CVE-2021-34144 Denial of service in n/a
Attackers can disable Bluetooth connectivity on devices using the Zhuhai Jieli AC6366C SDK by sending crafted packets, requiring a manual restart to restore service.
- 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-2021-34144?
CVE-2021-34144 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 BT SDK through 0.9.1 does not properly handle the reception of truncated LMP_SCO_Link_Request packets while no other BT connections are active, allowing attackers in radio range to prevent new BT connections (disabling the AB5301A inquiry and page scan procedures) via a crafted LMP packet. The user needs to manually perform a power cycle (restart) of the device to restore BT connectivity.
Which versions are affected by CVE-2021-34144?
It affects 1 product.
Products include Zh-Jieli Fw-Ac63 Bt Sdk.
How do I fix CVE-2021-34144?
No fix has been published for CVE-2021-34144 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-2021-34144 being exploited?
There is no known exploitation of CVE-2021-34144 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-3646-mf8v-hr3c.