CVE-2022-22990: (Pwn2Own) Western Digital MyCloud PR4100 nasAdmin Authentication Bypass Vulnerability
First published: Thu Jan 13 2022(Updated: )
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.
Credit: psirt@wdc.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Western Digital MyCloud PR4100 | ||
| Westerndigital My Cloud Os | <5.19.117 | |
| Westerndigital My Cloud | ||
| Westerndigital My Cloud Dl2100 | ||
| Westerndigital My Cloud Dl4100 | ||
| Westerndigital My Cloud Ex2 Ultra | ||
| Westerndigital My Cloud Ex2100 | ||
| Westerndigital My Cloud Ex4100 | ||
| Westerndigital My Cloud Mirror Gen 2 | ||
| Westerndigital My Cloud Pr2100 | ||
| Westerndigital My Cloud Pr4100 | ||
| Westerndigital Wd Cloud |
Remedy
Update your My Cloud device to firmware version 5.19.117.
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is CVE-2022-22990.
What is the title of this vulnerability?
The title of this vulnerability is (Pwn2Own) Western Digital MyCloud PR4100 nasAdmin Authentication Bypass Vulnerability.
What is the severity of CVE-2022-22990?
The severity of CVE-2022-22990 is high (8.8).
How does CVE-2022-22990 affect Western Digital MyCloud PR4100?
CVE-2022-22990 allows network-adjacent attackers to bypass authentication on affected installations of Western Digital MyCloud PR4100.
Is authentication required to exploit CVE-2022-22990?
No, authentication is not required to exploit CVE-2022-22990.
Where can I find more information about CVE-2022-22990?
You can find more information about CVE-2022-22990 at the following references: [link1](https://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117), [link2](https://www.zerodayinitiative.com/advisories/ZDI-22-347/), [link3](https://www.zerodayinitiative.com/advisories/ZDI-22-076/).
How do I fix the CVE-2022-22990 vulnerability?
To fix the CVE-2022-22990 vulnerability, you should update your Western Digital MyCloud PR4100 firmware to version 5.19.117 or later.
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