title: Device API endpoint missing access controls on Western Digital Mobile and Web Apps
description:
A device API
endpoint was missing access controls on Western Digital My Cloud OS 5 iOS and Anroid Mobile Apps, My Cloud Home iOS and Android Mobile Apps, SanDisk ibi iOS and Android Mobile Apps, My Cloud OS 5 Web App, My Cloud Home Web App and the SanDisk ibi Web App. Due to a permissive CORS policy
and missing authentication requirement for private IPs, a remote attacker on
the same network as the device could obtain device information by convincing a
victim user to visit an attacker-controlled server and issue a cross-site
request.
This issue affects
My Cloud OS 5 Mobile App: before 4.21.0; My Cloud Home Mobile App: before 4.21.0; ibi Mobile App: before 4.21.0; My
Cloud OS 5 Web App: before 4.26.0-6126; My Cloud Home Web App: before 4.26.0-6126;
ibi Web App: before 4.26.0-6126.
problem types: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
affected:
{
defaultStatus: unaffected
platforms: [Android, iOS]
product: My Cloud OS 5 Mobile App
vendor: Western Digital
versions:
lessThan: 4.21.0, status: affected, version: 0, versionType: custom
}
{
defaultStatus: unaffected
platforms: [iOS, Android]
product: My Cloud Home Mobile App
vendor: Western Digital
versions:
lessThan: 4.21.0, status: affected, version: 0, versionType: custom
}
{
defaultStatus: unaffected
platforms: [Android, iOS]
product: ibi Mobile App
vendor: SanDisk
versions:
lessThan: 4.21.0, status: affected, version: 0, versionType: custom
}
{
defaultStatus: unaffected
product: My Cloud OS 5 Web App
vendor: Western Digital
versions:
lessThan:  4.26.0-6126, status: affected, version: 0, versionType: custom
}
{
defaultStatus: unaffected
product: My Cloud Home Web App
vendor: Western Digital
versions:
lessThan:  4.26.0-6126, status: affected, version: 0, versionType: custom
}
{
defaultStatus: unaffected
product: ibi Web App
vendor: SanDisk
versions:
lessThan:  4.26.0-6126, status: affected, version: 0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: NONE
baseScore: 3.3
baseSeverity: LOW
confidentialityImpact: LOW
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Western Digital recommends that users of the mobile apps should promptly update the apps to reflect the latest changes. The web apps have automatically been updated.