BE-2022-0012: FBX File Parsing Out-of-bounds Read Vulnerabilities in MicroStation and MicroStation-based applications
Bentley ID: BE-2022-0012
CVE ID: CVE-2022-35905
Severity: 3.3
CVSS v3.1: AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Publication date: 2022-07-13
Revision date: 2022-07-13
Summary
MicroStation and MicroStation-based applications may be affected by out-of-bounds read vulnerabilities when opening maliciously crafted FBX files. Exploiting these vulnerabilities could lead to information disclosure.
Details
Using an affected version of MicroStation or MicroStation-based application to open a FBX file containing maliciously crafted data can force an out-of-bounds read. Exploitation of these vulnerabilities within the parsing of FBX files could enable an attacker to read information in the context of the current process.
Affected Versions
| Applications | Affected Versions | Mitigated Versions |
| MicroStation | 10.16.* and prior versions | 10.17.0.* and more recent |
| Bentley View | 10.16.* and prior versions | 10.17.0.* 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 FBX files coming from trusted sources.
Acknowledgement
Thanks to xina1i for discovering these vulnerabilities.
Revision History
| Date | Description |
| 2022-07-13 | First version of this advisory |
| 2022-07-18 | Adding CVE number |