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[email protected]CVE-2021-31785

HistorySep 07, 2021 - 7:15 a.m.

CVE-2021-31785

2021-09-0707:15:00

CWE-667

[email protected]

web.nvd.nist.gov

bluetooth classic

actions ats2815

actions ats2819

denial of service

deadlock

bluetooth communication

6.5 Medium

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.3 Medium

AI Score

Confidence

High

6.1 Medium

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

41.3%

JSON

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.

CPENameOperatorVersion
actions-semi:ats2819p_firmwareactions-semi ats2819p firmwareeq-
actions-semi:ats2815_firmwareactions-semi ats2815 firmwareeq-
actions-semi:ats2819_firmwareactions-semi ats2819 firmwareeq-
actions-semi:ats2819s_firmwareactions-semi ats2819s firmwareeq-
actions-semi:ats2819t_firmwareactions-semi ats2819t firmwareeq-

CPE	Name	Operator	Version
actions-semi:ats2819p_firmware	actions-semi ats2819p firmware	eq	-
actions-semi:ats2815_firmware	actions-semi ats2815 firmware	eq	-
actions-semi:ats2819_firmware	actions-semi ats2819 firmware	eq	-
actions-semi:ats2819s_firmware	actions-semi ats2819s firmware	eq	-
actions-semi:ats2819t_firmware	actions-semi ats2819t firmware	eq	-

References

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

launchstudio.bluetooth.com/ListingDetails/76427

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

6.5 Medium

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.3 Medium

AI Score

Confidence

High

6.1 Medium

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

41.3%

JSON

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