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Pilz GmbH & Co. KG (Pilz) discontinued one version and removed some functionality in another to take care of a clear-text storage of sensitive information vulnerability in its PNOZmulti Configurator, according to a report with NCCIC.

Successful exploitation of this vulnerability could allow sensitive data to be read from the system.

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A safety circuit configuration tool, PNOZmulti Configurator all versions prior to 10.9 suffer from the vulnerability, discovered by Gjoko Krstikj of Applied Risk.

The vulnerability within the PNOZmulti Configurator directly impacts the PMI m107 diag HMI device.

Cyber Security

In the vulnerability, an authenticated attacker with local access to the system containing the PNOZmulti Configurator software can view sensitive credential data in clear-text. This sensitive data is applicable to only the PMI m107 diag HMI device. An attacker with access to this sensitive data and physical access to the PMI m107 diag can modify data on the HMI device.

CVE-2018-19009 is the case number assigned to this vulnerability, which has a CVSS v3 base score of 3.3.

The product sees use in multiple industry sectors and it sees action on a global basis.

No known public exploits specifically target this vulnerability. This vulnerability is not exploitable remotely. However, an attacker with low skill level could leverage the vulnerability.

Germany-based Pilz discontinued the PMI m107 diag HMI device and the function concerned ended up removed in PNOZmulti Configurator Version 10.9.

Pilz recommends the following mitigations depending on use of the PMI m107 diag HMI device:

Users that do not use the PMI m107 diag:
• Install Version 10.9 of the PNOZmulti Configurator software and delete the content of the directory C:\Program-Data\Pilz\PNOZmulti Configurator v\AppData\pmimicroconfig. (Replace with the used version) (Login Required).

Users that still use the PMI m107 diag:
• Continue to use the old PNOZmulti Configurator software version and secure the PC and the file system against unauthorized access.

For more information, click on the Pilz security advisory (Login Required).

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