Input validation error in Mitsubishi Electric GOT products

1) Input validation error

EUVDB-ID: #VU58240

Risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-20601

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the system.

The vulnerability exists due to an information tampering issue. A remote attacker can send a specially crafted packet to rewrite the device value and adversely affect the system’s operation.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

GOT2000 GT27 model: All versions

GOT2000 GT25 model: All versions

GOT2000 GT23 model: All versions

GOT2000 GT21 model: All versions

GOT SIMPLE GS21 model: All versions

GT SoftGOT2000: All versions

External links

http://ics-cert.us-cert.gov/advisories/icsa-21-320-02

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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