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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1483 Multiple vulnerabilities identified in Trihedral VTScada 14 June 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Trihedral VTScada Publisher: ICS-CERT Operating System: Windows Impact/Access: Access Privileged Data -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Cross-site Scripting -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2017-6053 CVE-2017-6045 CVE-2017-6043 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-17-164-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-17-164-01) Trihedral VTScada Original release date: June 13, 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 7.5 ATTENTION: Remotely exploitable/low skill level to exploit. Vendor: Trihedral Equipment: VTScada Vulnerability: Resource Consumption, Cross-Site Scripting, Information Exposure AFFECTED PRODUCTS The following versions of VTScada, an HMI SCADA software, are affected: VTScada Versions prior to 11.2.26 IMPACT Successful exploitation of these vulnerabilities could result in uncontrolled resource consumption, arbitrary code execution, or information exposure. MITIGATION Trihedral recommends that users of an affected version update to the latest version, v11.2.26. The update can be found at the following location: ftp://ftp.trihedral.com/VTS/VTScada 11.2 Versions/VTScada 11.2.26.zip Help file notes for upgrading VTScada/VTS can be found at: https://www.trihedral.com/help/Content/Op_Welcome/Wel_UpgradeNotes.htm NCCIC/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. 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 UNCONTROLLED RESOURCE CONSUMPTION CWE-400 The client does not properly validate the input or limit the amount of resources that are utilized by an attacker, which can be used to consume more resources than are available. CVE-2017-6043 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). CROSS-SITE SCRIPTING CWE-79 A cross-site scripting vulnerability may allow JavaScript code supplied by the attacker to execute within the user's browser. CVE-2017-6053 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N). INFORMATION EXPOSURE CWE-548 Some files are exposed within the web server application to unauthenticated users. These files may contain sensitive configuration information. CVE-2017-6045 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N). RESEARCHER Karn Ganeshen discovered the vulnerabilities and has tested the patch. BACKGROUND Critical Infrastructure Sectors: Chemical, Critical Manufacturing, Communications, Energy, Food and Agriculture, Transportation Systems, Water and Wastewater Systems Countries/Areas Deployed: North America, Europe Company Headquarters Location: Bedford, Nova Scotia, Canada 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. 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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