Vulnerability identifier: #VU27676

Vulnerability risk: High

CVSSv3.1: 9.1 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2020-6081

CWE-ID: CWE-345

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CODESYS Control Runtime System Toolkit
Client/Desktop applications / Other client software

Vendor: CODESYS

Description

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

The vulnerability exists due to insufficient verification of data authenticity issue in the "PLC_Task" functionality. A remote authenticated attacker can send a specially crafted network request and execute arbitrary code on the target system.

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

Vulnerable software versions

CODESYS Control Runtime System Toolkit: 3.5.14.30

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External links
http://talosintelligence.com/vulnerability_reports/TALOS-2020-1003

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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