#VU74233 Improper Following of a Certificate's Chain of Trust in SkyBridge MB-A200 and SkyBridge BASIC MB-A130 - CVE-2023-23901

Vulnerability identifier: #VU74233

Vulnerability risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-23901

CWE-ID: CWE-296

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SkyBridge MB-A200
Hardware solutions / Routers & switches, VoIP, GSM, etc
SkyBridge BASIC MB-A130
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Seiko Solutions

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper following of a certificate's chain of trust. A remote attacker can eavesdrop on or alter the communication sent to the WebUI of the product.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SkyBridge MB-A200: 01.00.05

SkyBridge BASIC MB-A130: 1.4.1

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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 non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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