CVE-2022-29840

Server Side Request Forgery Vulnerability in Western Digital My Cloud Devices

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Server-Side Request Forgery (SSRF) vulnerability that could allow a rogue server on the local network to modify its URL to point back to the loopback adapter was addressed in Western Digital My Cloud OS 5 devices. This could allow the URL to exploit other vulnerabilities on the local server.This issue affects My Cloud OS 5 devices before 5.26.202.

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Western Digital MyCloud PR4100 NAS devices. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the RESTSDK server. The issue results from the lack of proper validation of a URI prior to accessing resources. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root.

*Credits: Sam Thomas (@_s_n_t) of Pentest Ltd (@pentestltd) working with Trend Micro’s Zero Day Initiative

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-04-27 CVE Reserved
2023-05-10 CVE Published
2023-06-10 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-918: Server-Side Request Forgery (SSRF)

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://www.westerndigital.com/support/product-security/wdc-23006-my-cloud-firmware-version-5-26-202	2023-05-22

URL	Date	SRC

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"	>= 5.02.104 < 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os" and version " >= 5.02.104 < 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 Search vendor "Westerndigital" for product "My Cloud Os"	>= 5.02.104 < 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os" and version " >= 5.02.104 < 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 Search vendor "Westerndigital" for product "My Cloud Os"	>= 5.02.104 < 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os" and version " >= 5.02.104 < 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 Search vendor "Westerndigital" for product "My Cloud Os"	>= 5.02.104 < 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os" and version " >= 5.02.104 < 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 Search vendor "Westerndigital" for product "My Cloud Os"	>= 5.02.104 < 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os" and version " >= 5.02.104 < 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 Search vendor "Westerndigital" for product "My Cloud Os"	>= 5.02.104 < 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os" and version " >= 5.02.104 < 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 Search vendor "Westerndigital" for product "My Cloud Os"	>= 5.02.104 < 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os" and version " >= 5.02.104 < 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 Search vendor "Westerndigital" for product "My Cloud Os"	>= 5.02.104 < 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os" and version " >= 5.02.104 < 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 Search vendor "Westerndigital" for product "My Cloud Os"	>= 5.02.104 < 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os" and version " >= 5.02.104 < 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 Search vendor "Westerndigital" for product "My Cloud Os"	>= 5.02.104 < 5.26.202 Search vendor "Westerndigital" for product "My Cloud Os" and version " >= 5.02.104 < 5.26.202"	-	Affected	in	Westerndigital Search vendor "Westerndigital"	Wd Cloud Search vendor "Westerndigital" for product "Wd Cloud"	-	-	Safe