FKIE_CVE-2021-31610

Vulnerability from fkie_nvd - Published: 2021-09-07 07:15 - Updated: 2026-06-17 03:52
Severity
6.5 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
The Bluetooth Classic implementation on AB32VG1 devices does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service (either restart or deadlock the device) by flooding a device with LMP_AU_rand data.
References
cve@mitre.orghttp://www.bluetrum.com/product/ab5376t.htmlProduct, Vendor Advisory
cve@mitre.orghttp://www.bluetrum.com/product/bt8896a.htmlProduct, Vendor Advisory
cve@mitre.orghttps://dl.packetstormsecurity.net/papers/general/braktooth.pdfBroken Link
cve@mitre.orghttps://www.mi.com/global/mi-true-wireless-earbuds-basic-2/Not Applicable
af854a3a-2127-422b-91ae-364da2661108http://www.bluetrum.com/product/ab5376t.htmlProduct, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.bluetrum.com/product/bt8896a.htmlProduct, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://dl.packetstormsecurity.net/papers/general/braktooth.pdfBroken Link
af854a3a-2127-422b-91ae-364da2661108https://www.mi.com/global/mi-true-wireless-earbuds-basic-2/Not Applicable
Impacted products
Vendor Product Version
mi mi_true_wireless_earbuds_basic_2_firmware -
mi mi_true_wireless_earbuds_basic_2 -
bluetrum ab5376t_firmware -
bluetrum ab5376t -
bluetrum bt8896a_firmware -
bluetrum bt8896a -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:mi:mi_true_wireless_earbuds_basic_2_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "2272E572-C4D7-4BA0-9A77-14B9D071121D",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:mi:mi_true_wireless_earbuds_basic_2:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "CEA8DDB5-A27E-439D-ACD9-36E547E7B4A2",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:bluetrum:ab5376t_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "F9246326-6F6B-4178-BE55-9EDB59A2BB06",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:bluetrum:ab5376t:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "9C3017AC-5C3D-497A-919F-7FC0131046F0",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:bluetrum:bt8896a_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "43C77BBB-E11D-4A12-AFFC-7480C0A40C43",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:bluetrum:bt8896a:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "45F9BE6A-33E3-4006-A897-961C6B6002BF",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Bluetooth Classic implementation on AB32VG1 devices does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service (either restart or deadlock the device) by flooding a device with LMP_AU_rand data."
    },
    {
      "lang": "es",
      "value": "La implementaci\u00f3n de Bluetooth Classic en los dispositivos AB32VG1, no maneja apropiadamente la recepci\u00f3n de respuestas LMP continuas no solicitadas, que permite a atacantes en el rango de radio desencadenar una denegaci\u00f3n de servicio (reiniciar o bloquear el dispositivo) inundando un dispositivo con datos LMP_AU_rand"
    }
  ],
  "id": "CVE-2021-31610",
  "lastModified": "2026-06-17T03:52:04.603",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "ADJACENT_NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 6.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 6.5,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-09-07T07:15:06.990",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Product",
        "Vendor Advisory"
      ],
      "url": "http://www.bluetrum.com/product/ab5376t.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Product",
        "Vendor Advisory"
      ],
      "url": "http://www.bluetrum.com/product/bt8896a.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Broken Link"
      ],
      "url": "https://dl.packetstormsecurity.net/papers/general/braktooth.pdf"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Not Applicable"
      ],
      "url": "https://www.mi.com/global/mi-true-wireless-earbuds-basic-2/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Product",
        "Vendor Advisory"
      ],
      "url": "http://www.bluetrum.com/product/ab5376t.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Product",
        "Vendor Advisory"
      ],
      "url": "http://www.bluetrum.com/product/bt8896a.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link"
      ],
      "url": "https://dl.packetstormsecurity.net/papers/general/braktooth.pdf"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Not Applicable"
      ],
      "url": "https://www.mi.com/global/mi-true-wireless-earbuds-basic-2/"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.