CVE-2021-34149 Denial of service in n/a
Attackers in radio range can cause a deadlock and denial of service on Texas Instruments Bluetooth chips by flooding them with specific LMP packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-34149?
CVE-2021-34149 is a medium-severity denial of service vulnerability in n/a, published on 7 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The Bluetooth Classic implementation on the Texas Instruments CC256XCQFN-EM does not properly handle the reception of continuous LMP_AU_Rand packets, allowing attackers in radio range to trigger a denial of service (deadlock) of the device by flooding it with LMP_AU_Rand packets after the paging procedure.
Which versions are affected by CVE-2021-34149?
It affects 1 product.
Products include Ti Cc256xcqfn-Em Firmware.
How do I fix CVE-2021-34149?
No fix has been published for CVE-2021-34149 yet. Limit exposure of the affected software until one is available.
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-2021-34149 being exploited?
There is no known exploitation of CVE-2021-34149 in the wild and no public exploit code.
Sources
Also known as GHSA-3fq3-m842-mpf8.