CVE-2021-31785

CVSS V2 Medium 6.1 CVSS V3 Medium 6.5
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.
Overview
  • CVE ID
  • CVE-2021-31785
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-09-07T07:15:07
  • Last Modified Date
  • 2022-05-03T16:04:40
Weakness Enumerations
CWE URL
CWE-667 http://cwe.mitre.org/data/definitions/667.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:actions-semi:ats2819p_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:actions-semi:ats2819p:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:actions-semi:ats2815_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:actions-semi:ats2815:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:actions-semi:ats2819_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:actions-semi:ats2819:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:actions-semi:ats2819s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:actions-semi:ats2819s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:actions-semi:ats2819t_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:actions-semi:ats2819t:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:A/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • ADJACENT_NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 6.1
  • Severity
  • MEDIUM
  • Exploitability Score
  • 6.5
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • ADJACENT_NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 6.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf Technical Description Third Party Advisory
https://www.actions-semi.com/index.php?id=3581&siteId=4 Broken Link Vendor Advisory
https://launchstudio.bluetooth.com/ListingDetails/76427 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-31785
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31785
History
Created Old Value New Value Data Type Notes
2022-05-08 06:19:45 Added to TrackCVE
2022-12-05 09:41:51 2021-09-07T07:15Z 2021-09-07T07:15:07 CVE Published Date updated
2022-12-05 09:41:51 2022-05-03T16:04:40 CVE Modified Date updated
2022-12-05 09:41:51 Analyzed Vulnerability Status updated