CVE-2021-31611
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…
Does this matter?
Lower severity and a low EPSS score (0.37%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.7 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 0.37% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-667
- Affected
- zh-jieli/ac6901 firmware · zh-jieli/ac6925 firmware · zh-jieli/ac6926 firmware · zh-jieli/ac6928 firmware · zh-jieli/ac6921 firmware
- Source
- cve@mitre.org
References
- http://www.zh-jieli.com/product/68-cn.htmlVendor Advisory
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdfBroken Link
- https://launchstudio.bluetooth.com/ListingDetails/19746Third Party Advisory
- https://launchstudio.bluetooth.com/ListingDetails/58628Third Party Advisory
- http://www.zh-jieli.com/product/68-cn.htmlVendor Advisory
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdfBroken Link
- https://launchstudio.bluetooth.com/ListingDetails/19746Third Party Advisory
- https://launchstudio.bluetooth.com/ListingDetails/58628Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.