Command Injection in Moxa UC Series

1) Command Injection

EUVDB-ID: #VU69415

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-3086

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary commands on the target system.

The vulnerability exists due to improper input validation. A local user 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 update from vendor's website.

Vulnerable software versions

UC-2100-W: 1.3 - 1.5

UC-2100: 1.3 - 1.5

UC-3100: 1.2 - 2.0

UC-5100: 1.2

UC-8100: 1.2 - 1.3

UC-8100A-ME-T: 1.0 - 1.1

UC-8200: 1.0 - 2.4

UC-8410A: 2.2

UC-8540: 1.0 - 1.2

UC-8580: 1.1

External links

http://www.moxa.com/en/support/product-support/security-advisory/uc-series-improper-physical-access-control-vulnerability

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

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

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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