CVE-2020-26557 Auth bypass in n/a
A nearby attacker can brute-force the Bluetooth Mesh provisioning AuthValue to bypass authentication and join the network.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-26557?
CVE-2020-26557 is a high-severity authentication bypass vulnerability in n/a, published on 24 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device (without possession of the AuthValue used in the provisioning protocol) to determine the AuthValue via a brute-force attack (unless the AuthValue is sufficiently random and changed each time).
Weakness: CWE-287
Which versions are affected by CVE-2020-26557?
It affects 1 product.
Products include Bluetooth Mesh Profile.
How do I fix CVE-2020-26557?
Apply the vendor's patch.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2020-26557 being exploited?
There is no known exploitation of CVE-2020-26557 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-gprg-wq36-vj82, ROOT-OS-UBUNTU-2204-CVE-2020-26557, UBUNTU-CVE-2020-26557.