PT-2022-12858 · Bentley · Bentley Microstation Connect

Mat Powell · Published 2022-01-31 · Updated 2022-02-28 · CVE-2021-46620

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description This issue allows remote attackers to disclose sensitive information on affected installations. User interaction is required to exploit this, where the target must visit a malicious page or open a malicious file. The flaw exists within the parsing of FBX files due to the lack of proper validation of user-supplied data, resulting in a read past the end of an allocated buffer. An attacker can leverage this, in conjunction with other issues, to execute arbitrary code in the context of the current process.

Recommendations For Bentley MicroStation CONNECT version 10.16.0.80, consider disabling the FBX file parsing functionality until a patch is available to prevent exploitation. Restrict access to FBX files to minimize the risk of sensitive information disclosure. Avoid using user-supplied data in the FBX file parsing process until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2021-46620

ZDI-22-207

Affected Products

Bentley Microstation Connect

References · 5

• https://zerodayinitiative.com/advisories/ZDI-22-207 · Security Note
• https://bentley.com/en/common-vulnerability-exposure/BE-2021-0012 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46620 · Security Note
• https://osv.dev/vulnerability/CVE-2021-46620 · Vendor Advisory
• https://t.me/cibsecurity/37767 · Telegram Post