Hidden functionality in BUFFALO INC. products - CVE-2022-43486

Vulnerability identifier: #VU70084

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2022-43486

CWE-ID: CWE-912

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

Vendor: BUFFALO INC.

Affected software:
WSR-3200AX4S
WSR-3200AX4B
WSR-2533DHP
WSR-2533DHP2
WSR-A2533DHP2
WSR-2533DHP3
WSR-A2533DHP3
WSR-2533DHPL
WSR-2533DHPL2
WSR-2533DHPLS
WCR-1166DS
WEX-1800AX4
WEX-1800AX4EA

The vulnerability allows a remote user to compromise vulnerable system

The vulnerability exists due to hidden functionality (backdoor) is present in software. A remote administrator on the local network can use this functionality to gain full access to the application and execute arbitrary commands on the system.

Install updates from vendor's website.

• https://jvn.jp/en/vu/JVNVU97099584/index.html
• https://www.buffalo.jp/news/detail/20221205-01.html