Common Vulnerability Exposure BE-2021-0006

BE-2021-0006: Out-of-Bounds and use-after-free vulnerabilities in MicroStation and MicroStation-based applications

Bentley ID: BE-2021-0006
CVE ID: CVE-2021-34879, CVE-2021-34883, CVE-2021-34900, CVE-2021-34906, CVE-2021-34908, CVE-2021-34915, CVE-2021-34917, CVE-2021-46583, CVE-2021-46584, CVE-2021-46603, CVE-2021-46614, CVE-2021-46622, CVE-2021-46626
Severity: Severity : 7.8 (High)
Publication date: 7th December 2021
Revision date: 4th February 2022


MicroStation and MicroStation-based applications may be affected by out-of-bounds or use-after-free vulnerabilities when opening maliciously crafted J2K files. Exploiting these vulnerabilities could lead to code execution.


The following vulnerabilities related to this advisory were discovered by TrendMicro ZDI: ZDI-CAN-14832, ZDI-CAN-14836, ZDI-CAN-14867, ZDI-CAN-14879, ZDI-CAN-14881, ZDI-CAN-14893, ZDI-CAN-14895, ZDI-CAN-15377, ZDI-CAN-15378, ZDI-CAN-15397, ZDI-CAN-15408, ZDI-CAN-15416, ZDI-CAN-15456.

Using an affected version of MicroStation or MicroStation-based application to open a j2K file containing maliciously crafted data can trigger an out-of-bounds or use-after-free vulnerability. Exploitation of these vulnerabilities within the parsing of J2K files could enable an attacker to execute arbitrary code in the context of the current process.

Affected Versions

ApplicationsAffected VersionsMitigated Versions
MicroStationVersions prior to 10.16.02.*10.16.02.* and more recent
Bentley ViewVersions prior to 10.16.02.*10.16.02.* 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 J2K files coming from trusted sources.


 Thanks to Mat Powell of Trend Micro Zero Day Initiative for discovering these vulnerabilities.

Revision History

7th December 2021First version of the advisory
4th February 2022Adding new CVE numbers provided by ZDI