CVEvulnerability
CVE-2021-28135
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 Espressif ESP-IDF 4.4 and earlier does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service (crash) in ESP32 by flooding the target device with LMP Feature Response data.
Affected configurations
• espressif esp-idf (<= 4.4)
References
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdf Broken Link
- https://github.com/espressif/esp-idf Third Party Advisory
- https://github.com/espressif/esp32-bt-lib Third Party Advisory
- https://www.espressif.com/en/products/socs/esp32 Product
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdf Broken Link
- https://github.com/espressif/esp-idf Third Party Advisory
- https://github.com/espressif/esp32-bt-lib Third Party Advisory
- https://www.espressif.com/en/products/socs/esp32 Product