Vulnerability · Published Sep 7, 2021 · Assigned by mitre

CVE-2021-31785

Medium 6.5

In plain English

A medium-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).

Severity (CVSS NVD)6.5Medium

Exploit odds (30 days)0.4%top 61.0% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

The Bluetooth Classic implementation on Actions ATS2815 and ATS2819 chipsets does not properly handle the reception of multiple LMP_host_connection_req packets, allowing attackers in radio range to trigger a denial of service (deadlock) of the device via crafted LMP packets. Manual user intervention is required to restart the device and restore Bluetooth communication.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://www.actions-semi.com/index.php?id=3581&siteId=4 x_refsource_MISC
https://launchstudio.bluetooth.com/ListingDetails/76427 x_refsource_MISC
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf x_refsource_MISC