Vulnerability identifier: #VU21492

Vulnerability risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-6806

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Modicon Quantum
Hardware solutions / Firmware
Modicon Premium
Hardware solutions / Firmware
Modicon M340
Hardware solutions / Firmware
Modicon M580
Hardware solutions / Firmware

Vendor: Schneider Electric

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to improper input validation. A remote attacker can gain unauthorized access to SNMP information when reading variables in the controller using Modbus.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Modicon Quantum: All versions

Modicon Premium: All versions

Modicon M340: All versions

Modicon M580: All versions

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External links
http://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/
http://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0769

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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 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.