Vulnerability-Lookup

VDE-2022-003

Vulnerability from csaf_beckhoffautomationgmbhcokg - Published: 2022-03-01 12:34 - Updated: 2025-06-05 13:28

Summary

BECKHOFF: Null Pointer Dereference vulnerability in products with OPC UA technology

Notes

Summary: By tricking clients of the mentioned products into contacting malicious OPC UA servers and thereby acting as OPC UA clients, a crash of the component can be provoked.

Impact: The mentioned products can be used as clients which contact an OPC UA server. If such connection is made with SecurityMode=None for the connection then the client can receive a malformed message during the conversation which provokes a null pointer dereference within the OPC UA stack of the product. The product crashes then by memory access violation. Though this is uncommon and not recommended, such connections with SecurityMode=None may even be used by OPC UA Servers, for example if they act as client to register at a Discovery Server.

Mitigation: Have your applications configured to use other than SecurityMode=None for all OPC UA connections. Avoid that these connect to an unknown OPC UA server with SecurityMode=None. In particular, avoid that your applications connect to servers which they discover via mDNS, a Local Discovery Server (LDS), an untrusted Global Discovery Server (GDS) or even trusted GDS using SecurityMode=none. Especially in the latter case an adversary might be able to apply the 'man in the middle' pattern to attack the connection and inject a bad message which triggers the vulnerability.

Remediation: Please update to a recent version of the affected product.

CVE-2021-45117

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

6.5 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE-476 - NULL Pointer Dereference

Mitigation Have your applications configured to use other than SecurityMode=None for all OPC UA connections. Avoid that these connect to an unknown OPC UA server with SecurityMode=None. In particular, avoid that your applications connect to servers which they discover via mDNS, a Local Discovery Server (LDS), an untrusted Global Discovery Server (GDS) or even trusted GDS using SecurityMode=none. Especially in the latter case an adversary might be able to apply the 'man in the middle' pattern to attack the connection and inject a bad message which triggers the vulnerability.

Vendor Fix Please update to a recent version of the affected product.

Affected products

Known affected 12 products

Product	Identifier	Version	Remediation
EK9160 (TcOpcUaServer) <3.2.0.239 BECKHOFF / Software / EK9160 (TcOpcUaServer)		<3.2.0.239
IPC Diagnostic UA Server on windows images (MDP UA Server) <3.1.0.8 BECKHOFF / Software / IPC Diagnostic UA Server on windows images (MDP UA Server)		<3.1.0.8
TF2110 (Setup) <1.12.754.0 BECKHOFF / Software / TF2110 (Setup)		<1.12.754.0
TF6100-OPC-UA-Client (TcOpcUaClient) <2.2.9.1 BECKHOFF / Software / TF6100-OPC-UA-Client (TcOpcUaClient)		<2.2.9.1
TF6100-OPC-UA-Gateway (TcOpcUaGateway) <1.5.8.454 BECKHOFF / Software / TF6100-OPC-UA-Gateway (TcOpcUaGateway)		<1.5.8.454
TF6100-OPC-UA-Server (TcOpcUaServer) <3.2.0.240 BECKHOFF / Software / TF6100-OPC-UA-Server (TcOpcUaServer)		<3.2.0.240
TS6100-0030-OPC-UA (TcOpcUaClient) <2.2.9.1 BECKHOFF / Software / TS6100-0030-OPC-UA (TcOpcUaClient)		<2.2.9.1
TS6100-0030-OPC-UA (TcOpcUaGateway) <1.5.8.454 BECKHOFF / Software / TS6100-0030-OPC-UA (TcOpcUaGateway)		<1.5.8.454
TS6100-0030-OPC-UA (TcOpcUaServer) <3.2.0.240 BECKHOFF / Software / TS6100-0030-OPC-UA (TcOpcUaServer)		<3.2.0.240
TS6100-OPC-UA (TcOpcUaClient) <2.2.9.1 BECKHOFF / Software / TS6100-OPC-UA (TcOpcUaClient)		<2.2.9.1
TS6100-OPC-UA (TcOpcUaGateway) <1.5.8.454 BECKHOFF / Software / TS6100-OPC-UA (TcOpcUaGateway)		<1.5.8.454
TS6100-OPC-UA (TcOpcUaServer) <3.2.0.240 BECKHOFF / Software / TS6100-OPC-UA (TcOpcUaServer)		<3.2.0.240

References

4 references

URL	Category
https://certvde.com/en/advisories/VDE-2022-003/	self
https://beckhoff.csaf-tp.certvde.com/.well-known/…	self
https://www.beckhoff.com	external
https://certvde.com/en/advisories/vendor/beckhoff/	external

Acknowledgments

CERT@VDE certvde.com

OPC Foundation

Unified Automation

JSON

To clipboard

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          "group_ids": [
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "environmentalScore": 6.5,
            "environmentalSeverity": "MEDIUM",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 6.5,
            "temporalSeverity": "MEDIUM",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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            "CSAFPID-51004",
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            "CSAFPID-51008",
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            "CSAFPID-510010",
            "CSAFPID-510011",
            "CSAFPID-510012"
          ]
        }
      ],
      "title": "CVE-2021-45117"
    }
  ]
}

CVE-2021-45117 (GCVE-0-2021-45117)

Vulnerability from cvelistv5 – Published: 2022-03-21 14:05 – Updated: 2024-08-04 04:39

Summary

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

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://www.youtube.com/watch?v=qv-RBdCaV4k	x_refsource_MISC
https://files.opcfoundation.org/SecurityBulletins…	x_refsource_MISC
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.