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CVE-2021-45117

Published: Mar 21, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-476
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
1.4%
Top 31.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-476

Affected Products

n/an/a
OPC UAOPC Foundation
On-prem
ICS / OT / IoT / industrial-network
ua-nodesetopcfoundation
Mixed
OSS Libraries / generic-library
simatic net pcsiemens
On-prem
Enterprise Software / collaboration-groupware
sitop managersiemens
On-prem
Enterprise Software / collaboration-groupware
opc foundationoss-projectICS / OT / IoTaka opc ua
opcfoundationoss-projectOSS Librariesaka opcfoundation
siemenscommercialDEEnterprise Softwareaka siemens ag
and 1 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://www.youtube.com/watch?v=qv-RBdCaV4k
youtube.com
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-45117.pdf
files.opcfoundation.org
https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdf
cert-portal.siemens.com
and 13 more references View all →

Timeline

Published
Mar 21, 2022
Last Updated
Nov 21, 2024

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