title: Post-authentication remote command injection vulnerability on Western Digital My Cloud OS 5 devices
description:
Post-authentication remote command injection vulnerability in Western Digital My Cloud OS 5 devices that could allow an attacker to execute code in the context of the root user on vulnerable CGI files. This vulnerability can only be exploited over the network and the attacker must already have admin/root privileges to carry out the exploit. An authentication bypass is required for this exploit, thereby making it more complex. The attack may not require user interaction. Since an attacker must already be authenticated, the confidentiality impact is low while the integrity and availability impact is high.
This issue affects My Cloud OS 5 devices: before 5.26.300.
problem types: CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
affected:
{
defaultStatus: unaffected
platforms: Linux
product: My Cloud OS 5
vendor: Western Digital
versions:
lessThan: 5.26.300, status: affected, version: 0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 6.2
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: HIGH
privilegesRequired: HIGH
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Western Digital recommends that users promptly update their devices to the latest firmware by clicking on the firmware update notification.