BE-2021-0011: Use-after-free vulnerabilities in MicroStation and MicroStation-based applications
Bentley ID: BE-2021-0011
CVE ID: CVE-2021-46613, CVE-2021-46627
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: 7th December 2021
Revision date: 4th February 2022
MicroStation and MicroStation-based applications may be affected by a use-after-free vulnerabilities when opening maliciously crafted DXF files. Exploiting these vulnerabilities could lead to code execution.
The following vulnerabilities related to this advisory was discovered by TrendMicro ZDI: ZDI-CAN-15407, ZDI-CAN-15457.
Using an affected version of MicroStation or MicroStation-based application to open a DXF file containing maliciously crafted data can trigger use-after-free vulnerabilities. Exploitation of these vulnerabilities within the parsing of DXF files could enable an attacker to execute arbitrary code in the context of the current process.
|Applications||Affected Versions||Mitigated Versions|
|MicroStation||Versions prior to 10.16.02.*||10.16.02.* and more recent|
|Bentley View||Versions prior to 10.16.02.*||10.16.02.* and more recent|
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 DXF files coming from trusted sources.
Thanks to Mat Powell of Trend Micro Zero Day Initiative for discovering these vulnerabilities.
|7th December 2021||First version of the advisory|
|4th February 2022||Adding the CVE numbers provided by ZDI|