title: Path Traversal Vulnerability leading to an arbitrary file read in Western Digital devices
description: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability that could allow an attacker to create arbitrary shares on arbitrary directories and exfiltrate sensitive files, passwords, users and device configurations was discovered in Western Digital My Cloud Home, My Cloud Home Duo, SanDisk ibi and Western Digital My Cloud OS 5 devices. This can only be exploited once an attacker gains root privileges on the devices using an authentication bypass issue or another vulnerability.This issue affects My Cloud Home and My Cloud Home Duo: before 9.4.0-191; ibi: before 9.4.0-191; My Cloud OS 5: before 5.26.202.
problem types: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
affected:
{
defaultStatus: unaffected
platforms: Linux
product: My Cloud Home and My Cloud Home Duo
vendor: Western Digital
versions:
lessThan: 9.4.0-191, status: affected, version: 0, versionType: custom
}
{
defaultStatus: unaffected
platforms: Linux
product: ibi
vendor: SanDisk
versions:
lessThan: 9.4.0-191, status: affected, version: 0, versionType: custom
}
{
defaultStatus: unaffected
platforms: Linux
product: My Cloud OS 5
vendor: Western Digital
versions:
lessThan: 5.26.202, status: affected, version: 0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 5.8
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: HIGH
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions:
For My Cloud Home, My Cloud Home Duo and SanDisk ibi
devices will be automatically updated to reflect the latest
firmware version.
For My Cloud OS 5 devices, Western Digital recommends
that users promptly update their devices to the latest firmware by clicking on
the firmware update notification.