CVE-2021-34143 Denial of service in n/a
Attackers in radio range can cause a deadlock in Zhuhai Jieli Bluetooth devices by flooding them with specific LMP packets, requiring manual restart.
- 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-2021-34143?
CVE-2021-34143 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 in the Zhuhai Jieli AC6366C_DEMO_V1.0 does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service (deadlock) of the device by flooding it with LMP_AU_Rand packets after paging procedure. User intervention is required to restart the device.
Which versions are affected by CVE-2021-34143?
It affects 1 product.
Products include Zh-Jieli Fw-Ac63 Bt Sdk.
How do I fix CVE-2021-34143?
No fix has been published for CVE-2021-34143 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-2021-34143 being exploited?
There is no known exploitation of CVE-2021-34143 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-gpvc-2qwg-r73m.