Vulnerability-Lookup

FKIE_CVE-2021-31226

Vulnerability from fkie_nvd - Published: 2021-08-19 11:15 - Updated: 2026-06-17 03:51

Severity

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

Summary

An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to lack of size validation. This vulnerability requires the attacker to send a crafted HTTP POST request with a URI longer than 50 bytes. This leads to a heap overflow in wbs_post() via an strcpy() call.

References

URL	Tags
cve@mitre.org	https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/	Mitigation, Third Party Advisory
cve@mitre.org	https://www.kb.cert.org/vuls/id/608209	Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108	https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/	Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.kb.cert.org/vuls/id/608209	Third Party Advisory, US Government Resource

Impacted products

	Vendor	Product	Version
	hcc-embedded	interniche	4.0.1

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:hcc-embedded:interniche:4.0.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "30C4D75D-BA85-4C30-BB57-D0F9E8D56688",
              "vulnerable": true
            }
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to lack of size validation. This vulnerability requires the attacker to send a crafted HTTP POST request with a URI longer than 50 bytes. This leads to a heap overflow in wbs_post() via an strcpy() call."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en HCC embedded InterNiche versi\u00f3n 4.0.1. Se presenta un potencial desbordamiento del b\u00fafer de la pila en el c\u00f3digo que analiza la petici\u00f3n HTTP POST, debido a una falta de comprobaci\u00f3n del tama\u00f1o. Esta vulnerabilidad requiere que el atacante env\u00ede una petici\u00f3n HTTP POST dise\u00f1ada con un URI de m\u00e1s de 50 bytes. Esto conlleva a un desbordamiento de pila en la funci\u00f3n wbs_post() por medio de una llamada a la funci\u00f3n strcpy()."
    }
  ],
  "id": "CVE-2021-31226",
  "lastModified": "2026-06-17T03:51:28.837",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-08-19T11:15:07.563",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://www.kb.cert.org/vuls/id/608209"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://www.kb.cert.org/vuls/id/608209"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-31226 (GCVE-0-2021-31226)

Vulnerability from cvelistv5 – Published: 2021-08-19 10:48 – Updated: 2024-08-03 22:55

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2334 records in the last 180 days details

References

2 references

URL	Tags
https://www.forescout.com/blog/new-critical-opera…	x_refsource_MISC
https://www.kb.cert.org/vuls/id/608209	third-party-advisoryx_refsource_CERT-VN

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-03T22:55:53.172Z",
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        }
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      "problemTypes": [
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          "url": "https://www.kb.cert.org/vuls/id/608209"
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      ],
      "x_legacyV4Record": {
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          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-31226",
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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

Sightings and recorded dates, grouped by day · UTC

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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.

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