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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.1516 OSIsoft PI SQL Data Access Server and AF Server Input Validation Vulnerabilities 15 June 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: OSIsoft PI SQL Data Access Server OSIsoft PI AF Server Publisher: ICS-CERT Operating System: Windows Impact/Access: Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2016-4530 CVE-2016-4518 Original Bulletin: http://ics-cert.us-cert.gov/advisories/ICSA-16-166-01 http://ics-cert.us-cert.gov/advisories/ICSA-16-166-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-16-166-01) OSIsoft PI SQL Data Access Server Input Validation Vulnerability Original release date: June 14, 2016 Share 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/. OVERVIEW OSIsoft has identified an input validation vulnerability in its own PI SQL Data Access Server. OSIsoft has produced a new version of PI SQL Data Access Server (OLE DB) 2016 (1.5) to address this issue. This vulnerability could be exploited remotely. AFFECTED PRODUCTS Affected versions of PI SQL Data Access Server prior to the 2016 (1.5) release are included only with: PI JDBC Driver 2015 (1.4.1.404) and earlier, and PI ODBC Driver 2015 (3.5.403) and earlier. IMPACT An attacker who successfully exploits this vulnerability could cause the PI SQL Data Access Server to stop responding in a way that may cause an incomplete update resulting in partial data loss. Impact to individual organizations depends on many factors that are unique to each organization. NCCIC/ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation. BACKGROUND OSIsoft is a US-based company that maintains headquarters in San Leandro, California, with global operations. According to OSIsoft, the PI SQL Data Access Server is a component that supports the PI SQL family of drivers such as PI ODBC and PI JDBC. While these drivers implement a certain industry standard or API and build the interface to third-party clients or applications, PI SQL Data Access Server is responsible for executing the queries. PI SQL Data Access Server supports connections and queries to the PI Data Archive and PI AF Server. PI SQL Data Access Server is a layered application that is not installed with every PI System implementation. PI Asset Framework is deployed across several critical infrastructure sectors. These products are used worldwide. VULNERABILITY CHARACTERIZATION VULNERABILITY OVERVIEW IMPROPER INPUT VALIDATION [a] A denial-of-service impact occurs when the PI SQL Data Access Server improperly handles input while processing a message from an authenticated connection. CVE-2016-4530 [b] has been assigned to this vulnerability. The issue was rated by OSIsoft using the Common Vulnerability Scoring System (CVSS) [c] as Medium (CVSS: 4.0-6.9) VULNERABILITY DETAILS EXPLOITABILITY This vulnerability could be exploited remotely. EXISTENCE OF EXPLOIT No known public exploits specifically target this vulnerability. DIFFICULTY An attacker with a low skill would be able to exploit this vulnerability. MITIGATION OSIsoft recommends upgrading to PI SQL Data Access Server (OLE DB) 2016 (1.5) to address this issue. OSIsoft recommends that users use a host-based firewall to limit access to Ports 5461 and 5462 only to trusted workstations and PI SQL client products such as: PI JDBC Driver, and PI ODBC Driver. They also recommend that access to PI SQL Data Access Server be limited to only those users who need it through user rights assignment security policy. For more information on this vulnerability, please refer to OSIsofts Security Bulletin on this topic that was released on its web site on May 10, 2016: https://techsupport.osisoft.com/Troubleshooting/PI-System-Cyber-Security (link is external) ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should: Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet. Locate control system networks and remote devices behind firewalls, and isolate them from the business network. 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. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. ICS-CERT also provides a section for control systems security recommended practices on the ICS-CERT web page at: http://ics-cert.us-cert.gov/content/recommended-practices. 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 in the ICSCERT Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site (http://ics-cert.us-cert.gov/). Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to ICS-CERT for tracking and correlation against other incidents. a. CWE-20: Improper Input Validation, http://cwe.mitre.org/data/definitions/20.html, web site last accessed June 14, 2016. b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4530, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. c. CVSS Calculator, https://nvd.nist.gov/cvss.cfm?adv&calculator&version=2, web site last accessed June 14, 2016. Contact Information For any questions related to this report, please contact ICS-CERT at: Email: ics-cert@hq.dhs.gov (link sends e-mail) Toll Free: 1-877-776-7585 International Callers: (208) 526-0900 For industrial control systems security information and incident reporting: http://ics-cert.us-cert.gov ICS-CERT continuously strives to improve its products and