{
  "id": "CVE-2021-38547",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-08-11T16:15:07.350",
  "lastModified": "2024-11-21T06:17:24.667",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Logitech Z120 and S120 speakers through 2021-08-09 allow remote attackers to recover speech signals from an LED on the device, via a telescope and an electro-optical sensor, aka a \"Glowworm\" attack. The power indicator LED of the speakers is connected directly to the power line, as a result, the intensity of a device's power indicator LED is correlative to the power consumption. The sound played by the speakers affects their power consumption and as a result is also correlative to the light intensity of the LEDs. By analyzing measurements obtained from an electro-optical sensor directed at the power indicator LEDs of the speakers, we can recover the sound played by them."
    },
    {
      "lang": "es",
      "value": "Los altavoces Logitech Z120 y S120 hasta el 09-08-2021, permiten a atacantes remotos recuperar las se\u00f1ales de voz de un LED del dispositivo, por medio de un telescopio y un sensor electro-\u00f3ptico, tambi\u00e9n se conoce como un ataque \"Glowworm\". El LED indicador de potencia de los altavoces est\u00e1 conectado directamente a la l\u00ednea el\u00e9ctrica, por lo que la intensidad del LED indicador de potencia de un dispositivo es correlativa al consumo de energ\u00eda. El sonido reproducido por los altavoces afecta a su consumo de energ\u00eda y, en consecuencia, tambi\u00e9n es correlativo a la intensidad luminosa de los LED. Al analizar las medidas obtenidas por un sensor electro-\u00f3ptico dirigido a los LEDs indicadores de potencia de los altavoces, podemos recuperar el sonido reproducido por los mismos"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "configurations": [
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:logitech:z120_firmware:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "2021-08-09",
              "matchCriteriaId": "ECA6FDD8-ADA8-40A0-9B58-81982AE7D57F"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:logitech:z120:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "263A9BD4-5F9D-45ED-AF2B-7530BBA8466B"
            }
          ]
        }
      ]
    },
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:logitech:s120_firmware:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "2021-08-09",
              "matchCriteriaId": "4CBC80F0-8805-413B-B321-465CA916C47B"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:logitech:s120:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "0C70F72D-B8CE-4817-8E82-7BFFDBD69814"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.nassiben.com/glowworm-attack",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.nassiben.com/glowworm-attack",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}