CVE-2020-28971

An issue was discovered on Western Digital My Cloud OS 5 devices before 5.06.115. A NAS Admin authentication bypass vulnerability could allow an unauthenticated user to execute privileged commands on the device via a cookie, because of insufficient validation of URI paths.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://support.wdc.com/downloads.aspx?g=907&lang=en#downloads	Patch Vendor Advisory
https://www.westerndigital.com/support/productsecurity/wdc-20009-os5-firmware-5-06-115	Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1447/	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:westerndigital:my_cloud_os_5:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:westerndigital:my_cloud_ex2_ultra:-:::::::*
	cpe:2.3:h:westerndigital:my_cloud_ex4100:-:::::::*
	cpe:2.3:h:westerndigital:my_cloud_mirror_gen_2:-:::::::*
	cpe:2.3:h:westerndigital:my_cloud_pr2100:-:::::::*
	cpe:2.3:h:westerndigital:my_cloud_pr4100:-:::::::*

History

26 Apr 2022, 16:11

Type	Values Removed	Values Added
CWE	~~CWE-20~~	CWE-287
References	~~(MISC) https://www.zerodayinitiative.com/advisories/ZDI-20-1447/ -~~	(MISC) https://www.zerodayinitiative.com/advisories/ZDI-20-1447/ - Third Party Advisory, VDB Entry

Information

Published : 2020-12-01 16:15

Updated : 2023-12-10 13:41

NVD link : CVE-2020-28971

Mitre link : CVE-2020-28971

CVE.ORG link : CVE-2020-28971

JSON object : View

Products Affected

westerndigital

my_cloud_pr4100
my_cloud_ex4100
my_cloud_os_5
my_cloud_mirror_gen_2
my_cloud_ex2_ultra
my_cloud_pr2100

CWE

CWE-287

Improper Authentication

{"id": "CVE-2020-28971", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2020-12-01T16:15:11.003", "references": [{"url": "https://support.wdc.com/downloads.aspx?g=907&lang=en#downloads", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.westerndigital.com/support/productsecurity/wdc-20009-os5-firmware-5-06-115", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.zerodayinitiative.com/advisories/ZDI-20-1447/", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-287"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered on Western Digital My Cloud OS 5 devices before 5.06.115. A NAS Admin authentication bypass vulnerability could allow an unauthenticated user to execute privileged commands on the device via a cookie, because of insufficient validation of URI paths."}, {"lang": "es", "value": "Se detect\u00f3 un problema en los dispositivos Western Digital My Cloud OS versiones 5 anteriores a 5.06.115. Una vulnerabilidad de omisi\u00f3n de autenticaci\u00f3n de administrador de NAS podr\u00eda permitir a un usuario no autenticado ejecutar comandos privilegiados en el dispositivo por medio de una cookie, debido a una comprobaci\u00f3n insuficiente de las rutas del URI"}], "lastModified": "2022-04-26T16:11:20.747", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:westerndigital:my_cloud_os_5:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FBF3453E-F77B-4F3F-94D6-318EF8BAEBAC", "versionEndExcluding": "5.06.115"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:westerndigital:my_cloud_ex2_ultra:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "5A581EBA-A1F2-4ABC-8183-29973A46FA43"}, {"criteria": "cpe:2.3:h:westerndigital:my_cloud_ex4100:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "B78030F0-6655-4604-9D16-2FA1F3FD52FF"}, {"criteria": "cpe:2.3:h:westerndigital:my_cloud_mirror_gen_2:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "5695E842-1561-4A4F-901F-6EC07F558989"}, {"criteria": "cpe:2.3:h:westerndigital:my_cloud_pr2100:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "BF58260B-2131-402C-A9DA-67B188136DE1"}, {"criteria": "cpe:2.3:h:westerndigital:my_cloud_pr4100:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "CB0C2FD9-4792-4DA2-9698-E53109A499EC"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}