CVE-2021-27941

Unconstrained Web access to the device's private encryption key in the QR code pairing mode in the eWeLink mobile application (through 4.9.2 on Android and through 4.9.1 on iOS) allows a physically proximate attacker to eavesdrop on Wi-Fi credentials and other sensitive information by monitoring the Wi-Fi spectrum during a device pairing process.

CVSS v3 4.6 MEDIUM
CVSS v2.0 2.1 LOW

4.6^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.9 / Impact : 3.6

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

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

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://apps.apple.com/us/app/ewelink-smart-home/id1035163158	Product Third Party Advisory
https://github.com/salgio/eWeLink-QR-Code	Third Party Advisory
https://play.google.com/store/apps/details?id=com.coolkit&hl=en_US	Product Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:coolkit:ewelink::::::iphone_os::*
	cpe:2.3:a:coolkit:ewelink::::::android::*

History

No history.

Information

Published : 2021-05-06 21:15

Updated : 2024-02-28 18:28

NVD link : CVE-2021-27941

Mitre link : CVE-2021-27941

CVE.ORG link : CVE-2021-27941

JSON object : View

Products Affected

coolkit

ewelink

CWE

CWE-522

Insufficiently Protected Credentials

{"id": "CVE-2021-27941", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 2.1, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "LOW", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.6, "attackVector": "PHYSICAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 0.9}]}, "published": "2021-05-06T21:15:07.597", "references": [{"url": "https://apps.apple.com/us/app/ewelink-smart-home/id1035163158", "tags": ["Product", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/salgio/eWeLink-QR-Code", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://play.google.com/store/apps/details?id=com.coolkit&hl=en_US", "tags": ["Product", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-522"}]}], "descriptions": [{"lang": "en", "value": "Unconstrained Web access to the device's private encryption key in the QR code pairing mode in the eWeLink mobile application (through 4.9.2 on Android and through 4.9.1 on iOS) allows a physically proximate attacker to eavesdrop on Wi-Fi credentials and other sensitive information by monitoring the Wi-Fi spectrum during a device pairing process."}, {"lang": "es", "value": "El acceso web sin restricciones a la clave de cifrado privada del dispositivo en el modo de emparejamiento de c\u00f3digo QR en la aplicaci\u00f3n m\u00f3vil eWeLink (versiones hasta.9.2 en Android y versiones hasta.9.1 en iOS) permite a un atacante f\u00edsicamente pr\u00f3ximo espiar las credenciales de Wi-Fi y otras informaci\u00f3n mediante el seguimiento del espectro de Wi-Fi durante un proceso de emparejamiento de dispositivos"}], "lastModified": "2022-07-12T17:42:04.277", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:coolkit:ewelink:*:*:*:*:*:iphone_os:*:*", "vulnerable": true, "matchCriteriaId": "3C19C39C-9C55-4C57-8BF2-C32E843249E5", "versionEndIncluding": "4.9.1"}, {"criteria": "cpe:2.3:a:coolkit:ewelink:*:*:*:*:*:android:*:*", "vulnerable": true, "matchCriteriaId": "6198F9C4-23C8-46B3-9100-B96C60407F1C", "versionEndIncluding": "4.9.2"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}