ZDI-22-348: (Pwn2Own) Western Digital MyCloud PR4100 cgi_api Server-Side Request Forgery Privilege Escalation Vulnerability
This vulnerability allows network-adjacent attackers to escalate privileges on affected installations of Western Digital MyCloud PR4100. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the cgiapi endpoint. The issue results from the lack of proper validation of URIs prior to accessing resources. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root.
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-22-348?
The ZDI-22-348 vulnerability is classified as a high-severity privilege escalation flaw.
How do I fix ZDI-22-348?
To address the ZDI-22-348 vulnerability, update the Western Digital MyCloud PR4100 to the latest firmware version released by Western Digital.
Who is affected by ZDI-22-348?
ZDI-22-348 affects users of the Western Digital MyCloud PR4100 storage device.
Can ZDI-22-348 be exploited remotely?
While ZDI-22-348 requires authentication, it can be exploited by network-adjacent attackers who can bypass existing mechanisms.
What type of attacks does ZDI-22-348 enable?
ZDI-22-348 enables attacks that allow escalated privileges on the affected devices.