CVE-2020-24490 Denial of service in BlueZ Advisory
An unauthenticated attacker with adjacent access can cause a denial of service in the BlueZ Bluetooth stack due to improper buffer restrictions.
- 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-2020-24490?
CVE-2020-24490 is a medium-severity denial of service vulnerability in BlueZ Advisory, published on 2 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper buffer restrictions in BlueZ may allow an unauthenticated user to potentially enable denial of service via adjacent access. This affects all Linux kernel versions that support BlueZ.
Which versions are affected by CVE-2020-24490?
It affects 1 product.
Products include Bluez Bluez.
How do I fix CVE-2020-24490?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-24490 being exploited?
There is no known exploitation of CVE-2020-24490 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in BlueZ Advisory
Sources
Also known as DEBIAN-CVE-2020-24490, MINI-fp3j-hhgw-hqwh, UBUNTU-CVE-2020-24490.