 (High).
How can remote attackers exploit CVE-2021-46633?
Remote attackers can exploit CVE-2021-46633 by executing arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. User interaction is required, such as visiting a malicious page or opening a malicious file.
Which software versions are affected by CVE-2021-46633?
CVE-2021-46633 affects Bentley MicroStation versions up to and excluding 10.16.02, Bentley MicroStation CONNECT version 10.16.0.80, and Bentley View versions up to and excluding 10.16.02.
Are there any references for CVE-2021-46633?
Yes, you can find references for CVE-2021-46633 at the following links: [Reference 1](https://www.bentley.com/en/common-vulnerability-exposure/BE-2021-0003) and [Reference 2](https://www.zerodayinitiative.com/advisories/ZDI-22-220/).
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