A limited authentication bypass vulnerability was discovered that could allow an attacker to achieve remote code execution and escalate privileges on the My Cloud devices. Addressed this vulnerability by changing access token validation logic and rewriting rule logic on PHP scripts.
Weakness
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| My_cloud_os | Westerndigital | * | 5.19.117 (excluding) |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/114.html
- https://cwe.mitre.org/data/definitions/115.html
- https://cwe.mitre.org/data/definitions/151.html
- https://cwe.mitre.org/data/definitions/194.html
- https://cwe.mitre.org/data/definitions/22.html
- https://cwe.mitre.org/data/definitions/57.html
- https://cwe.mitre.org/data/definitions/593.html
- https://cwe.mitre.org/data/definitions/633.html
- https://cwe.mitre.org/data/definitions/650.html
- https://cwe.mitre.org/data/definitions/94.html
References
- https://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117
- https://www.zerodayinitiative.com/advisories/ZDI-22-076/
- https://www.zerodayinitiative.com/advisories/ZDI-22-347/
- https://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117
- https://www.zerodayinitiative.com/advisories/ZDI-22-076/
- https://www.zerodayinitiative.com/advisories/ZDI-22-347/