#VU70656 Server-Side Request Forgery (SSRF) in Western Digital products - CVE-2022-29840

Vulnerability identifier: #VU70656

Vulnerability risk: High

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-29840

CWE-ID: CWE-918

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
My Cloud PR2100
Hardware solutions / Other hardware appliances
My Cloud PR4100
Hardware solutions / Other hardware appliances
My Cloud EX4100
Hardware solutions / Other hardware appliances
My Cloud EX2 Ultra
Hardware solutions / Other hardware appliances
My Cloud Mirror G2
Hardware solutions / Other hardware appliances
My Cloud DL2100
Hardware solutions / Other hardware appliances
My Cloud DL4100
Hardware solutions / Other hardware appliances
My Cloud EX2100
Hardware solutions / Other hardware appliances
WD Cloud
Hardware solutions / Other hardware appliances
My Cloud
Hardware solutions / Office equipment, IP-phones, print servers
My Cloud Home
Client/Desktop applications / Other client software
My Cloud Home Duo
Client/Desktop applications / Other client software
SanDisk ibi
Client/Desktop applications / Other client software

Vendor: Western Digital

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input within the RESTSDK server. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

My Cloud PR2100: before 5.25.132

My Cloud PR4100: before 5.25.132

My Cloud EX4100: before 5.25.132

My Cloud EX2 Ultra: before 5.25.132

My Cloud Mirror G2: before 5.25.132

My Cloud DL2100: before 5.25.132

My Cloud DL4100: before 5.25.132

My Cloud EX2100: before 5.25.132

My Cloud: before 5.25.132

WD Cloud: before 5.25.132

My Cloud Home: before 8.13.1-102

My Cloud Home Duo: before 8.13.1-102

SanDisk ibi: before 8.13.1-102

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External links
https://www.westerndigital.com/support/product-security/wdc-22020-my-cloud-os-5-my-cloud-home-ibi-firmware-update
https://www.zerodayinitiative.com/advisories/ZDI-23-850/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.