CVE-2021-31611

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.

Category

5.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory zh-jieli.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.zh-jieli.com/product/68-cn.html vendor advisory
https://launchstudio.bluetooth.com/ListingDetails/58628 third party advisory
https://launchstudio.bluetooth.com/ListingDetails/19746 third party advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf broken link

Frequently Asked Questions

What is the severity of CVE-2021-31611?
CVE-2021-31611 has been scored as a medium severity vulnerability.
How to fix CVE-2021-31611?
To fix CVE-2021-31611, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-31611 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-31611 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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