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CVE-2021-34594

Beckhoff: Relative path traversal vulnerability through TwinCAT OPC UA Server

Published: Nov 4, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-23
6.5MEDIUM
NVD MITRE
EPSS Score
1.1%
Top 37.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

TwinCAT OPC UA Server in TF6100 and TS6100 in product versions before 4.3.48.0 or with TcOpcUaServer versions below 3.2.0.194 are prone to a relative path traversal that allow administrators to create or delete any files on the system.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:NI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-23CWE-22

Affected Products

Beckhoff Automation GmbH & Co. KG
commercial·DEaka twincat, beckhoff
TF6100Mixed
ICS / OT / IoT / plc-scada-hmi
TS6100Mixed
ICS / OT / IoT / plc-scada-hmi
TcOpcUaServerMixed
ICS / OT / IoT / plc-scada-hmi
beckhoff
commercialaka twincat, twincat/bsd
tf6100 firmwareEmbedded
ICS / OT / IoT / plc-scada-hmi
ts6100 firmwareEmbedded
ICS / OT / IoT / plc-scada-hmi
Beckhoff Automation
commercial·DEaka twincat/bsd, beckhoff.device.manager.xar, mdp for beckhoff rt linux
TwinCAT OPC UA ServerOn-prem
ICS / OT / IoT / plc-scada-hmi

Exploitability

Official Patch Available
Workaround Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://cert.vde.com/en/advisories/VDE-2021-051/
cert.vde.com
https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2021-003.pdf
download.beckhoff.com

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