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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0441 Advisory (ICSA-19-043-01) OSIsoft PI Vision 13 February 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: OSIsoft PI Vision Publisher: ICS-CERT Operating System: Windows Impact/Access: Cross-site Scripting -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-19006 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-19-043-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-19-043-01) OSIsoft PI Vision Original release date: February 12, 2019 Legal Notice All information products included in http://ics-cert.us-cert.gov are provided"as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see http://www.us-cert.gov/tlp/ . 1. EXECUTIVE SUMMARY o CVSS v4.8 o ATTENTION: Low skill level to exploit o Vendor: OSIsoft o Equipment: PI Vision o Vulnerability: Cross-site Scripting 2. RISK EVALUATION Successful exploitation of this vulnerability 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. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of PI Vision, a process visualization tool are affected: o PI Vision 2017, and o PI Vision 2017 R2 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING') CWE-79 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. CVE-2018-19006 has been assigned to this vulnerability. A CVSS v3 base score of 4.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:R/S:C/ C:L/I:L/A:N ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Multiple o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: United States 3.4 RESEARCHER OSIsoft reported this vulnerability to NCCIC. 4. MITIGATIONS OSIsoft recommends users upgrade to PI Vision 2017 R2 SP1 to address this issue. This update can be 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, please see KB01631 - Security Tips for PI Vision using the link below: https://techsupport.osisoft.com/Troubleshooting/KB/KB01631/ For more information on this vulnerability, please refer to OSIsoft's Security Bulletin AL00344 using the link below: https://techsupport.osisoft.com/Troubleshooting/Alerts/AL00344 NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should: o Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet . o Locate control system networks and remote devices behind firewalls, and isolate them from the business network. o When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that VPN is only as secure as the connected devices. NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies . Additional mitigation guidance and recommended practices are publicly available on the ICS-CERT website in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies . Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation against other incidents. No known public exploits specifically target this vulnerability. This vulnerability is not exploitable remotely. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. 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Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXGN0GGaOgq3Tt24GAQiDDA/+NRdY00w9YjtAudmVVONQ8lRizjWB1JJq mufX5TPsOAejTfYO497oT1k+mmZsyNdUo3PIQc3HKA4Dnis45eRmC5z5BHRmzVDV NF6BX3H3A3NxETNBzcJODtCQwZqWAYn3aLugItiZJyAmwOvMppBUjy5UpZVuL1zc 1cb4vOnhW3zAXI4Z0jRhHSg9orNZJkMAuzeYbyjPqUYmuIE6Mv+KS3Kjib9oZLSs O8tVBhCnDNTUkhKiYszvcwzoYHqTJ3EiFef/GD5j1zE6NP+2fzhASJhTKMRejGhf s1xhxQC7nMVpqUgqe5zgbzrzgl5vLwmbzxyZP9lT9cIKdDNcFBhhloUVWME/6ePx ZJ93BOOdCVkccwXxH3r9Ugx0ZYnDFXaFYoLtgmDZzUJm2bdO/3oo/kWag5zHwuAh 9VgBa1jpdvvLMeEaw3g9t8UpCCI+7mRBeGdwc5Hc0PxoT9yZvYRhn53ZSoRpMFkN tG+LYdg8BV2yAGU6YbyWFT/CdQOQKPueZmHh5pbsuo8CuGjhFdC/YFbehfaUVX2u aX35a2pfy/PXrgAIQGj908Wp91UTOgCGkGzDvwmZXvJJjY44Me68Xjh+hjDo8BqK 3AAgSn3QhsLgBGEawBA83EKir2S3PV3idzmCP/YTQQ54/qy56uuXXpdpkqotw3qd zkYcgcWnO+Q= =n2qb -----END PGP SIGNATURE-----