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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1751 Advisory (ICSA-18-163-01) Schneider Electric U.motion Builder 13 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Schneider Electric U.motion Builder Publisher: ICS-CERT Operating System: Virtualisation Network Appliance Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Cross-site Scripting -- Remote with User Interaction Access Confidential Data -- Remote/Unauthenticated Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-7787 CVE-2018-7786 CVE-2018-7785 CVE-2018-7784 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-18-163-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-18-163-01) Schneider Electric U.motion Builder Original release date: June 12, 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 o CVSS v3 10.0 o ATTENTION: Exploitable remotely/low skill level to exploit o Vendor: Schneider Electric o Equipment: U.motion Builder o Vulnerabilities: Command Injection, Cross-site Scripting, and Improper Input Validation 3. RISK EVALUATION Successful exploitation of these vulnerabilities could allow remote code execution. 4. TECHNICAL DETAILS 4.1 AFFECTED PRODUCTS The following U.motion Builder Software versions are affected: o U.motion Builder versions prior to 1.3.4 4.2 VULNERABILITY OVERVIEW 3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121 An input string may be evaluated as a command by the application. An attacker could exploit this to execute code, read the stack, or cause a segmentation fault in the running application. CVE-2018-7784 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). 3.2.2 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN OS COMMAND (OS COMMAND INJECTION) CWE-78 A remote command injection allows authentication bypass. CVE-2018-7785 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). 3.2.3 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION (CROSS-SITE SCRIPTING) CWE-79 A cross-site scripting (XSS) vulnerability exists, which could allow injection of malicious scripts. CVE-2018-7786 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). 3.2.4 IMPROPER INPUT VALIDATION CWE-20 This vulnerability is due to improper validation of input of context parameter in HTTP GET request, which could allow the disclosure of sensitive information. CVE-2018-7787 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N). 4.3 BACKGROUND o Critical Infrastructure Sectors: Commercial Facilities, Critical Manufacturing, and Energy o Countries/Areas Deployed: United States, Europe, and Asia o Company Headquarters Location: Paris, France 4.4 RESEARCHER Wei Gao of Ixia and bigric3@360A-TEAM reported these vulnerabilities to NCCIC. 5. MITIGATIONS Schneider Electric has released firmware update Version 1.3.4, which includes fixes for these vulnerabilities. It is highly recommended that U.motion Builder users apply the patch in a timely manner. The firmware is available for download at: https://www.schneider-electric.com/en/download/document/Umotion_Server_update/ Schneider Electric's security notice SEVD-2018-151-01 is available at the following location: https://www.schneider-electric.com/en/download/document/SEVD-2018-151-01/ NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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. Contact Information For any questions related to this report, please contact the NCCIC at: Email: NCCICCUSTOMERSERVICE@hq.dhs.gov Toll Free: 1-888-282-0870 For industrial control systems cybersecurity information: http://ics-cert.us-cert.gov or incident reporting: https://ics-cert.us-cert.gov/Report-Incident? The NCCIC 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: 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 iQIVAwUBWyCPoWaOgq3Tt24GAQjFCA/+KcBj4IFLHuZh2BJT/D+lZTW9oJdYlvql erV2an4lCWF4AyTO3/rB8oFprO5eSReS/lLfvUpd3Yi0xy9XjSo1VgGC6v7n1KB/ yMLvtM+4jlIQR7H6LtWQ25uPqoQXp8QNtP8WVXt9vsLxEkdYdsikrQEye9pFuj0N tK6pmouqNnUBEuXH6zwD7SJNVdYt4hNBiJsmyIV2ATDpuPWajtTq4In9vTrI5PFN J7tKLJIsCkzcXgDh/+DrZNHuSptsNdgOFRXEEWvlf3PP21MxOUigWnNf9Y77cvtT Sk46Fo8wWeSfASJXe67N4z+T4yHycirhrpwbjG6v3/LGGLdySmnKyI4guLiIjww7 gl1Gsztb2YJKFQRJukPnMnuFoeLI8Rfr4TcokR5x8JvqmK5e1mRZPI2oG4b7daxd 1jefR4EeNQ071eE100lAt89d6CXKI3ilIz2BeaHvnnBIrcjAFXaEAceeePq9dPDv OyAgyn/F/2+rP5lU/4VHCu/DppNHDlffwZB2gqxRwmnkt+2rY+LLrq+HRxT1WAtP DVVYrdiPcmX053SxNYyXxjLTKxLAk6vdOIB72Ucq/HGNdfWwPI6FwDZAMh3V/5LW Tsd7LiAuCB1TiOeD/tr2aA9ypckAqhZB+kwXa18n7xOkf2LlGNxq4ofP5ONt/3lh O5JwWHWLGaA= =izxd -----END PGP SIGNATURE-----