Texas Instruments SIMPLELINK-CC2640R2-SDK up to 2.2.3 Bluetooth Low Energy authorization

Summaryinfo

A vulnerability classified as critical was found in Texas Instruments SIMPLELINK-CC2640R2-SDK up to 2.2.3. Affected by this vulnerability is an unknown functionality of the component Bluetooth Low Energy. Executing a manipulation can lead to authorization. This vulnerability appears as CVE-2020-13593. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability was found in Texas Instruments SIMPLELINK-CC2640R2-SDK up to 2.2.3. It has been declared as critical. This vulnerability affects an unknown function of the component Bluetooth Low Energy. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation in Texas Instruments SimpleLink SIMPLELINK-CC2640R2-SDK through 2.2.3 allows the Diffie-Hellman check during the Secure Connection pairing to be skipped if the Link Layer encryption setup is performed earlier. An attacker in radio range can achieve arbitrary read/write access to protected GATT service data, cause a denial of service, or possibly control a device's function by establishing an encrypted session with an unauthenticated Long Term Key (LTK).

The weakness was presented 08/31/2020. This vulnerability was named CVE-2020-13593 since 05/26/2020. The exploitation appears to be difficult. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Texas Instruments

Name

• SIMPLELINK-CC2640R2-SDK

Version

• 2.2.0
• 2.2.1
• 2.2.2
• 2.2.3

CPE 2.3info

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CPE 2.2info

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