CVE-2021-46636 Explained : Impact and Mitigation
Learn about CVE-2021-46636, a high severity vulnerability in Bentley MicroStation CONNECT 10.16.0.80 allowing remote code execution. Understand the impact, affected systems, and mitigation steps.
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 DGN files. Crafted data in a DGN file can trigger a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. CVE-2021-46636 has a CVSS base score of 7.8, indicating a high severity vulnerability.
Understanding CVE-2021-46636
This CVE identifies a vulnerability in Bentley MicroStation CONNECT 10.16.0.80 that can be exploited by remote attackers to execute arbitrary code on the target system.
What is CVE-2021-46636?
- A vulnerability in Bentley MicroStation CONNECT 10.16.0.80 that allows remote code execution.
- Attackers can exploit this by enticing a user to open a malicious file or visit a crafted webpage.
The Impact of CVE-2021-46636
The vulnerability has the following impact:
- Attack Complexity: Low
- Attack Vector: Local
- Availability Impact: High
- Base Score: 7.8 (High Severity)
- Confidentiality Impact: High
- Integrity Impact: High
- User Interaction: Required
Technical Details of CVE-2021-46636
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability allows for executing arbitrary code due to an issue in parsing DGN files in Bentley MicroStation CONNECT 10.16.0.80.
Affected Systems and Versions
- Product: MicroStation CONNECT
- Vendor: Bentley
- Version: 10.16.0.80
Exploitation Mechanism
- Attackers exploit the flaw by manipulating data in crafted DGN files to trigger a buffer overflow.
Mitigation and Prevention
Understanding how to mitigate and prevent this vulnerability is crucial.
Immediate Steps to Take
- Update to a non-vulnerable version of Bentley MicroStation CONNECT.
- Be cautious when opening files or visiting websites.
Long-Term Security Practices
- Regularly update software to patch known vulnerabilities.
- Educate users on the risks of opening unknown files or visiting suspicious websites.
Patching and Updates
- Keep Bentley MicroStation CONNECT and other software up to date with the latest security patches.