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
CVSS v3.1: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Publication date: 2022-10-20
Revision date: 2022-10-20
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 versions | 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 |
| 2022-10-20 | First version of this advisory |
| 2022-10-28 | Adding acknowledgment |
