PT-2022-21908 · Unknown · Opc Ua .Net Standard Reference Server

Published 2022-08-05 · Updated 2022-08-25 · CVE-2022-33916

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions OPC UA .NET Standard Reference Server version 1.04.368

Description The issue allows a remote attacker to cause the application to access sensitive information. This is due to missing authentication information in the BrowseRequest.

Recommendations For OPC UA .NET Standard Reference Server version 1.04.368, consider restricting access to sensitive information until a patch is available. As a temporary workaround, review and strengthen authentication mechanisms for the BrowseRequest to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2022-33916

GHSA-MW9H-HCP7-FGC6

ZDI-22-1064

Affected Products

Opc Ua .Net Standard Reference Server

References · 10

• https://osv.dev/vulnerability/CVE-2022-33916 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-33916 · Security Note
• https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2022-33916.pdf · Vendor Advisory
• https://opcfoundation.org · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-mw9h-hcp7-fgc6 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-22-1064 · Security Note
• https://github.com/OPCFoundation/UA-.NETStandard · Note
• https://github.com/OPCFoundation/UA-.NETStandard/commit/313aa2a2499d8690cf719a67176e131517bb8b78 · Note
• https://t.me/cibsecurity/48565 · Telegram Post
• https://t.me/cvenotify/35150 · Telegram Post