CVE-2022-22990
Limited authentication bypass vulnerability on Western Digital My Cloud devices
Severity Score
8.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
Se ha detectado una vulnerabilidad de omisión de autenticación limitada que podría permitir a un atacante lograr una ejecución de código remota y escalar privilegios en los dispositivos My Cloud. Se ha abordado esta vulnerabilidad al cambiar la lógica de comprobación de los tokens de acceso y reescribiendo la lógica de las reglas en los scripts de PHP
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Western Digital MyCloud PR4100. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the nasAdmin service, which listens on TCP ports 80 and 443 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to bypass authentication on the system.
*Credits:
Reported By: Sam Thomas (@_s_n_t) of Pentest Ltd (@pentestltd) working with Trend Micro’s Zero Day Initiative
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2022-01-10 CVE Reserved
- 2022-01-13 CVE Published
- 2024-08-03 CVE Updated
- 2024-08-19 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-287: Improper Authentication
- CWE-697: Incorrect Comparison
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-22-076 | Third Party Advisory |
|
| https://www.zerodayinitiative.com/advisories/ZDI-22-347 | Third Party Advisory |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117 | 2023-07-11 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Westerndigital Search vendor "Westerndigital" | My Cloud Os Search vendor "Westerndigital" for product "My Cloud Os" | < 5.19.117 Search vendor "Westerndigital" for product "My Cloud Os" and version " < 5.19.117" | - |
Affected
| in | Westerndigital Search vendor "Westerndigital" | My Cloud Search vendor "Westerndigital" for product "My Cloud" | - | - |
Safe
|
| Westerndigital Search vendor "Westerndigital" | My Cloud Os Search vendor "Westerndigital" for product "My Cloud Os" | < 5.19.117 Search vendor "Westerndigital" for product "My Cloud Os" and version " < 5.19.117" | - |
Affected
| in | Westerndigital Search vendor "Westerndigital" | My Cloud Dl2100 Search vendor "Westerndigital" for product "My Cloud Dl2100" | - | - |
Safe
|
| Westerndigital Search vendor "Westerndigital" | My Cloud Os Search vendor "Westerndigital" for product "My Cloud Os" | < 5.19.117 Search vendor "Westerndigital" for product "My Cloud Os" and version " < 5.19.117" | - |
Affected
| in | Westerndigital Search vendor "Westerndigital" | My Cloud Dl4100 Search vendor "Westerndigital" for product "My Cloud Dl4100" | - | - |
Safe
|
| Westerndigital Search vendor "Westerndigital" | My Cloud Os Search vendor "Westerndigital" for product "My Cloud Os" | < 5.19.117 Search vendor "Westerndigital" for product "My Cloud Os" and version " < 5.19.117" | - |
Affected
| in | Westerndigital Search vendor "Westerndigital" | My Cloud Ex2 Ultra Search vendor "Westerndigital" for product "My Cloud Ex2 Ultra" | - | - |
Safe
|
| Westerndigital Search vendor "Westerndigital" | My Cloud Os Search vendor "Westerndigital" for product "My Cloud Os" | < 5.19.117 Search vendor "Westerndigital" for product "My Cloud Os" and version " < 5.19.117" | - |
Affected
| in | Westerndigital Search vendor "Westerndigital" | My Cloud Ex2100 Search vendor "Westerndigital" for product "My Cloud Ex2100" | - | - |
Safe
|
| Westerndigital Search vendor "Westerndigital" | My Cloud Os Search vendor "Westerndigital" for product "My Cloud Os" | < 5.19.117 Search vendor "Westerndigital" for product "My Cloud Os" and version " < 5.19.117" | - |
Affected
| in | Westerndigital Search vendor "Westerndigital" | My Cloud Ex4100 Search vendor "Westerndigital" for product "My Cloud Ex4100" | - | - |
Safe
|
| Westerndigital Search vendor "Westerndigital" | My Cloud Os Search vendor "Westerndigital" for product "My Cloud Os" | < 5.19.117 Search vendor "Westerndigital" for product "My Cloud Os" and version " < 5.19.117" | - |
Affected
| in | Westerndigital Search vendor "Westerndigital" | My Cloud Mirror Gen 2 Search vendor "Westerndigital" for product "My Cloud Mirror Gen 2" | - | - |
Safe
|
| Westerndigital Search vendor "Westerndigital" | My Cloud Os Search vendor "Westerndigital" for product "My Cloud Os" | < 5.19.117 Search vendor "Westerndigital" for product "My Cloud Os" and version " < 5.19.117" | - |
Affected
| in | Westerndigital Search vendor "Westerndigital" | My Cloud Pr2100 Search vendor "Westerndigital" for product "My Cloud Pr2100" | - | - |
Safe
|
| Westerndigital Search vendor "Westerndigital" | My Cloud Os Search vendor "Westerndigital" for product "My Cloud Os" | < 5.19.117 Search vendor "Westerndigital" for product "My Cloud Os" and version " < 5.19.117" | - |
Affected
| in | Westerndigital Search vendor "Westerndigital" | My Cloud Pr4100 Search vendor "Westerndigital" for product "My Cloud Pr4100" | - | - |
Safe
|
| Westerndigital Search vendor "Westerndigital" | My Cloud Os Search vendor "Westerndigital" for product "My Cloud Os" | < 5.19.117 Search vendor "Westerndigital" for product "My Cloud Os" and version " < 5.19.117" | - |
Affected
| in | Westerndigital Search vendor "Westerndigital" | Wd Cloud Search vendor "Westerndigital" for product "Wd Cloud" | - | - |
Safe
|