Vulnerability identifier: #VU26605

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19101

CWE-ID: CWE-325

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Automation Studio
Other software / Other software solutions

Vendor: B&R Industrial Automation GmbH

Description

The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.

The vulnerability exists due to the missing secure communication definition and an incomplete TLS validation in the upgrade service. A remote attacker can perform MitM attacks via the B&R upgrade server. 

This vulnerability affects the following versions:

Automation Studio, Versions 4.0.x

Automation Studio, Versions 4.1.x

Automation Studio, Versions 4.2.x

Automation Studio, versions prior to 4.3.11SP

Automation Studio, versions prior to 4.4.9SP

Automation Studio, versions prior to 4.5.4SP

Automation Studio, versions prior to 4.6.3SP

Automation Studio, versions prior to 4.7.2

Automation Studio, versions prior to 4.8.1

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Automation Studio: All versions

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External links
http://ics-cert.us-cert.gov/advisories/icsa-20-093-01
http://www.br-automation.com/en-gb/service/cyber-security/

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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.