#VU74236 Arbitrary file upload in SkyBridge MB-A100 and SkyBridge MB-A110 - CVE-2022-36557

Vulnerability identifier: #VU74236

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-36557

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SkyBridge MB-A100
Hardware solutions / Routers & switches, VoIP, GSM, etc
SkyBridge MB-A110
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Seiko Solutions

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload. A remote user can upload a malicious file and execute it on the server.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SkyBridge MB-A100: 4.2.0

SkyBridge MB-A110: 4.2.0

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External links
https://jvn.jp/en/jp/JVN40604023/index.html
https://www.seiko-sol.co.jp/archives/73969/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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