Vulnerability Details : 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 LMP packet. The user needs to manually reboot the device to restore communication.
Products affected by CVE-2021-31611
- cpe:2.3:o:zh-jieli:ac6901_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:zh-jieli:ac6925_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:zh-jieli:ac6926_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:zh-jieli:ac6928_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:zh-jieli:ac6921_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31611
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 32 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-31611
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.3
|
LOW | AV:A/AC:L/Au:N/C:N/I:N/A:P |
6.5
|
2.9
|
NIST | |
|
5.7
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
2.1
|
3.6
|
NIST |
CWE ids for CVE-2021-31611
-
The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-31611
-
http://www.zh-jieli.com/product/68-cn.html
杰理蓝牙系列芯片AC690N/AC692N-珠海市杰理科技股份有限公司Vendor Advisory
-
https://launchstudio.bluetooth.com/ListingDetails/58628
Launch Studio - Listing DetailsThird Party Advisory
-
https://launchstudio.bluetooth.com/ListingDetails/19746
Launch Studio - Listing DetailsThird Party Advisory
-
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
Broken Link
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