Vulnerability-Lookup

CVE-2021-34570 (GCVE-0-2021-34570)

Vulnerability from cvelistv5 – Published: 2021-09-27 08:25 – Updated: 2024-09-16 22:09

Title

Phoenix Contact: DoS for PLCnext Control devices in versions prior to 2021.0.5 LTS

Summary

Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.

Severity

7.5 (High)


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

CWE

CWE-20 - Improper Input Validation

Assigner

CERTVDE CNA under the icscert root

CNA scorecard B 76/100 over 151 records in the last 180 days details

References

1 reference

URL	Tags
https://cert.vde.com/en/advisories/VDE-2021-029/	x_refsource_CONFIRM

Impacted products

3 products

Vendor	Product	Version	CPE status
Phoenix Contact	AXC F	Affected: AXC F 1152 (1151412) , < 2021.0.5 LTS (custom) Affected: AXC F 2152 (2404267) , < 2021.0.5 LTS (custom) Affected: AXC F 3152 (1069208) , < 2021.0.5 LTS (custom) Affected: AXC F 2152 Starterkit (1046568) , < 2021.0.5 LTS (custom)	guessed
Phoenix Contact	RFC	Affected: RFC 4072S (1051328) , < 2021.0.5 LTS (custom)	guessed
Phoenix Contact	PLCnext	Affected: PLCnext Technology Starterkit (1188165) , < 2021.0.5 LTS (custom)	guessed

Date Public

2021-08-03 00:00

Credits

The vulnerability was discovered by Oliver Carrigan of Dionach. We kindly appreciate the coordinated disclosure of these vulnerabilities by the finder. PHOENIX CONTACT thanks CERT@VDE for the coordination and support with this publication.

Show details on NVD website

JSON

To clipboard

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}

FKIE_CVE-2021-34570

Vulnerability from fkie_nvd - Published: 2021-09-27 09:15 - Updated: 2026-06-17 03:56

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.

References

	URL	Tags
	info@cert.vde.com	https://cert.vde.com/en/advisories/VDE-2021-029/	Patch, Third Party Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://cert.vde.com/en/advisories/VDE-2021-029/	Patch, Third Party Advisory

Impacted products

Vendor	Product	Version
phoenixcontact	plcnext_technology_starterkit_firmware	*
phoenixcontact	plcnext_technology_starterkit	-
phoenixcontact	axc_f_2152_starterkit_firmware	*
phoenixcontact	axc_f_2152_starterkit	-
phoenixcontact	rfc_4072s_firmware	*
phoenixcontact	rfc_4072s	-
phoenixcontact	axc_f_3152_firmware	*
phoenixcontact	axc_f_3152	-
phoenixcontact	axc_f_1152_firmware	*
phoenixcontact	axc_f_1152	-
phoenixcontact	axc_f_2152_firmware	*
phoenixcontact	axc_f_2152	-

JSON

To clipboard

{
  "affected": [
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      "affectedData": [
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          "product": "AXC F",
          "vendor": "Phoenix Contact",
          "versions": [
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              "version": "AXC F 1152 (1151412)",
              "versionType": "custom"
            },
            {
              "lessThan": "2021.0.5 LTS",
              "status": "affected",
              "version": "AXC F 2152 (2404267)",
              "versionType": "custom"
            },
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GHSA-5JGP-38VJ-293V

Vulnerability from github – Published: 2022-05-24 19:15 – Updated: 2022-05-24 19:15

Details

Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

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    "github_reviewed": false,
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  },
  "details": "Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.",
  "id": "GHSA-5jgp-38vj-293v",
  "modified": "2022-05-24T19:15:54Z",
  "published": "2022-05-24T19:15:54Z",
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    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34570"
    },
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      "type": "CVSS_V3"
    }
  ]
}

GSD-2021-34570

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.

Aliases

CVE-2021-34570

Aliases

CVE-2021-34570

JSON

To clipboard

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          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 7.8,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-07-28T10:40Z",
      "publishedDate": "2021-09-27T09:15Z"
    }
  }
}

VDE-2021-029

Vulnerability from csaf_phoenixcontactgmbhcokg - Published: 2021-08-04 07:58 - Updated: 2025-05-14 12:28

Summary

PHOENIX CONTACT: DoS for PLCnext Control devices in versions <2021.0.5 LTS

Scope

1 vulnerability in this advisory, including CVE-2021-34570.

CVE-2021-34570

7.5 (High)


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

Known affected: 6 products Fixed: 6 products

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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.

Vulnerability timeline

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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.

Action not permitted

CVE-2021-34570 (GCVE-0-2021-34570)

FKIE_CVE-2021-34570

GHSA-5JGP-38VJ-293V

GSD-2021-34570

VDE-2021-029

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