CVE-2022-22991

Command injection through unsecured HTTP calls on Western Digital My Cloud devices

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A malicious user on the same LAN could use DNS spoofing followed by a command injection attack to trick a NAS device into loading through an unsecured HTTP call. Addressed this vulnerability by disabling checks for internet connectivity using HTTP.

Un usuario malicioso en la misma LAN podría usar una suplantación de DNS seguida de un ataque de inyección de comandos para engañar a un dispositivo NAS para que sea cargado mediante una llamada HTTP no segura. Se ha abordado esta vulnerabilidad al deshabilitar las comprobaciones de conectividad a Internet mediante HTTP

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Western Digital MyCloud PR4100. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the ConnectivityService service. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root.

*Credits: Reported By: Martin Rakhmanov (@mrakhmanov) working with Trend Micro’s Zero Day Initiative

CVSS Scores

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* 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-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CAPEC

References (2)

URL	Tag	Source
https://www.zerodayinitiative.com/advisories/ZDI-22-077	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	2022-01-21

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