Bluetooth Core Specifications up to 5.3 Bluetooth LE/BR/EDR channel accessible

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Bluetooth Core Specifications up to 5.3. This affects an unknown function of the component Bluetooth LE/BR/EDR. Performing a manipulation results in channel accessible. This vulnerability is cataloged as CVE-2021-37577. There is no exploit available.

Detailsinfo

A vulnerability was found in Bluetooth Core Specifications up to 5.3. It has been classified as problematic. This affects an unknown functionality of the component Bluetooth LE/BR/EDR. The manipulation with an unknown input leads to a channel accessible vulnerability. CWE is classifying the issue as CWE-300. The product does not adequately verify the identity of actors at both ends of a communication channel, or does not adequately ensure the integrity of the channel, in a way that allows the channel to be accessed or influenced by an actor that is not an endpoint. This is going to have an impact on confidentiality. The summary by CVE is:

Bluetooth LE and BR/EDR Secure Connections pairing and Secure Simple Pairing using the Passkey entry protocol in Bluetooth Core Specifications 2.1 through 5.3 may permit an unauthenticated man-in-the-middle attacker to identify the Passkey used during pairing by reflection of a crafted public key with the same X coordinate as the offered public key and by reflection of the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. This is a related issue to CVE-2020-26558.

This vulnerability is uniquely identified as CVE-2021-37577 since 07/26/2021. The exploitability is told to be difficult. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1557 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 260190 (Linux Distros Unpatched Vulnerability : CVE-2021-37577), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (260190). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• Bluetooth Core Specifications

Version

• 5.0
• 5.1
• 5.2
• 5.3

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion