A vulnerability classified as critical has been found in Bluetooth Core up to 5.2. This affects an unknown function of the component Pairing Handler. The manipulation with an unknown input leads to a type distinction vulnerability. CWE is classifying the issue as CWE-351. The product does not properly distinguish between different types of elements in a way that leads to insecure behavior. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was released 05/19/2020 as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. This vulnerability is uniquely identified as CVE-2020-10134 since 03/05/2020. The exploitability is told to be difficult. The attack needs to approached within the local network. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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• Bluetooth Core

Version

• 5.0
• 5.1
• 5.2

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CPE 2.2info

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