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ID

VAR-202108-0735


CVE

CVE-2021-27953


TITLE

ecobee3 lite  In  NULL  Pointer dereference vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2021-009412

DESCRIPTION

A NULL pointer dereference vulnerability exists on the ecobee3 lite 4.5.81.200 device in the HomeKit Wireless Access Control setup process. A threat actor can exploit this vulnerability to cause a denial of service, forcing the device to reboot via a crafted HTTP request. Ecobee Ecobee3 Lite is a Wi-Fi smart thermostat from Ecobee, Canada

Trust: 2.25

sources: NVD: CVE-2021-27953 // JVNDB: JVNDB-2021-009412 // CNVD: CNVD-2021-59179 // VULMON: CVE-2021-27953

IOT TAXONOMY

category:['IoT']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-59179

AFFECTED PRODUCTS

vendor:ecobeemodel:ecobee3 litescope:eqversion:4.5.81.200

Trust: 1.6

vendor:ecobeemodel:ecobee3 litescope:eqversion:ecobee3 lite firmware 4.5.81.200

Trust: 0.8

vendor:ecobeemodel:ecobee3 litescope:eqversion: -

Trust: 0.8

sources: CNVD: CNVD-2021-59179 // JVNDB: JVNDB-2021-009412 // NVD: CVE-2021-27953

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-27953
value: HIGH

Trust: 1.0

NVD: CVE-2021-27953
value: HIGH

Trust: 0.8

CNVD: CNVD-2021-59179
value: MEDIUM

Trust: 0.6

CNNVD: CNNVD-202108-289
value: HIGH

Trust: 0.6

VULMON: CVE-2021-27953
value: HIGH

Trust: 0.1

nvd@nist.gov: CVE-2021-27953
severity: HIGH
baseScore: 7.8
vectorString: AV:N/AC:L/AU:N/C:N/I:N/A:C
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: COMPLETE
exploitabilityScore: 10.0
impactScore: 6.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.9

CNVD: CNVD-2021-59179
severity: MEDIUM
baseScore: 5.0
vectorString: AV:N/AC:L/AU:N/C:N/I:N/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2021-27953
baseSeverity: HIGH
baseScore: 7.5
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: 3.9
impactScore: 3.6
version: 3.1

Trust: 1.0

NVD: CVE-2021-27953
baseSeverity: HIGH
baseScore: 7.5
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: CNVD: CNVD-2021-59179 // VULMON: CVE-2021-27953 // JVNDB: JVNDB-2021-009412 // CNNVD: CNNVD-202108-289 // NVD: CVE-2021-27953

PROBLEMTYPE DATA

problemtype:CWE-476

Trust: 1.0

problemtype:NULL Pointer dereference (CWE-476) [NVD Evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-009412 // NVD: CVE-2021-27953

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202108-289

TYPE

code problem

Trust: 0.6

sources: CNNVD: CNNVD-202108-289

PATCH

title:Top Pageurl:https://www.ecobee.com/

Trust: 0.8

sources: JVNDB: JVNDB-2021-009412

EXTERNAL IDS

db:NVDid:CVE-2021-27953

Trust: 3.9

db:JVNDBid:JVNDB-2021-009412

Trust: 0.8

db:CNVDid:CNVD-2021-59179

Trust: 0.6

db:CNNVDid:CNNVD-202108-289

Trust: 0.6

db:VULMONid:CVE-2021-27953

Trust: 0.1

sources: CNVD: CNVD-2021-59179 // VULMON: CVE-2021-27953 // JVNDB: JVNDB-2021-009412 // CNNVD: CNNVD-202108-289 // NVD: CVE-2021-27953

REFERENCES

url:https://www.l9group.com/advisories/remote-denial-of-service-of-ecobee3-lite

Trust: 2.5

url:https://nvd.nist.gov/vuln/detail/cve-2021-27953

Trust: 1.4

url:https://cwe.mitre.org/data/definitions/476.html

Trust: 0.1

url:https://nvd.nist.gov

Trust: 0.1

sources: CNVD: CNVD-2021-59179 // VULMON: CVE-2021-27953 // JVNDB: JVNDB-2021-009412 // CNNVD: CNNVD-202108-289 // NVD: CVE-2021-27953

SOURCES

db:CNVDid:CNVD-2021-59179
db:VULMONid:CVE-2021-27953
db:JVNDBid:JVNDB-2021-009412
db:CNNVDid:CNNVD-202108-289
db:NVDid:CVE-2021-27953

LAST UPDATE DATE

2024-08-14T14:11:16.106000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2021-59179date:2021-08-08T00:00:00
db:VULMONid:CVE-2021-27953date:2021-08-11T00:00:00
db:JVNDBid:JVNDB-2021-009412date:2022-04-26T08:58:00
db:CNNVDid:CNNVD-202108-289date:2021-08-12T00:00:00
db:NVDid:CVE-2021-27953date:2021-08-11T19:16:55.980

SOURCES RELEASE DATE

db:CNVDid:CNVD-2021-59179date:2021-08-08T00:00:00
db:VULMONid:CVE-2021-27953date:2021-08-03T00:00:00
db:JVNDBid:JVNDB-2021-009412date:2022-04-26T00:00:00
db:CNNVDid:CNNVD-202108-289date:2021-08-03T00:00:00
db:NVDid:CVE-2021-27953date:2021-08-03T15:15:08.297