CVE-2021-37577 Security feature bypass in n/a
Man-in-the-middle attackers can bypass Bluetooth pairing authentication to complete secure connections using the correct passkey.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-37577?
CVE-2021-37577 is a medium-severity vulnerability in n/a, published on 1 Oct 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-639
Which versions are affected by CVE-2021-37577?
How do I fix CVE-2021-37577?
No fix has been published for CVE-2021-37577 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-37577 being exploited?
There is no known exploitation of CVE-2021-37577 in the wild and no public exploit code.
Sources
Also known as GHSA-f7h9-hrg7-94fg, UBUNTU-CVE-2021-37577.