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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2014.1229 Omron NS Series HMI Vulnerabilities 24 July 2014 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Omron NS Series HMI Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Cross-site Request Forgery -- Remote with User Interaction Cross-site Scripting -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2014-2370 CVE-2014-2369 Original Bulletin: http://ics-cert.us-cert.gov//advisories/ICSA-14-203-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-14-203-01) Omron NS Series HMI Vulnerabilities Original release date: July 22, 2014 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 Researcher Joel Sevilleja Febrer of S2 Grupo has identified multiple vulnerabilities in Omron Corporation's NS series human-machine interface (HMI) terminals. Omron Corporation has produced an update that mitigates these vulnerabilities. These vulnerabilities could be exploited remotely. AFFECTED PRODUCTS The following Omron Corporation products are affected: NS15 Version 8.1xx - 8.68x, NS12 Version 8.1xx - 8.68x, NS10 Version 8.1xx - 8.68x, NS8 Version 8.1xx - 8.68x, and NS5 Version 8.1xx - 8.68x. IMPACT Successful exploitation of these vulnerabilities could allow an attacker to modify device configuration and expose sensitive information. Impact to individual organizations depends on many factors that are unique to each organization. NCCIC/ICS-CERT recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. BACKGROUND Omron Corporation is an international company headquartered in Kyoto, Japan. The affected products are NS series HMI terminals. According to Omron Corporation, NS series HMI terminals are marketed globally; however, Omron states the vulnerabilities only affect their overseas market. The NS series HMI terminals are deployed across several sectors including Critical Manufacturing and Healthcare and Public Health. VULNERABILITY CHARACTERIZATION VULNERABILITY OVERVIEW CROSS-SITE REQUEST FORGERY[a] The web application receives a request from a client without adequately verifying that the request was intentionally sent. This could allow an attacker to execute commands thereby compromising the system and enabling modifications to the system's configuration. CVE-2014-2369[b] has been assigned to this vulnerability. A CVSS v2 base score of 4.6 has been assigned; the CVSS vector string is (AV:N/AC:H/Au:S/C:P/I:P/A:P).[c] CROSS-SITE SCRIPTING[d] The web application stores untrusted data that are read back into the application and included in dynamic content. CVE-2014-2370[e] has been assigned to this vulnerability. A CVSS v2 base score of 4.0 has been assigned; the CVSS vector string is (AV:N/AC:L/Au:S/C:N/I:P/A:N).[f] VULNERABILITY DETAILS EXPLOITABILITY These vulnerabilities could be exploited remotely. EXISTENCE OF EXPLOIT No known public exploits specifically target these vulnerabilities. DIFFICULTY An attacker with a high to moderate skill would be able to exploit these vulnerabilities MITIGATION Omron Corporation has produced update, Version 8.69x for Japan and Version 8.7x for other countries, that mitigates the identified vulnerabilities. The updates for the NS series of HMI terminals can be downloaded at the following locations: NS15 Software Update Version 8.7: http://industrial.omron.us/en/products/catalogue/automation_systems/hmi/scalable_hmi/ns15/default.html NS12 Software Update Version 8.7: http://industrial.omron.us/en/products/catalogue/automation_systems/hmi/scalable_hmi/ns12/default.html NS10 Software Update Version 8.7: http://industrial.omron.us/en/products/catalogue/automation_systems/hmi/scalable_hmi/ns10/default.html NS8 Software Update Version 8.7: http://industrial.omron.us/en/products/catalogue/automation_systems/hmi/scalable_hmi/ns8/default.html NS5 Software Update Version 8.7: http://industrial.omron.us/en/products/catalogue/automation_systems/hmi/scalable_hmi/ns5/default.html ICS-CERT encourages asset owners to take additional defensive measures to protect against this and other cybersecurity risks. 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 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. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. Additional mitigation guidance and recommended practices are publicly available in the ICS-CERT 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-352: Cross-Site Request Forgery (CSRF), http://cwe.mitre.org/data/definitions/352.html, web site last accessed July 22, 2014. b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-2369 , 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, http://nvd.nist.gov/cvss.cfm?version=2&vector=AV:N/AC:H/Au:S/C:P/I:P/A:P, web site last accessed July 22, 2014. d. CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), http://cwe.mitre.org/data/definitions/79.html, web site last accessed July 22, 2014. e. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-2370, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. f. CVSS Calculator, http://nvd.nist.gov/cvss.cfm?version=2&name=CVE-2013-0214&vector=AV:N/AC..., web site last accessed July 22, 2014. Contact Information For any questions related to this report, please contact ICS-CERT at: Email: ics-cert@hq.dhs.gov 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. 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. 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