Vulnerability identifier: #VU97310

Vulnerability risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-5702

CWE-ID: CWE-425

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Vitogate 300
Hardware solutions / Firmware

Vendor: Viessmann

Description

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

The vulnerability exists due to an error in the /cgi-bin/ file. A remote attacker on the local network can gain access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vitogate 300: 2.1.3.0

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External links
http://github.com/GTA12138/vul/blob/main/Viessmann/Vitogate300_Document_Unauthorized_Access.md
http://vuldb.com/?ctiid.243140
http://vuldb.com/?id.243140
http://www.cisa.gov/news-events/ics-advisories/icsa-24-254-01

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.