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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2408 Advisory (ICSA-17-264-01): Schneider Electric InduSoft Web Studio, InTouch Machine Edition 22 September 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: InduSoft Web Studio InTouch Machine Edition Publisher: ICS-CERT Operating System: Windows Impact/Access: Administrator Compromise -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-13997 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-17-264-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-17-264-01) Schneider Electric InduSoft Web Studio, InTouch Machine Edition Original release date: September 21, 2017 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/. CVSS v3 9.8 ATTENTION: Remotely exploitable/low skill level to exploit. Vendor: Schneider Electric Equipment: InduSoft Web Studio, InTouch Machine Edition Vulnerability: Missing Authentication for Critical Function AFFECTED PRODUCTS Schneider Electric reports that the vulnerability affects the following InduSoft Web Studio products: InduSoft Web Studio v8.0 SP2 or prior, and InTouch Machine Edition v8.0 SP2 or prior. IMPACT Successful exploitation of this vulnerability could allow an attacker to remotely execute arbitrary commands with high privileges. MITIGATION Schneider Electric recommends users using InduSoft Web Studio v8.0 SP2 or prior should upgrade and apply InduSoft Web Studio v8.0 SP2 Patch 1 as soon as possible. This patch can be found on the Schneider Electric InduSoft web site at the following location: http://download.indusoft.com/80.2.1/IWS80.2.1.zip (link is external) Schneider Electric recommends users using InTouch Machine Edition v8.0 SP2 or prior should upgrade and apply InTouch Machine Edition v8.0 SP2 Patch 1 as soon as possible. This patch can be found on Schneider Electrics Invensys web site at the following location (registration required): https://gcsresource.invensys.com/tracking/ConfirmDownload.aspx?id=22453 (link is external) For more information on this vulnerability and associated patch, please see InduSoft Security Bulletin LFSEC00000121 on the Schneider Electric cybersecurity web site: http://software.schneider-electric.com/support/cyber-security-updates/ (link is external) NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of this vulnerability. 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. 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 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. 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. No known public exploits specifically target this vulnerability. VULNERABILITY OVERVIEW MISSING AUTHENTICATION FOR CRITICAL FUNCTION CWE-306 InduSoft Web Studio provides the capability for an HMI client to trigger script execution on the server for the purposes of performing customized calculations or actions. A remote malicious entity could bypass the server authentication and trigger the execution of an arbitrary command. The command is executed under high privileges and could lead to a complete compromise of the server. CVE-2017-13997 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). RESEARCHER Aaron Portnoy, formerly of Exodus Intelligence, discovered and reported this vulnerability to ICS-CERT. BACKGROUND Critical Infrastructure Sectors: Critical Manufacturing, Energy, Healthcare and Public Health, Water and Wastewater Systems Countries/Areas Deployed: Worldwide Company Headquarters Location: Paris, France 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. 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. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. 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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