Out-of-bounds write in Western Digital products - CVE-2022-29844

Vulnerability identifier: #VU71213

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-29844

CWE-ID: CWE-787

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in the FTP service. A remote attacker can trigger out-of-bounds write and execute arbitrary code on the target system.

My Cloud PR2100
My Cloud PR4100
My Cloud EX4100
My Cloud EX2 Ultra
My Cloud Mirror G2
My Cloud DL2100
My Cloud DL4100
My Cloud EX2100
WD Cloud
My Cloud

Install updates from vendor's website.

My Cloud PR2100 - update to 5.26.119
My Cloud PR4100 - update to 5.26.119
My Cloud EX4100 - update to 5.26.119
My Cloud EX2 Ultra - update to 5.26.119
My Cloud Mirror G2 - update to 5.26.119
My Cloud DL2100 - update to 5.26.119
My Cloud DL4100 - update to 5.26.119
My Cloud EX2100 - update to 5.26.119
My Cloud - update to 5.26.119
WD Cloud - update to 5.26.119

• https://www.westerndigital.com/support/product-security/wdc-23002-my-cloud-firmware-version-5-26-119
• https://www.zerodayinitiative.com/advisories/ZDI-23-112/

• Multiple vulnerabilities in Western Digital My Cloud OS 5 devices