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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1589 Advisory (ICSA-18-144-01) Schneider Electric Floating License Manager 25 May 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Schneider Electric Floating License Manager Publisher: ICS-CERT Operating System: Windows Impact/Access: Administrator Compromise -- Existing Account Denial of Service -- Remote/Unauthenticated Provide Misleading Information -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2017-5571 CVE-2016-10395 CVE-2016-2177 Reference: ASB-2017.0219 ASB-2016.0095 ESB-2017.2469 ESB-2017.1908 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-18-144-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-18-144-01) Original release date: May 24, 2018 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 CVSS v3 9.8 ATTENTION: Remotely exploitable/low skill level to exploit Vendor: Schneider Electric Equipment: Floating License Manager Vulnerabilities: Heap-based Buffer Overflow, Improper Restriction of Operations within the Bounds of a Memory Buffer, Open Redirect 2. RISK EVALUATION Successful exploitation of these vulnerabilities could cause a denial of service, allow arbitrary execution of code with system level privileges, or send users to arbitrary websites. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following products use the vulnerable Schneider Electric Floating License Manager, a license management platform: SCADA Expert Vijeo Citect / CitectSCADA Version 7.30, 7.40, CitectSCADA Version 2015, 2016, Vijeo Historian/CitectHistorian Version 4.40, 4.50, CitectHistorian Version 2016, Citect Anywhere, PlantStruxure PES V4.3 SP1 and prior, and EcoStruxure Modicon Builder V3.0 and prior. The following products are only affected by CVE-2016-10395: EcoStruxure Power Monitoring Expert 8.2 (Standard, DC, HC Editions), StruxureWare Power Monitoring Expert 8.1 (Standard, DC, HC Editions), StruxureWare Power Monitoring Expert 8.0 (Standard, DC, HC, Buildings Editions), StruxureWare Power Monitoring Expert 7.2.x, Energy Expert 1.x (formerly Power Manager), and EcoStruxure Power SCADA Operations 8.x (formerly PowerSCADA Expert) (Only with Advanced Reports and Dashboards Module). 3.2 VULNERABILITY OVERVIEW 3.2.1 HEAP-BASED BUFFER OVERFLOW CWE-122 OpenSSL incorrectly uses pointer arithmetic for heap-buffer boundary checks, which may allow denial of service attacks or other unspecified behavior. CVE-2016-2177 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). 3.2.2 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119 This vulnerability can be exploited to cause an out-of-bounds memory read access, which may allow remote code execution with system privileges. CVE-2016-10395 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). 3.2.3 URL REDIRECTION TO UNTRUSTED SITE ('OPEN REDIRECT') CWE-601 An open redirect vulnerability has been identified, which may allow remote attackers to redirect users to arbitrary websites for phishing attacks. CVE-2017-5571 has been assigned to this vulnerability. A CVSS v3 base score of 6.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N). 3.3 BACKGROUND o Critical Infrastructure Sectors: Commercial Facilities, Energy, Food and Agriculture, Government Facilities, Transportation Systems, Water and Wastewater Systems o Countries/Areas Deployed: Worldwide o Company Headquarters Location: France 3.4 RESEARCHER Schneider Electric reported these vulnerabilities to NCCIC. 4. MITIGATIONS Schneider Electric recommends that users of affected Citect and PlantStruxure products download and install the new version of the software located at: https://www.citect.schneider-electric.com/documents/downloads/Floating_License_Manager_v2.1.0.0.zip Users using EcoStruxure Modicon Builder V3.0 are recommended to download and use the new version (V3.1) located at: https://partner.schneider-electric.com/partners/Menu/MyPartnership (login required) StructureWare 7.2.x users should upgrade to Version 7.2.2 and apply the floating licensing manager (FLM) patch from the following location: https://schneider-electric.box.com/s/n2fh1ym594pqvl87kf0zjsigamuryrje EcoStruxure/StruxureWare Power Monitoring Expert and Power SCADA Operations users need to upgrade to Version 8.2. Energy Expert users need to upgrade to Version 1.3. Once these are upgraded apply the Cumulative Update (CU) 2 located at: https://schneider-electric.box.com/s/kkdikodcksjj1dznqy68ko0j28wct7vb Schneider Electric has also released security notifications which contain further details and upgrade instructions at the following links: https://www.citect.schneider-electric.com/safety-and-security-central/36-security-notifications/9134-vulnerabilities-within-schneider-electric-floating-license-manager https://www.schneider-electric.com/en/download/document/SEVD-2018-137-01/ https://www.schneider-electric.com/en/download/document/SEVD-2018-144-01/ https://www.schneider-electric.com/en/download/document/SEVD-2018-046-01/ NCCIC recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 these vulnerabilities. - --------------------------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: 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 iQIVAwUBWweTdGaOgq3Tt24GAQhcZw/+KcaAVJ6uhV6j2OFKCQpCQt8qfrcbdNM4 9Z1gD367rS4dA4hQ8T+4fV4K+WMcU/azs4XEgdetlxAmzAbY1jI9+Z/tHwoQQPfp qhCOrSQx0OgxRpU0P66KsPEV53w0eymtU0CMyKRmUmyufjoKsQy5vq68Kwk+sGZn D4hQQd6YfGtGMveaYyG795jS9T0zmjxW6VDqwp1I7oOohXHimy31YdP6yLluX/gn ikatvTU60qBgjZpIT51r6KXahrYfqwzk013irtGGqkcQhOY/7ETf+TnF8iROwOQg EiwhBPp+9hlmvDghAXf9nIMlN53mo5k3X1L94nhlyW/2TcHnX19b6Hrhrq70K1tD uFBZjrSDkfdMU+0houMprrkpKI39wVk4QBC047jBUBbBGF4npt26uRpKjQehxZez SDQVp+zJK5timzPxXP+iNmZq7CSn15u2oQFPU/w7qu4j8pN6JCk0xIEuZXpVC6K7 xNdLBfw2JvdykPceOXtdSVWIJfHezFu3DVyIqdaabeU+tV/q1LQXDNTUrUEIt63P gyAMfzQYAX07BdyS3CmeuW+hYxiWlWsOUrGTy/ONs1Uj0l+ww2aAyUX78GayOgXt j7plPDqlGnq4dVAktxXPE2YaVdrayUacxFnM6lNtS8h/NalQPLOJle47/6haB8aR pVpUGv2rzF4= =gyO0 -----END PGP SIGNATURE-----