PT-2022-12859 · Bentley · Microstation Connect

Mat Powell · Published 2022-01-31 · Updated 2022-02-28 · CVE-2021-46621

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Bentley MicroStation CONNECT version 10.16.0.80

Description This issue allows remote attackers to execute arbitrary code on affected installations. User interaction is required, where the target must visit a malicious page or open a malicious file. The flaw exists within the handling of JT files due to the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this to execute code in the context of the current process.

Recommendations For version 10.16.0.80, consider disabling the handling of JT files until a patch is available. Restrict access to potentially malicious pages or files to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

CVE-2021-46621

ZDI-22-208

Affected Products

Microstation Connect

References · 5

• https://zerodayinitiative.com/advisories/ZDI-22-208 · Security Note
• https://osv.dev/vulnerability/CVE-2021-46621 · Vendor Advisory
• https://bentley.com/en/common-vulnerability-exposure/BE-2021-0005 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46621 · Security Note
• https://t.me/cibsecurity/37752 · Telegram Post