{
  "id": "CVE-2021-31227",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-08-19T11:15:07.620",
  "lastModified": "2021-08-26T16:44:05.617",
  "vulnStatus": "Analyzed",
  "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 an incorrect signed integer comparison. This vulnerability requires the attacker to send a malformed HTTP packet with a negative Content-Length, which bypasses the size checks and results in a large heap overflow in the wbs_multidata buffer copy."
    },
    {
      "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 comparaci\u00f3n incorrecta de enteros con signo. Esta vulnerabilidad requiere que el atacante env\u00ede un paquete HTTP malformado con un Content-Length negativo, que omita las comprobaciones de tama\u00f1o y resulte en un gran desbordamiento de la pila en la copia del buffer wbs_multidata."
    }
  ],
  "metrics": {
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        "type": "Primary",
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          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
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          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
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  ],
  "configurations": [
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      "nodes": [
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          "operator": "OR",
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          "cpeMatch": [
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  "references": [
    {
      "url": "https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/",
      "source": "cve@mitre.org",
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      "url": "https://www.kb.cert.org/vuls/id/608209",
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}