CVE-2021-33155 Denial of service in Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products
An authenticated attacker with adjacent access can cause a denial of service in Intel and Killer Bluetooth firmware due to improper input validation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-33155?
CVE-2021-33155 is a medium-severity denial of service vulnerability in Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products, published on 9 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper input validation in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products before version 22.100 may allow an authenticated user to potentially enable denial of service via adjacent access.
Weakness: CWE-20
Which versions are affected by CVE-2021-33155?
It affects 16 products.
Products include Intel Ac3168 Firmware, Intel Ac 1550 Firmware, Intel Ac 3165 Firmware, Intel Ac 7265 Firmware, Intel Ac 8260 Firmware, Intel Ac 8265 Firmware and 10 more.
How do I fix CVE-2021-33155?
Upgrade to a fixed version.
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-2021-33155 being exploited?
There is no known exploitation of CVE-2021-33155 in the wild and no public exploit code.
Other vulnerabilities in Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products
Sources
Also known as GHSA-c4v5-f23r-548x, UBUNTU-CVE-2021-33155.