CVE-2021-31785

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.

Related CPE's

oactions-semiats2819p_firmware-*******

vulnerable

hactions-semiats2819p-*******

oactions-semiats2815_firmware-*******

vulnerable

hactions-semiats2815-*******

oactions-semiats2819_firmware-*******

vulnerable

hactions-semiats2819-*******

oactions-semiats2819s_firmware-*******

vulnerable

hactions-semiats2819s-*******

oactions-semiats2819t_firmware-*******

vulnerable

hactions-semiats2819t-*******

References

https://dl.packetstormsecurity.net/papers/general/braktooth.pdf

Technical DescriptionThird Party Advisory

https://www.actions-semi.com/index.php?id=3581&siteId=4

Broken LinkVendor Advisory

https://launchstudio.bluetooth.com/ListingDetails/76427

Third Party Advisory

CvssV3 impact

BaseSeverity

MEDIUM

ConfidentialityImpact

NONE

AttackComplexity

LOW

Scope

UNCHANGED

AttackVector

ADJACENT_NETWORK

AvailabilityImpact

HIGH

IntegrityImpact

NONE

PrivilegesRequired

NONE

BaseScore

6.5

VectorString

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Version

3.1

UserInteraction

NONE

CvssV2 impact

AccessComplexity

LOW

ConfidentialityImpact

NONE

AvailabilityImpact

COMPLETE

IntegrityImpact

NONE

BaseScore

6.1

VectorString

AV:A/AC:L/Au:N/C:N/I:N/A:C

Version

2.0

AccessVector

ADJACENT_NETWORK

Authentication

NONE

Created by Yello
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