CVE-2020-15802 Auth bypass in n/a
Attackers can bypass Bluetooth authentication by overwriting existing bonds with unauthenticated keys, potentially taking over devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-15802?
CVE-2020-15802 is a medium-severity authentication bypass vulnerability in n/a, published on 11 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Devices supporting Bluetooth before 5.1 may allow man-in-the-middle attacks, aka BLURtooth. Cross Transport Key Derivation in Bluetooth Core Specification v4.2 and v5.0 may permit an unauthenticated user to establish a bonding with one transport, either LE or BR/EDR, and replace a bonding already established on the opposing transport, BR/EDR or LE, potentially overwriting an authenticated key with an unauthenticated key, or a key with greater entropy with one with less.
Weakness: CWE-287
Which versions are affected by CVE-2020-15802?
It affects 1 product.
Products include Bluetooth Bluetooth Core Specification.
How do I fix CVE-2020-15802?
Apply the vendor's patch.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2020-15802 being exploited?
There is no known exploitation of CVE-2020-15802 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as A-158854097, ASB-A-158854097, GHSA-2ffq-f4m4-q248, ROOT-OS-UBUNTU-2204-CVE-2020-15802, UBUNTU-CVE-2020-15802.