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Common Vulnerability Exposure BE-2022-0020

BE-2022-0020: DGN File Parsing Out-of-bounds Read and Stack Overflow Vulnerabilities in MicroStation and MicroStation-based applications

Bentley ID: BE-2022-0020
CVE ID: CVE-2022-40201, CVE-2022-41613
Severity: 7.8 (High)
CVSS v3.1: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Publication date: October 20th 2022
Revision date: October 28th 2022

Summary

MicroStation and MicroStation-based applications may be affected by out-of-bounds read and stack overflow vulnerabilities when opening maliciously crafted DGN files. Exploiting these vulnerabilities could lead to information disclosure or arbitrary code execution.

Details

Using an affected version of MicroStation or MicroStation-based application to open a DGN file containing maliciously crafted data can force an out-of-bounds read or force the execution of arbitrary code. Exploitation of these vulnerabilities within the parsing of DGN files could enable an attacker to read information or execute code in the context of the current process.

Affected Versions

Applications Affected Versions Mitigated Versions
MicroStation 10.17.0.209 and prior versions 10.17.1.* and more recent
Bentley View 10.17.0.209 and prior version 10.17.1.* and more recent

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 DGN files coming from trusted sources.

Acknowledgement

Thanks to Michael Heinzl and the Industrial Control Systems Vulnerability Management and Coordination (ICS-VMC) Cybersecurity and Infrastructure Security Agency (CISA) US Department of Homeland Security (DHS) for discovering these vulnerabilities.

Revision History

Date Description
October 20th 2022 First version of the advisory
October 28th 2022 Adding acknowledgment