PT-2021-20730 · Bentley · Bentley View

Mat Powell · Published 2021-11-04 · Updated 2022-01-14 · CVE-2021-34886

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. It requires user interaction, 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 validating the existence of an object prior to performing operations on it. An attacker can leverage this, potentially 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 FBX files until a patch is available. Avoid opening malicious files or visiting untrusted pages to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2021-34886

ZDI-21-1475

Affected Products

Bentley View

References · 5

• https://bentley.com/en/common-vulnerability-exposure/BE-2021-0012 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-34886 · Security Note
• https://osv.dev/vulnerability/CVE-2021-34886 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-1475 · Security Note
• https://t.me/cybersecuritytechnologies/4672 · Telegram Post