PT-2022-12887 · Bentley · Bentley Microstation Connect

Mat Powell · Published 2022-01-31 · Updated 2022-02-28 · CVE-2021-46649

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 specific flaw exists within the parsing of DGN files, resulting from the lack of proper validation of user-supplied data. This can lead to a read past the end of an allocated buffer, potentially allowing an attacker to execute arbitrary code in the context of the current process when combined with other vulnerabilities.

Recommendations For Bentley MicroStation CONNECT version 10.16.0.80, consider disabling the parsing of DGN files as a temporary workaround 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.

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2021-46649

ZDI-22-236

Affected Products

Bentley Microstation Connect

References · 6

• https://zerodayinitiative.com/advisories/ZDI-22-236 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-46649 · Security Note
• https://osv.dev/vulnerability/CVE-2021-46649 · Vendor Advisory
• https://bentley.com/en/common-vulnerability-exposure/BE-2021-0009 · Vendor Advisory
• https://t.me/cvenotify/27457 · Telegram Post
• https://t.me/cibsecurity/37781 · Telegram Post