Vulnerability identifier: #VU97312

Vulnerability risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-45852

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Vitogate 300
Hardware solutions / Firmware

Vendor: Viessmann

Description

The vulnerability allows a remote attacker to execute arbitrary commands on the target system.

The vulnerability exists due to improper input validation in the /cgi-bin/vitogate.cgi file. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vitogate 300: 2.1.3.0

---

External links
http://connectivity.viessmann.com/gb/mp-fp/vitogate/vitogate-300-bn-mb.html
http://github.com/Push3AX/vul/blob/main/viessmann/Vitogate300_RCE.md
http://www.cisa.gov/news-events/ics-advisories/icsa-24-254-01

---

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. However, proof of concept for this vulnerability is available.