CVE-2021-3774

Meross Smart Wi-Fi 2 Way Wall Switch (MSS550X), on its 3.1.3 version and before, creates an open Wi-Fi Access Point without the required security measures in its initial setup. This could allow a remote attacker to obtain the Wi-Fi SSID as well as the password configured by the user from Meross app via Http/JSON plain request.

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://www.incibe.es/en/incibe-cert/notices/aviso/meross-mss550x-missing-encryption-sensitive-data

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:meross:mss550x_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:meross:mss550x:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-11-05 21:15

Updated : 2023-11-20 14:15

NVD link : CVE-2021-3774

Mitre link : CVE-2021-3774

CVE.ORG link : CVE-2021-3774

JSON object : View

Products Affected

meross

mss550x_firmware
mss550x

CWE

CWE-319

Cleartext Transmission of Sensitive Information

{"id": "CVE-2021-3774", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "cve-coordination@incibe.es", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 4.0, "exploitabilityScore": 2.8}]}, "published": "2021-11-05T21:15:08.480", "references": [{"url": "https://www.incibe.es/en/incibe-cert/notices/aviso/meross-mss550x-missing-encryption-sensitive-data", "source": "cve-coordination@incibe.es"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-319"}]}, {"type": "Secondary", "source": "cve-coordination@incibe.es", "description": [{"lang": "en", "value": "CWE-319"}]}], "descriptions": [{"lang": "en", "value": "Meross Smart Wi-Fi 2 Way Wall Switch (MSS550X), on its 3.1.3 version and before, creates an open Wi-Fi Access Point without the required security measures in its initial setup. This could allow a remote attacker to obtain the Wi-Fi SSID as well as the password configured by the user from Meross app via Http/JSON plain request."}, {"lang": "es", "value": "Meross Smart Wi-Fi 2 Way Wall Switch (MSS550X), en su versi\u00f3n 3.1.3 y anteriores, crea un punto de acceso Wi-Fi abierto sin las medidas de seguridad necesarias en su configuraci\u00f3n inicial. Esto podr\u00eda permitir a un atacante remoto obtener el SSID Wi-Fi as\u00ed como la contrase\u00f1a configurada por el usuario desde la app de Meross por medio de una petici\u00f3n Http/JSON simple"}], "lastModified": "2023-11-20T14:15:07.210", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:meross:mss550x_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E1C85657-9D38-488C-9CAA-BCCE5679E5C5", "versionEndIncluding": "3.1.3"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:meross:mss550x:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "6B6C29E4-18D8-4F1B-805E-D38CF4F6141A"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve-coordination@incibe.es"}