PT-2021-20731 · Bentley · Bentley View

Mat Powell · Published 2021-12-08 · Updated 2022-01-14 · CVE-2021-34887

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 PDF 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, 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 disabling the PDF file parsing functionality until a patch is available. Restrict access to malicious pages or files to minimize the risk of exploitation.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2021-34887

ZDI-21-1476

Affected Products

Bentley View

References · 4

• https://osv.dev/vulnerability/CVE-2021-34887 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-34887 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-1476 · Security Note
• https://bentley.com/en/common-vulnerability-exposure/BE-2021-0003 · Vendor Advisory