CVEvulnerability
CVE-2021-34144
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-09-07
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 3.3 LOW — AV:A/AC:L/Au:N/C:N/I:N/A:P
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.
Affected configurations
• zh-jieli fw-ac63 bt sdk (<= 0.9.1)
References
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdf Technical Description, Third Party Advisory
- https://github.com/Jieli-Tech/fw-AC63_BT_SDK Third Party Advisory
- https://launchstudio.bluetooth.com/ListingDetails/91371 Third Party Advisory
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdf Technical Description, Third Party Advisory
- https://github.com/Jieli-Tech/fw-AC63_BT_SDK Third Party Advisory
- https://launchstudio.bluetooth.com/ListingDetails/91371 Third Party Advisory