PT-2022-2716 · Opcua · Opcua

Published 2022-03-21 · Updated 2022-09-03 · CVE-2021-45117

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions OPC UA (affected versions not specified)

Description The issue is related to the OPC autogenerated ANSI C stack stubs in the NodeSets, which do not handle all error cases, potentially leading to a NULL pointer dereference. This could allow a remote attacker to cause a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2022-03215

CVE-2021-45117

Affected Products

Opcua

References · 10

• 🔥 https://youtube.com/watch?v=qv-RBdCaV4k · Exploit
• https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-45117.pdf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-45117 · Security Note
• https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdf · Patch
• https://osv.dev/vulnerability/CVE-2021-45117 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-03215 · Security Note
• https://t.me/cibsecurity/39310 · Telegram Post
• https://t.me/cvenotify/35687 · Telegram Post
• https://vuldb.com/ru/?id.195555 · Note
• https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2022-001.pdf · Note