Headline
CVE-2022-28643: BE-2022-0004 | Bentley Systems | Infrastructure Engineering Software Company
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.02.34. 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 DGN files. Crafted data in a DGN file 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-16468.
BE-2022-0004: DGN File Parsing Out-of-bounds vulnerabilities in MicroStation and MicroStation-based applications
Bentley ID: BE-2022-0004
CVE ID: CVE-2021-46646, CVE-2022-28642, CVE-2022-28643, CVE-2022-28644, CVE-2022-28645
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 are affected by DGN file parsing out-of-bounds vulnerabilities when opening maliciously crafted DGN files. Exploiting these vulnerabilities lead to arbitrary code execution.
**Details
**The following vulnerabilities related to this advisory were discovered by TrendMicro ZDI: ZDI-CAN-15532, ZDI-CAN-16424, ZDI-CAN-16468, ZDI-CAN-16469 and ZDI-CAN-16470. 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 write. Exploitation of these vulnerabilities within the parsing of DGN files enable an attacker to execute arbitrary code in the context of the current process.
Affected Versions
Applications
Affected Versions
Mitigated Versions
MicroStation
10.16.02.* and prior versions
10.16.03.* and more recent
Bentley View
10.16.02.* and prior versions
10.16.03.* 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 Mat Powell of Trend Micro Zero Day Initiative for discovering these vulnerabilities.
Revision History
Date
Description
2022-04-05
First version of this advisory
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