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OSIsoft has an upgrade available to address a cross-site scripting vulnerability in its PI Vision, according to a report with NCCIC.

Successful exploitation of this vulnerability, which OSIsoft self-reported, could allow an attacker to read and modify the contents of the PI Vision web page and data related to the PI Vision application in the victim’s browser.

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A process visualization tool, the following versions of PI Vision suffer from the issue:
• PI Vision 2017
• PI Vision 2017 R2

In the vulnerability, the application contains a cross-site scripting vulnerability where displays that reference AF elements and attributes containing JavaScript are affected. This vulnerability requires the ability of authorized AF users to store JavaScript in AF elements and attributes.

Cyber Security

CVE-2018-19006 is the case number assigned to this vulnerability, which has a CVSS v3 base score of 4.8.

The product sees action in multiple sectors in the manufacturing automation sector. It also 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.

OSIsoft recommends users upgrade to PI Vision 2017 R2 SP1 to address this issue. This update can end up obtained directly from OSIsoft.

Additionally, OSIsoft recommends the following defensive measures. All access to the AF Server is protected by Windows authentication, so the modifications to AF data items required by an attacker would have to be performed by a user with write access to either the AF hierarchy or templates. Periodic review of AF Server permissions to ensure only intended users are granted write access to elements, element templates, and event frame templates is a good practice to reduce exposure.

Similarly, which data items are available to PI Vision is controlled by the PI Vision administrators through the administrative site. Only add data sources to PI Vision that you can verify as legitimate with appropriate access control configured.

For additional guidance on web security for PI Vision, see KB01631 – Security Tips for PI Vision.

For more information on this vulnerability, please refer to OSIsoft’s Security Bulletin AL00344.

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