CVE-2021-46645: bentley microstation Out-of-bounds Write

Vulnerability summary

CVE-2021-46645 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in bentley microstation. EPSS estimates a 2.09% chance of exploitation in the next 30 days, higher than 81.2% of scored vulnerabilities.

Timeline

1. 18-02-2022
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

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 BMP images. Crafted data in a BMP image can trigger a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-15531.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.