Vulnerability Details CVE-2021-3310
Western Digital My Cloud OS 5 devices before 5.10.122 mishandle Symbolic Link Following on SMB and AFP shares. This can lead to code execution and information disclosure (by reading local files).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.011
EPSS Ranking 77.5%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 4.6
References
- https://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122
- https://www.zerodayinitiative.com/advisories/ZDI-21-277/
- https://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122
- https://www.zerodayinitiative.com/advisories/ZDI-21-277/
Products affected by CVE-2021-3310
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cpe:2.3:h:westerndigital:my_cloud_dl2100:-
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cpe:2.3:h:westerndigital:my_cloud_dl4100:-
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cpe:2.3:h:westerndigital:my_cloud_ex2100:-
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cpe:2.3:h:westerndigital:my_cloud_ex2_ultra:-
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cpe:2.3:h:westerndigital:my_cloud_ex4100:-
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cpe:2.3:h:westerndigital:my_cloud_mirror_gen_2:-
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cpe:2.3:h:westerndigital:my_cloud_pr2100:-
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cpe:2.3:h:westerndigital:my_cloud_pr4100:-
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cpe:2.3:o:westerndigital:my_cloud_os:-
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cpe:2.3:o:westerndigital:my_cloud_os:5.02.104
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cpe:2.3:o:westerndigital:my_cloud_os:5.03.103
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cpe:2.3:o:westerndigital:my_cloud_os:5.04.114
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cpe:2.3:o:westerndigital:my_cloud_os:5.05.111
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cpe:2.3:o:westerndigital:my_cloud_os:5.06.115
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cpe:2.3:o:westerndigital:my_cloud_os:5.07.118
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cpe:2.3:o:westerndigital:my_cloud_os:5.08.115
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cpe:2.3:o:westerndigital:my_cloud_os:5.09.115