CVE-2020-10134 Bluetooth devices supporting LE and specific BR/EDR implementations are vulnerable to method confusion attacks

2020-05-1800:00:00

CWE-351

certcc

www.cve.org

6.3 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

6.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

21.8%

JSON

Pairing in Bluetooth® Core v5.2 and earlier may permit an unauthenticated attacker to acquire credentials with two pairing devices via adjacent access when the unauthenticated user initiates different pairing methods in each peer device and an end-user erroneously completes both pairing procedures with the MITM using the confirmation number of one peer as the passkey of the other. An adjacent, unauthenticated attacker could be able to initiate any Bluetooth operation on either attacked device exposed by the enabled Bluetooth profiles. This exposure may be limited when the user must authorize certain access explicitly, but so long as a user assumes that it is the intended remote device requesting permissions, device-local protections may be weakened.

CNA Affected

[
  {
    "product": "LE",
    "vendor": "Bluetooth",
    "versions": [
      {
        "lessThanOrEqual": "5.2",
        "status": "affected",
        "version": "5.2",
        "versionType": "custom"
      }
    ]
  }
]