PT-2021-22995 · Softing · Softing Industrial Automation Opc Ua C++ Sdk

Published 2021-11-10 · Updated 2021-11-16 · CVE-2021-40871

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Softing Industrial Automation OPC UA C++ SDK versions prior to 5.66

Description An issue allows remote attackers to cause a denial of service (DoS) by sending crafted messages to an OPC/UA client. The client process may crash unexpectedly due to a wrong type cast and must be restarted.

Recommendations For versions prior to 5.66, update to version 5.66 or later to resolve the issue.

Fix

Type Confusion

Weakness Enumeration

CWE-843

Related Identifiers

CVE-2021-40871

Affected Products

Softing Industrial Automation Opc Ua C++ Sdk

References · 5

• https://osv.dev/vulnerability/CVE-2021-40871 · Vendor Advisory
• https://industrial.softing.com/fileadmin/sof-files/pdf/ia/support/Security_Bulletin-CVE-2021-40871.pdf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-40871 · Security Note
• https://industrial.softing.com · Vendor Advisory
• https://t.me/cibsecurity/32230 · Telegram Post