{
  "id": "CVE-2021-31250",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-06-04T21:15:07.490",
  "lastModified": "2021-06-08T18:39:05.697",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple storage XSS vulnerabilities were discovered on BF-430, BF-431 and BF-450M TCP/IP Converter devices from CHIYU Technology Inc due to a lack of sanitization of the input on the components man.cgi, if.cgi, dhcpc.cgi, ppp.cgi."
    },
    {
      "lang": "es",
      "value": "Se detectaron m\u00faltiples vulnerabilidades de tipo XSS de almacenamiento en los dispositivos convertidores TCP/IP BF-430, BF-431 y BF-450M de CHIYU Technology Inc, debido a una falta de saneamiento de la entrada en los componentes man.cgi, if.cgi, dhcpc.cgi, ppp.cgi"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 2.7
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "SINGLE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE",
          "baseScore": 3.5
        },
        "baseSeverity": "LOW",
        "exploitabilityScore": 6.8,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "configurations": [
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:chiyu-tech:bf-430_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "FA0C36F7-25D5-4A51-B312-C924362A8A29"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:chiyu-tech:bf-430:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "E4E3D910-0317-4B0B-BB33-15B86AB3E4EB"
            }
          ]
        }
      ]
    },
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:chiyu-tech:bf-431_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "C137757C-105F-400D-93F3-4620975011B2"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:chiyu-tech:bf-431:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "23BF3F3D-7752-492B-87E9-949AFA19F85A"
            }
          ]
        }
      ]
    },
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:chiyu-tech:bf-450m_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "B5039F6C-F563-4944-A977-0D79BC6E2B17"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:chiyu-tech:bf-450m:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "CD504C8D-7E80-48EF-B3F6-93FC6AEE031E"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31250",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.chiyu-tech.com/msg/message-Firmware-update-87.htm",
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}