CVE-2021-34898: 
Bentley MicroStation CONNECT vulnerability analysis and mitigation

CVE-2021-34898 is a vulnerability in Bentley View version 10.15.0.75 that allows remote attackers to execute arbitrary code. The vulnerability was discovered by Mat Powell of Trend Micro Zero Day Initiative and was disclosed on December 8, 2021. The flaw exists within the parsing of JT files, where crafted data can trigger a write past the end of an allocated buffer (Zero Day Initiative, NVD).

The vulnerability is classified as an Out-of-bounds Write (CWE-787) with a CVSS v3.1 base score of 7.8 HIGH (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). The attack requires local access and user interaction, as the target must visit a malicious page or open a malicious file. The vulnerability allows an attacker to write data beyond the bounds of an allocated buffer when parsing JT files (NVD, Zero Day Initiative).

If successfully exploited, this vulnerability allows attackers to execute arbitrary code in the context of the current process, potentially leading to complete system compromise with the privileges of the affected application (Zero Day Initiative).

Bentley has released version 10.16.02 to address this vulnerability. Users are recommended to update to the latest version of the software. As a general best practice, it is also recommended to only open JT files from trusted sources (Bentley Advisory).