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.
Solution:
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
The product compares two entities in a security-relevant context, but the comparison is incorrect, which may lead to resultant weaknesses.
| Link | Tags |
|---|---|
| https://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117 | vendor advisory |
| https://www.zerodayinitiative.com/advisories/ZDI-22-076/ | third party advisory vdb entry |
| https://www.zerodayinitiative.com/advisories/ZDI-22-347/ | third party advisory vdb entry |