PT-2022-12834 · Bentley · Microstation Connect

Mat Powell · Published 2022-01-31 · Updated 2022-02-25 · CVE-2021-46596

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, where the target must visit a malicious page or open a malicious file. The flaw exists within the parsing of OBJ 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 version 10.16.0.80, consider disabling the OBJ file parsing functionality until a patch is available to prevent exploitation. Restrict access to malicious pages or files to minimize the risk of sensitive information disclosure. At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2021-46596

ZDI-22-183

Affected Products

Microstation Connect

References · 5

• https://bentley.com/en/common-vulnerability-exposure/BE-2021-0007 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46596 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-22-183 · Security Note
• https://osv.dev/vulnerability/CVE-2021-46596 · Vendor Advisory
• https://t.me/cibsecurity/37768 · Telegram Post