#VU77147 Improper Authentication in Western Digital products - CVE-2022-36331

Vulnerability identifier: #VU77147

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-36331

CWE-ID: CWE-287

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 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 vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to improper authentication within the way the device connects with cloud services. A remote attacker can bypass authentication process and gain access to user data.

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 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.zerodayinitiative.com/advisories/ZDI-23-847/
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-23-846/

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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.