#VU67886 Hidden functionality in BUFFALO INC. products - CVE-2022-39044

Vulnerability identifier: #VU67886

Vulnerability risk: Low

CVSSv4.0: 5.9 [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-2022-39044

CWE-ID: CWE-912

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
WCR-300
Hardware solutions / Routers & switches, VoIP, GSM, etc
WHR-HP-G300N
Hardware solutions / Routers & switches, VoIP, GSM, etc
WHR-HP-GN
Hardware solutions / Routers & switches, VoIP, GSM, etc
WPL-05G300
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: BUFFALO INC.

Description

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 OS commands on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WCR-300: before 1.88

WHR-HP-G300N: before 2.01

WHR-HP-GN: before 1.88

WPL-05G300: before 1.89

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External links
https://jvn.jp/en/vu/JVNVU92805279/index.html
https://www.buffalo.jp/news/detail/20221003-01.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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