Use-after-free in Bentley View and MicroStation - CVE-2021-34891

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when parsing JT files. A remote attacker can trick the victim to open a specially crafted JT file, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Affected software

How to mitigate CVE-2021-34891

External References

• https://www.bentley.com/en/common-vulnerability-exposure/BE-2021-0005
• https://www.zerodayinitiative.com/advisories/ZDI-21-1480/

Related Security Bulletins

• Multiple vulnerabilities in Bentley View and MicroStation