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BE-2022-0009: SKP File Parsing Use-After-Free vulnerabilities in MicroStation and MicroStation-based applications

Bentley ID: BE-2022-0009
CVE ID: CVE-2022-28303, CVE-2022-28310
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: 5th April 2022
Revision date:  5th April 2022


Description

Summary:

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

Details:

The following vulnerabilities related to this advisory were discovered by TrendMicro ZDI: ZDI-CAN-16280 and ZDI-CAN-16339

Using an affected version of MicroStation or MicroStation-based application to open a SKP file containing maliciously crafted data can force a use-after-free vulnerability. Exploitation of these vulnerabilities within the parsing of SKP files could 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 version 10.16.03.* and more recent
Bentley View 10.16.02.* and prior version 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 SKP files coming from trusted sources.


Acknowledgement

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

Revision History

Date Description
5th April 2022 First version of the advisory