Bentley ID: BE-2022-0008
CVE ID: CVE-2022-28304, CVE-2022-28305, CVE-2022-28306
Severity: 7.8
CVSS v3.1: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Publication date: 2022-04-05
Revision date: 2022-04-05

Summary
MicroStation and MicroStation-based applications may be affected by stack overflow vulnerabilities when opening maliciously crafted OBJ files. Exploiting these vulnerabilities could lead to code execution.

Details
The following vulnerabilities related to this advisory were discovered by TrendMicro ZDI: ZDI-CAN-16171, ZDI-CAN-16172 and ZDI-CAN-16174. Using an affected version of MicroStation or MicroStation-based application to open a OBJ file containing maliciously crafted data can force stack overflows. Exploitation of these vulnerabilities within the parsing of OBJ files could enable an attacker to execute arbitrary code in the context of the current process.

Affected Versions

Recommended Mitigations
Bentley recommends updating to the latest versions of MicroStation and MicroStation-based applications. As a general best practice, it is also recommended to only open OBJ files coming from trusted sources.

Acknowledgement
Thanks to Anonymous working with Trend Micro Zero Day Initiative for finding these vulnerabilities.

Revision History