PT-2021-20788 · Bentley · Bentley View

Mat Powell · Published 2021-12-08 · Updated 2022-01-14 · CVE-2021-34943

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. It requires user interaction, such as visiting a malicious page or opening a malicious file. The flaw exists within the parsing of JT files due to the lack of proper validation of user-supplied data, resulting in a read past the end of an allocated buffer. This can be leveraged 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 JT 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.

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2021-34943

ZDI-21-1531

Affected Products

Bentley View

References · 4

• https://bentley.com/en/common-vulnerability-exposure/BE-2021-0005 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-1531 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-34943 · Security Note
• https://osv.dev/vulnerability/CVE-2021-34943 · Vendor Advisory