Bentley ID: BE-2021-0013
CVE ID: CVE-2021-46604, CVE-2021-46618
Severity: 7.8
CVSS v3.1: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Publication date: 2021-12-07
Revision date: 2021-12-07

Summary
MicroStation and MicroStation-based applications may be affected by out-of-bounds vulnerabilities when opening maliciously crafted PNG files. Exploiting these vulnerabilities could lead to code execution.

Details
The following vulnerabilities related to this advisory were discovered by TrendMicro ZDI: ZDI-CAN-15398, ZDI-CAN-15412. Using an affected version of MicroStation or MicroStation-based application to open a PNG file containing maliciously crafted data can force an out-of-bounds read or write. Exploitation of these vulnerabilities within the parsing of PNG files could enable an attacker to execute arbitrary code in the context of the current process.

Affected Versions

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 PNG files coming from trusted sources.

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

Revision History