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ID

VAR-202301-0806


CVE

CVE-2021-3966


TITLE

Zephyr  Classic buffer overflow vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2022-005337

DESCRIPTION

usb device bluetooth class includes a buffer overflow related to implementation of net_buf_add_mem. Zephyr Exists in a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state

Trust: 1.62

sources: NVD: CVE-2021-3966 // JVNDB: JVNDB-2022-005337

IOT TAXONOMY

category:['network device']sub_category:bluetooth device

Trust: 0.1

sources: OTHER: None

AFFECTED PRODUCTS

vendor:zephyrprojectmodel:zephyrscope:ltversion:3.0.0

Trust: 1.0

vendor:zephyrmodel:zephyrscope:eqversion: -

Trust: 0.8

vendor:zephyrmodel:zephyrscope: - version: -

Trust: 0.8

sources: JVNDB: JVNDB-2022-005337 // NVD: CVE-2021-3966

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-3966
value: HIGH

Trust: 1.0

vulnerabilities@zephyrproject.org: CVE-2021-3966
value: CRITICAL

Trust: 1.0

NVD: CVE-2021-3966
value: HIGH

Trust: 0.8

CNNVD: CNNVD-202301-825
value: HIGH

Trust: 0.6

nvd@nist.gov: CVE-2021-3966
baseSeverity: HIGH
baseScore: 8.8
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: ADJACENT
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.8
impactScore: 5.9
version: 3.1

Trust: 1.0

vulnerabilities@zephyrproject.org: CVE-2021-3966
baseSeverity: CRITICAL
baseScore: 9.6
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H
attackVector: ADJACENT
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: LOW
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.8
impactScore: 6.0
version: 3.1

Trust: 1.0

NVD: CVE-2021-3966
baseSeverity: HIGH
baseScore: 8.8
vectorString: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: ADJACENT NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: JVNDB: JVNDB-2022-005337 // CNNVD: CNNVD-202301-825 // NVD: CVE-2021-3966 // NVD: CVE-2021-3966

PROBLEMTYPE DATA

problemtype:CWE-122

Trust: 1.0

problemtype:CWE-120

Trust: 1.0

problemtype:Classic buffer overflow (CWE-120) [NVD evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2022-005337 // NVD: CVE-2021-3966

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202301-825

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202301-825

PATCH

title:Usb bluetooth device ACL read cb buffer overflowurl:https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-hfxq-3w6x-fv2m

Trust: 0.8

sources: JVNDB: JVNDB-2022-005337

EXTERNAL IDS

db:NVDid:CVE-2021-3966

Trust: 3.3

db:JVNDBid:JVNDB-2022-005337

Trust: 0.8

db:CNNVDid:CNNVD-202301-825

Trust: 0.6

db:OTHERid:NONE

Trust: 0.1

sources: OTHER: None // JVNDB: JVNDB-2022-005337 // CNNVD: CNNVD-202301-825 // NVD: CVE-2021-3966

REFERENCES

url:https://github.com/zephyrproject-rtos/zephyr/security/advisories/ghsa-hfxq-3w6x-fv2m

Trust: 1.6

url:https://nvd.nist.gov/vuln/detail/cve-2021-3966

Trust: 0.8

url:https://cxsecurity.com/cveshow/cve-2021-3966/

Trust: 0.6

url:https://ieeexplore.ieee.org/abstract/document/10769424

Trust: 0.1

sources: OTHER: None // JVNDB: JVNDB-2022-005337 // CNNVD: CNNVD-202301-825 // NVD: CVE-2021-3966

SOURCES

db:OTHERid: -
db:JVNDBid:JVNDB-2022-005337
db:CNNVDid:CNNVD-202301-825
db:NVDid:CVE-2021-3966

LAST UPDATE DATE

2025-01-30T19:54:32.424000+00:00


SOURCES UPDATE DATE

db:JVNDBid:JVNDB-2022-005337date:2023-05-29T01:43:00
db:CNNVDid:CNNVD-202301-825date:2023-01-19T00:00:00
db:NVDid:CVE-2021-3966date:2023-01-18T20:03:55.547

SOURCES RELEASE DATE

db:JVNDBid:JVNDB-2022-005337date:2023-05-29T00:00:00
db:CNNVDid:CNNVD-202301-825date:2023-01-11T00:00:00
db:NVDid:CVE-2021-3966date:2023-01-11T05:15:10.940