PT-2022-12803 · Bentley · Bentley Microstation Connect

Xina1I · Published 2022-01-31 · Updated 2022-02-25 · CVE-2021-46565

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 due to the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this to execute code in the context of the current process.

Recommendations For Bentley MicroStation CONNECT version 10.16.0.80, update to a version that addresses the JT file parsing stack-based buffer overflow issue to prevent remote code execution. As a temporary workaround, consider restricting the opening of JT files from untrusted sources until a patch is available.

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2021-46565

ZDI-22-152

Affected Products

Bentley Microstation Connect

References · 4

• https://bentley.com/en/common-vulnerability-exposure/BE-2021-0005 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-22-152 · Security Note
• https://osv.dev/vulnerability/CVE-2021-46565 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46565 · Security Note