PT-2022-12872 · Bentley · Bentley Microstation Connect

Mat Powell · Published 2022-01-31 · Updated 2022-02-28 · CVE-2021-46634

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 parsing of JT files, specifically when crafted data in a JT file can trigger a write past the end of an allocated buffer, allowing an attacker to execute code in the context of the current process.

Recommendations For Bentley MicroStation CONNECT version 10.16.0.80, consider avoiding the use of JT files from untrusted sources until a patch is available. As a temporary workaround, restrict the parsing of JT 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.

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-46634

ZDI-22-221

Affected Products

Bentley Microstation Connect

References · 4

• https://zerodayinitiative.com/advisories/ZDI-22-221 · Security Note
• https://osv.dev/vulnerability/CVE-2021-46634 · Vendor Advisory
• https://bentley.com/en/common-vulnerability-exposure/BE-2021-0005 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46634 · Security Note