CVE-2021-31611

CVSS V2 Low 3.3 CVSS V3 Medium 5.7
Description
The Bluetooth Classic implementation on Zhuhai Jieli AC690X and AC692X devices does not properly handle an out-of-order LMP Setup procedure that is followed by a malformed LMP packet, allowing attackers in radio range to deadlock a device via a crafted LMP packet. The user needs to manually reboot the device to restore communication.
Overview
  • CVE ID
  • CVE-2021-31611
  • 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:zh-jieli:ac6901_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zh-jieli:ac6901:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zh-jieli:ac6925_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zh-jieli:ac6925:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zh-jieli:ac6926_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zh-jieli:ac6926:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zh-jieli:ac6928_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zh-jieli:ac6928:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zh-jieli:ac6921_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zh-jieli:ac6921:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:A/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • ADJACENT_NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 3.3
  • Severity
  • LOW
  • Exploitability Score
  • 6.5
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • Attack Vector
  • ADJACENT_NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.7
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.1
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://launchstudio.bluetooth.com/ListingDetails/58628 Third Party Advisory
https://launchstudio.bluetooth.com/ListingDetails/19746 Third Party Advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf Broken Link
http://www.zh-jieli.com/product/68-cn.html Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-31611
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31611
History
Created Old Value New Value Data Type Notes
2022-05-08 06:19:44 Added to TrackCVE
2022-12-05 09:41:43 2021-09-07T07:15Z 2021-09-07T07:15:07 CVE Published Date updated
2022-12-05 09:41:43 2022-05-03T16:04:40 CVE Modified Date updated
2022-12-05 09:41:43 Analyzed Vulnerability Status updated