CVE-2021-31611 Denial of service in n/a
Attackers in radio range can deadlock Bluetooth devices by sending malformed LMP packets, requiring a manual reboot to restore functionality.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-31611?
CVE-2021-31611 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, and only if a user opens a file or follows a link.
Official description
The Bluetooth Classic implementation on Zhuhai Jieli AC690X and AC692X devices does not properly handle an out-of-order LMP Setup procedure that is followed by a malformed LMP packet, allowing attackers in radio range to deadlock a device via a crafted LMP packet. The user needs to manually reboot the device to restore communication.
Weakness: CWE-667
Which versions are affected by CVE-2021-31611?
It affects 5 products.
Products include Zh-Jieli Ac6901 Firmware, Zh-Jieli Ac6921 Firmware, Zh-Jieli Ac6925 Firmware, Zh-Jieli Ac6926 Firmware, Zh-Jieli Ac6928 Firmware.
How do I fix CVE-2021-31611?
No fix has been published for CVE-2021-31611 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-2021-31611 being exploited?
There is no known exploitation of CVE-2021-31611 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-grq2-2v86-6ppx.