CVE-2019-18989

A partial authentication bypass vulnerability exists on Mediatek MT7620N 1.06 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.

CVSS v3 5.4 MEDIUM
CVSS v2.0 4.8 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

4.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 6.5 / Impact : 4.9

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://www.synopsys.com/blogs/software-security/cyrc-advisory-sept2020/	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:mediatek:mt7620n_firmware:1.06:*:*:*:*:*:*:*

cpe:2.3:h:mediatek:mt7620n:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-09-30 18:15

Updated : 2024-02-04 21:23

NVD link : CVE-2019-18989

Mitre link : CVE-2019-18989

CVE.ORG link : CVE-2019-18989

JSON object : View

Products Affected

mediatek

mt7620n_firmware
mt7620n

CWE

CWE-290

Authentication Bypass by Spoofing

{"id": "CVE-2019-18989", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.8, "accessVector": "ADJACENT_NETWORK", "vectorString": "AV:A/AC:L/Au:N/C:P/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 6.5, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 6.1, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.8}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}]}, "published": "2020-09-30T18:15:17.317", "references": [{"url": "https://www.synopsys.com/blogs/software-security/cyrc-advisory-sept2020/", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-290"}]}], "descriptions": [{"lang": "en", "value": "A partial authentication bypass vulnerability exists on Mediatek MT7620N 1.06 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data."}, {"lang": "es", "value": "Se presenta una vulnerabilidad de omisi\u00f3n de autenticaci\u00f3n parcial en los dispositivos Mediatek MT7620N versi\u00f3n 1.06. La vulnerabilidad permite enviar una trama de datos no cifrada hacia un enrutador WLAN protegido por WPA2 donde el paquete se enruta por medio de la red. Si tiene \u00e9xito, es enviado una respuesta como una trama cifrada, lo que permitir\u00eda a un atacante discernir informaci\u00f3n o potencialmente modificar datos"}], "lastModified": "2021-07-21T11:39:23.747", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt7620n_firmware:1.06:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A5D414A6-4CAD-4AA2-A78A-7E647ADD9293"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt7620n:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "455A7ED2-685B-47E9-8FBF-D24EA7EB9AF0"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}