title: OSIsoft PI Vision
description: PI Vision could disclose information to a user with insufficient privileges for an AF attribute that is the child of another attribute and is configured as a Limits property.
problem types: CWE-863 Incorrect Authorization
affected:
{
product: PI Vision
vendor: OSIsoft
versions:
lessThanOrEqual: 2021, status: affected, version: All versions, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 3.1
baseSeverity: LOW
confidentialityImpact: LOW
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
version: 3.1
]
workarounds: OSIsoft recommends upgrading to PI vision 2021. Information can be found in the OSIsoft PI Vision security bulletin (registration required).
OSIsoft recommends users apply the following workarounds for PI Vision to help reduce risk:
Configure Publisher and Explorer roles in PI Vision User Access Levels to restrict which users can create or modify displays.
Remove any Limits properties from AF child attributes using PI System Explorer or a bulk editing tool.
OSIsoft recommends the following defense measures to lower the impact of exploitation for PI Vision:
Use a modern web browser such as Microsoft Edge, Google Chrome, or Mozilla FireFox. Do not use Microsoft Internet Explorer.
If upgrade is not an option, administrators should regularly audit the AF hierarchy to ensure there are no unexpected or unknown elements, attributes, or attribute properties. It is recommended security on elements in AF be configured and enforced in addition to configuring PI point security.
Potential unauthorized viewing of PI System data due to this issue is limited to permissions granted to the PI Vision Application Pool Identity.  Configure a dedicated identity mapping for PI Vision servers and manage permissions in accordance with a data classification policy.
See OSIsoft customer portal knowledge article for additional details and associated security updates (registration required).