CVE-2021-31786 Denial of service in n/a
Attackers can cause device deadlock and disconnection by forging a Bluetooth address matching the current host, affecting Actions ATS2815/2819 audio devices.
- 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-2021-31786?
CVE-2021-31786 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 Audio implementation on Actions ATS2815 and ATS2819 devices does not properly handle a connection attempt from a host with the same BDAddress as the current connected BT host, allowing attackers to trigger a disconnection and deadlock of the device by connecting with a forged BDAddress that matches the original connected host.
Weakness: CWE-667
Which versions are affected by CVE-2021-31786?
It affects 5 products.
Products include Actions-Semi Ats2815 Firmware, Actions-Semi Ats2819 Firmware, Actions-Semi Ats2819p Firmware, Actions-Semi Ats2819s Firmware, Actions-Semi Ats2819t Firmware.
How do I fix CVE-2021-31786?
No fix has been published for CVE-2021-31786 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-2021-31786 being exploited?
There is no known exploitation of CVE-2021-31786 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-g4j2-r5x5-83p7.