What is CVE-2021-31615?

CVE-2021-31615 is a vulnerability in Bluetooth Core Specifications 4.0 through 5.2 that allows an adjacent device to inject a crafted packet during the receive window to achieve full MITM status.

What is the severity of CVE-2021-31615?

CVE-2021-31615 has a severity level of 5.3, which is classified as medium.

Which software versions are affected by CVE-2021-31615?

Bluetooth Core Specifications versions 4.0 through 5.2 are affected by CVE-2021-31615.

How can an adjacent device exploit CVE-2021-31615?

An adjacent device can exploit CVE-2021-31615 by injecting a crafted packet during the receive window of the listening device.

Are there any references to learn more about CVE-2021-31615?

For more information on CVE-2021-31615, you can visit the Bluetooth official website or the Bluetooth Security page on the Bluetooth website.

Vulnerability/
CVE-2021-31615

medium

5.3

CWE

362

25/6/2021

3/8/2024

CVE-2021-31615: Race Condition

First published: Fri Jun 25 2021(Updated: )

Unencrypted Bluetooth Low Energy baseband links in Bluetooth Core Specifications 4.0 through 5.2 may permit an adjacent device to inject a crafted packet during the receive window of the listening device before the transmitting device initiates its packet transmission to achieve full MITM status without terminating the link. When applied against devices establishing or using encrypted links, crafted packets may be used to terminate an existing link, but will not compromise the confidentiality or integrity of the link.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Bluetooth Bluetooth Core Specification	>=4.0<=5.2

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Frequently Asked Questions

What is CVE-2021-31615?
CVE-2021-31615 is a vulnerability in Bluetooth Core Specifications 4.0 through 5.2 that allows an adjacent device to inject a crafted packet during the receive window to achieve full MITM status.
What is the severity of CVE-2021-31615?
CVE-2021-31615 has a severity level of 5.3, which is classified as medium.
Which software versions are affected by CVE-2021-31615?
Bluetooth Core Specifications versions 4.0 through 5.2 are affected by CVE-2021-31615.
How can an adjacent device exploit CVE-2021-31615?
An adjacent device can exploit CVE-2021-31615 by injecting a crafted packet during the receive window of the listening device.
Are there any references to learn more about CVE-2021-31615?
For more information on CVE-2021-31615, you can visit the Bluetooth official website or the Bluetooth Security page on the Bluetooth website.

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agent/weakness
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agent/author
agent/type
agent/event
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agent/softwarecombine
agent/first-publish-date
agent/last-modified-date
agent/tags
collector/mitre-cve
source/MITRE
vendor/bluetooth
canonical/bluetooth bluetooth core specification
version/bluetooth bluetooth core specification/4.0
version/bluetooth bluetooth core specification/5.2

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