CVE-2021-3310

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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).

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link Resource
https://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-277/ Third Party Advisory
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:westerndigital:my_cloud_os:*:*:*:*:*:*:*:*
OR cpe:2.3:h:westerndigital:my_cloud_dl2100:-:*:*:*:*:*:*:*
cpe:2.3:h:westerndigital:my_cloud_dl4100:-:*:*:*:*:*:*:*
cpe:2.3:h:westerndigital:my_cloud_ex2_ultra:-:*:*:*:*:*:*:*
cpe:2.3:h:westerndigital:my_cloud_ex2100:-:*:*:*:*:*:*:*
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

17 Mar 2021, 17:42

Type Values Removed Values Added
References (MISC) https://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122 - (MISC) https://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122 - Vendor Advisory
References (MISC) https://www.zerodayinitiative.com/advisories/ZDI-21-277/ - (MISC) https://www.zerodayinitiative.com/advisories/ZDI-21-277/ - Third Party Advisory
CWE CWE-59
CPE cpe:2.3:h:westerndigital:my_cloud_mirror_gen_2:-:*:*:*:*:*:*:*
cpe:2.3:h:westerndigital:my_cloud_ex2100:-:*:*:*:*:*:*:*
cpe:2.3:h:westerndigital:my_cloud_ex4100:-:*:*:*:*:*:*:*
cpe:2.3:h:westerndigital:my_cloud_ex2_ultra:-:*:*:*:*:*:*:*
cpe:2.3:h:westerndigital:my_cloud_dl2100:-:*:*:*:*:*:*:*
cpe:2.3:h:westerndigital:my_cloud_dl4100:-:*:*:*:*:*:*:*
cpe:2.3:h:westerndigital:my_cloud_pr4100:-:*:*:*:*:*:*:*
cpe:2.3:h:westerndigital:my_cloud_pr2100:-:*:*:*:*:*:*:*
cpe:2.3:o:westerndigital:my_cloud_os:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 4.6
v3 : 7.8

11 Mar 2021, 23:15

Type Values Removed Values Added
References
  • (MISC) https://www.zerodayinitiative.com/advisories/ZDI-21-277/ -

10 Mar 2021, 05:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-03-10 05:15

Updated : 2023-12-10 13:41

NVD link : CVE-2021-3310

Mitre link : CVE-2021-3310

CVE.ORG link : CVE-2021-3310

JSON object : View

Products Affected

westerndigital

  • my_cloud_pr4100
  • my_cloud_ex4100
  • my_cloud_os
  • my_cloud_dl2100
  • my_cloud_dl4100
  • my_cloud_pr2100
  • my_cloud_mirror_gen_2
  • my_cloud_ex2_ultra
  • my_cloud_ex2100
CWE
CWE-59

Improper Link Resolution Before File Access ('Link Following')