{
  "id": "CVE-2021-27707",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-04-14T15:15:14.440",
  "lastModified": "2021-04-20T21:43:18.270",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/\"portMappingIndex \"request. This occurs because the \"formDelPortMapping\" function directly passes the parameter \"portMappingIndex\" to strcpy without limit."
    },
    {
      "lang": "es",
      "value": "Un desbordamiento de b\u00fafer en los enrutadores Tenda versiones G1 y G3 con firmware v15.11.0.17(9502) _CN, permite a atacantes remotos ejecutar c\u00f3digo arbitrario por medio de una petici\u00f3n dise\u00f1ada action/\"portMappingIndex\". Esto ocurre porque la funci\u00f3n \"formDelPortMapping\" pasa directamente el par\u00e1metro \"portMappingIndex\" a strcpy sin l\u00edmite"
    }
  ],
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        "type": "Primary",
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          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
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        "type": "Primary",
        "cvssData": {
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          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    }
  ],
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  "references": [
    {
      "url": "https://hackmd.io/U7OVgYIuRcOKV7SW5-euHw",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}