Vulnerability identifier: #VU60710

Vulnerability risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22990

CWE-ID: CWE-287

Exploitation vector: Local 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 Gen 2
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 My Cloud
Hardware solutions / Office equipment, IP-phones, print servers
My Cloud
Hardware solutions / Office equipment, IP-phones, print servers
My Cloud OS 5
Operating systems & Components / Operating system

Vendor: Western Digital

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to incorrect string matching logic when accessing protected pages within the nasAdmin service. A remote attacker on the local network can bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

My Cloud PR2100: All versions

My Cloud PR4100: All versions

My Cloud EX4100: All versions

My Cloud EX2 Ultra: All versions

My Cloud Mirror Gen 2: All versions

My Cloud DL2100: All versions

My Cloud DL4100: All versions

My Cloud EX2100: All versions

WD My Cloud: All versions

My Cloud: All versions

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External links
http://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117
http://www.zerodayinitiative.com/advisories/ZDI-22-347/

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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