CVE-2022-36328

Path Traversal Vulnerability leading to an arbitrary file read in Western Digital devices

Severity Score

4.9

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability that could allow an attacker to create arbitrary shares on arbitrary directories and exfiltrate sensitive files, passwords, users and device configurations was discovered in Western Digital My Cloud Home, My Cloud Home Duo, SanDisk ibi and Western Digital My Cloud OS 5 devices. This can only be exploited once an attacker gains root privileges on the devices using an authentication bypass issue or another vulnerability.This issue affects My Cloud Home and My Cloud Home Duo: before 9.4.0-191; ibi: before 9.4.0-191; My Cloud OS 5: before 5.26.202.

This vulnerability allows remote attackers to create and read arbitrary files on affected installations of Western Digital MyCloud PR4100 NAS devices. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.
The specific flaw exists within the restsdk binary. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root.

*Credits: Claroty Research, Team82 - Vera Mens, Noam Moshe, Uri Katz and Sharon Brizinov working with Trend Micro’s Zero Day Initiative

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-07-20 CVE Reserved
2023-05-18 CVE Published
2024-05-24 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.westerndigital.com/support/product-security/wdc-23003-western-digital-my-cloud-home-my-cloud-home-duo-and-sandisk-ibi-firmware-version-9-4-0-191	2023-05-27
https://www.westerndigital.com/support/product-security/wdc-23006-my-cloud-firmware-version-5-26-202	2023-05-27

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 5 Search vendor "Westerndigital" for product "My Cloud Os 5"	< 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os 5" and version " < 5.26.202"	-	Affected	in	Westerndigital Search vendor "Westerndigital"	My Cloud Search vendor "Westerndigital" for product "My Cloud"	-	-	Safe
Westerndigital Search vendor "Westerndigital"	My Cloud Os 5 Search vendor "Westerndigital" for product "My Cloud Os 5"	< 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os 5" and version " < 5.26.202"	-	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 5 Search vendor "Westerndigital" for product "My Cloud Os 5"	< 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os 5" and version " < 5.26.202"	-	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 5 Search vendor "Westerndigital" for product "My Cloud Os 5"	< 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os 5" and version " < 5.26.202"	-	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 5 Search vendor "Westerndigital" for product "My Cloud Os 5"	< 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os 5" and version " < 5.26.202"	-	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 5 Search vendor "Westerndigital" for product "My Cloud Os 5"	< 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os 5" and version " < 5.26.202"	-	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 5 Search vendor "Westerndigital" for product "My Cloud Os 5"	< 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os 5" and version " < 5.26.202"	-	Affected	in	Westerndigital Search vendor "Westerndigital"	My Cloud Mirror G2 Search vendor "Westerndigital" for product "My Cloud Mirror G2"	-	-	Safe
Westerndigital Search vendor "Westerndigital"	My Cloud Os 5 Search vendor "Westerndigital" for product "My Cloud Os 5"	< 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os 5" and version " < 5.26.202"	-	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 5 Search vendor "Westerndigital" for product "My Cloud Os 5"	< 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os 5" and version " < 5.26.202"	-	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 5 Search vendor "Westerndigital" for product "My Cloud Os 5"	< 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os 5" and version " < 5.26.202"	-	Affected	in	Westerndigital Search vendor "Westerndigital"	Wd Cloud Search vendor "Westerndigital" for product "Wd Cloud"	-	-	Safe
Westerndigital Search vendor "Westerndigital"	My Cloud Home Firmware Search vendor "Westerndigital" for product "My Cloud Home Firmware"	< 9.4.0-191 Search vendor "Westerndigital" for product "My Cloud Home Firmware" and version " < 9.4.0-191"	-	Affected	in	Westerndigital Search vendor "Westerndigital"	My Cloud Home Search vendor "Westerndigital" for product "My Cloud Home"	-	-	Safe
Westerndigital Search vendor "Westerndigital"	Sandisk Ibi Firmware Search vendor "Westerndigital" for product "Sandisk Ibi Firmware"	< 9.4.0-191 Search vendor "Westerndigital" for product "Sandisk Ibi Firmware" and version " < 9.4.0-191"	-	Affected	in	Westerndigital Search vendor "Westerndigital"	Sandisk Ibi Search vendor "Westerndigital" for product "Sandisk Ibi"	-	-	Safe
Westerndigital Search vendor "Westerndigital"	My Cloud Home Duo Firmware Search vendor "Westerndigital" for product "My Cloud Home Duo Firmware"	< 9.4.0-191 Search vendor "Westerndigital" for product "My Cloud Home Duo Firmware" and version " < 9.4.0-191"	-	Affected	in	Westerndigital Search vendor "Westerndigital"	My Cloud Home Duo Search vendor "Westerndigital" for product "My Cloud Home Duo"	-	-	Safe