{
  "id": "CVE-2021-27941",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-05-06T21:15:07.597",
  "lastModified": "2022-07-12T17:42:04.277",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Unconstrained Web access to the device's private encryption key in the QR code pairing mode in the eWeLink mobile application (through 4.9.2 on Android and through 4.9.1 on iOS) allows a physically proximate attacker to eavesdrop on Wi-Fi credentials and other sensitive information by monitoring the Wi-Fi spectrum during a device pairing process."
    },
    {
      "lang": "es",
      "value": "El acceso web sin restricciones a la clave de cifrado privada del dispositivo en el modo de emparejamiento de c\u00f3digo QR en la aplicaci\u00f3n m\u00f3vil eWeLink (versiones  hasta.9.2 en Android y versiones hasta.9.1 en iOS) permite a un atacante f\u00edsicamente pr\u00f3ximo espiar las credenciales de Wi-Fi y otras informaci\u00f3n mediante el seguimiento del espectro de Wi-Fi durante un proceso de emparejamiento de dispositivos"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "attackVector": "PHYSICAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.6,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 0.9,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "accessVector": "LOCAL",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.1
        },
        "baseSeverity": "LOW",
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-522"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:coolkit:ewelink:*:*:*:*:*:iphone_os:*:*",
              "versionEndIncluding": "4.9.1",
              "matchCriteriaId": "3C19C39C-9C55-4C57-8BF2-C32E843249E5"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:coolkit:ewelink:*:*:*:*:*:android:*:*",
              "versionEndIncluding": "4.9.2",
              "matchCriteriaId": "6198F9C4-23C8-46B3-9100-B96C60407F1C"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://apps.apple.com/us/app/ewelink-smart-home/id1035163158",
      "source": "cve@mitre.org",
      "tags": [
        "Product",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/salgio/eWeLink-QR-Code",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://play.google.com/store/apps/details?id=com.coolkit&hl=en_US",
      "source": "cve@mitre.org",
      "tags": [
        "Product",
        "Third Party Advisory"
      ]
    }
  ]
}