Vulnerability Details : CVE-2021-31787
The Bluetooth Classic implementation on Actions ATS2815 chipsets does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service and shutdown of a device by flooding the target device with LMP_features_res packets.
Vulnerability category: Denial of service
Products affected by CVE-2021-31787
- cpe:2.3:o:actions-semi:ats2819p_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:actions-semi:ats2815_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:actions-semi:ats2819_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:actions-semi:ats2819s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:actions-semi:ats2819t_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31787
0.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 30 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-31787
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.1
|
MEDIUM | AV:A/AC:L/Au:N/C:N/I:N/A:C |
6.5
|
6.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2021-31787
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-31787
-
https://launchstudio.bluetooth.com/ListingDetails/76427
Launch Studio - Listing DetailsThird Party Advisory
-
https://www.actions-semi.com/index.php?id=3581&siteId=4
Vendor Advisory
-
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
Broken Link
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