PT-2021-20754 · Bentley · Bentley View

Mat Powell · Published 2021-12-08 · Updated 2022-01-14 · CVE-2021-34910

Positive Technologies (AI Summary)

CVSS v2.0

4.3

Medium

Base vector

AV:N/AC:M/Au:N/C:P/I:N/A:N

Name of the Vulnerable Software and Affected Versions: Bentley View version 10.15.0.75

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 DGN 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 View version 10.15.0.75, as a temporary workaround, consider restricting the parsing of DGN files until a patch is available. Avoid opening malicious files or visiting suspicious pages to minimize the risk of exploitation. 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-2021-34910

ZDI-21-1499

Affected Products

Bentley View

References · 5

• https://bentley.com/en/common-vulnerability-exposure/BE-2021-0009 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-34910 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-1499 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-34910 · Security Note
• https://t.me/cibsecurity/35463 · Telegram Post