services. You can help by choosing one of the links below to provide feedback about this product. - --- Advisory (ICSA-16-166-02) OSIsoft PI AF Server Input Validation Vulnerability Original release date: June 14, 2016 Share 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/. OVERVIEW OSIsoft has identified an input validation vulnerability in its own PI AF Server. OSIsoft has produced a new version of PI AF Server 2016 to address this issue. This vulnerability could be exploited remotely. AFFECTED PRODUCTS OSIsoft reports that the vulnerability affects the following products: PI AF Server prior to 2016, versions prior to 2.8.0 The issue exists in a component that ships with the PI AF Server. This component is used by other OSIsoft applications but is not normally used by user applications or users of the PI AF SDK or PI System Explorer. This component can be safely disabled following defensive measures without impacting other PI AF Server functionality with the condition that none of the listed OSIsoft applications are also being used. IMPACT An attacker who successfully exploits this vulnerability could cause the PI AF Server to stop responding. Impact to individual organizations depends on many factors that are unique to each organization. NCCIC/ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation. BACKGROUND OSIsoft is a US-based company that maintains headquarters in San Leandro, California, with global operations. According to OSIsoft, the PI AF Server is a repository for asset-centric models, hierarchies, objects, and equipment. The PI System uses this core server technology to provide a framework for organizing and analyzing data. According to OSIsoft, PI AF is deployed across several critical infrastructure sectors. OSIsoft estimates that these products are used worldwide. VULNERABILITY CHARACTERIZATION VULNERABILITY OVERVIEW IMPROPER INPUT VALIDATION [a] A denial-of-service impact occurs when the PI AF Server improperly handles input while processing a message from an authenticated connection. CVE-2016-4518 [b] has been assigned to this vulnerability. The issue was rated by OSIsoft using the Common Vulnerability Scoring System (CVSS) [c] as Medium (CVSS: 4.0-6.9). VULNERABILITY DETAILS EXPLOITABILITY This vulnerability could be exploited remotely. EXISTENCE OF EXPLOIT No known public exploits specifically target this vulnerability. DIFFICULTY An attacker with a low skill would be able to exploit this vulnerability. MITIGATION OSIsoft recommends upgrading to PI AF Server 2016 to address this issue. OSIsoft recommends using a host-based firewall to limit access to Port 5459 to only trusted workstations using PI SQL products such as PI OLEDB Enterprise. All versions of PI WebParts and PI Web Services will use PI OLEDB Enterprise for data access if it is configured as a provider for a relational data set. The following products access the PI AF Server 2016 over Port 5459 for search functionality: PI WebParts 2010 and earlier, and PI Coresight 2013 and earlier. OSIsoft also recommends that access to the PI AF Server should be limited to only those users who need it. For more information on this vulnerability, please refer to OSIsofts Security Bulletin AL00301 on this topic, which was released on OSIsofts web site on May 10, 2016: https://techsupport.osisoft.com/Troubleshooting/PI-System-Cyber-Security (link is external) ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should: Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet. Locate control system networks and remote devices behind firewalls, and isolate them from the business network. 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. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. ICS-CERT also provides a section for control systems security recommended practices on the ICS-CERT web page at: http://ics-cert.us-cert.gov/content/recommended-practices. 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 in the ICSCERT Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site (http://ics-cert.us-cert.gov/). Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to ICS-CERT for tracking and correlation against other incidents. a. CWE-20: Improper Input Validation, http://cwe.mitre.org/data/definitions/20.html, web site last accessed June 14, 2016. b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4518 , NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. c. CVSS Calculator, https://nvd.nist.gov/cvss.cfm?adv&calculator&version=2, web site last accessed June 14, 2016. Contact Information For any questions related to this report, please contact ICS-CERT at: Email: ics-cert@hq.dhs.gov (link sends e-mail) Toll Free: 1-877-776-7585 International Callers: (208) 526-0900 For industrial control systems security information and incident reporting: http://ics-cert.us-cert.gov ICS-CERT continuously strives to improve its products and services. You can help by choosing one of the links below to provide feedback about this product. - --------------------------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. 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If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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). 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