#VU21477 Improper check for unusual or exceptional conditions in Schneider Electric Hardware solutions


Published: 2019-10-02

Vulnerability identifier: #VU21477

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6819

CWE-ID: N/A

Exploitation vector: Network

Exploit availability: No

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

Vendor: Schneider Electric

Description

The vulnerability allows a remote attacker to cause a denial of service (DoS) condition.

The vulnerability exits due to the affected software does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the software. A remote attacker can send a specially crafted Modbus frame to the affected device and cause a denial of service condition.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Modicon Premium: All versions

Modicon Quantum: All versions

Modicon M580: 1.04 - 2.41

Modicon M340: All versions

External links
http://www.us-cert.gov/ics/advisories/icsa-19-183-01
http://www.schneider-electric.com/en/download/document/SEVD-2019-134-05/

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.


Latest bulletins with this vulnerability


Multiple vulnerabilities in Schneider Electric Modicon Controllers