Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2014.2279 Elipse SCADA DNP3 Denial of Service 3 December 2014 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Elipse SCADA Elipse E3 Elipse Power systems Publisher: ICS-CERT Operating System: Windows Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2014-5429 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-14-303-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-14-303-02) Elipse SCADA DNP3 Denial of Service Original release date: December 02, 2014 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 This advisory was originally posted to the US-CERT secure Portal library on October 30, 2014, and is being released to the NCCIC/ICS-CERT web site Independent researchers Adam Crain and Chris Sistrunk have identified a DNP3 denial-of-service vulnerability in the Elipse SCADA application. Elipse has produced a new version of the DNP3 driver that mitigates this vulnerability. This vulnerability could be exploited remotely. AFFECTED PRODUCTS The following Elipse products are affected: Elipse SCADA 2.29 build 141 and prior w/ DNP3 driver, Elipse E3 versions V1.0 to V4.6, Elipse Power systems Versions V1.0 to V4.6, and DNP 3.0 Master v3.02 and prior. IMPACT An attacker exploiting this vulnerability can cause the process to be disabled until it is manually restarted. Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation. BACKGROUND Elipse is a Brazil-based company that has business partners in several countries around the world, including the US, Germany, India, Russia, Sweden, Argentina, and Chile. The affected products, Elipse SCADA, are web-based SCADA systems. According to Elipse, these products are deployed across several sectors including Critical Manufacturing, Energy, Water and Wastewater Systems, and others. Elipse estimates that these products are used worldwide. VULNERABILITY CHARACTERIZATION VULNERABILITY OVERVIEW RESOURCE EXHAUSTION[a] Elipse investigated the notification, identifying a vulnerability in DNP Master Driver V3.02, which could be reproduced in Elipse SCADA, Elipse E3, and Elipse Power systems. The attack consists of sending data packets with formatting errors, causing a process failure. When the exploit is used against Elipse E3 and Elipse Power systems, the unavailability is temporary (about 30 seconds), and when used against Elipse SCADA, the system becomes unavailable until a system restart. CVE-2014-5429[b] has been assigned to this vulnerability. A CVSS v2 base score of 5.0 has been assigned; the CVSS vector string is (AV:N/AC:L/Au:N/C:N/I:N/A:P).[c] VULNERABILITY DETAILS EXPLOITABILITY This vulnerability could be exploited remotely. EXISTENCE OF EXPLOIT No known public exploits specifically target this vulnerability. DIFFICULTY An attacker with a low skill would be able to exploit this vulnerability. MITIGATION Elipse has created a new version of DNP Master Driver (V.4.0.21) that fixes this problem. Elipse has also made this new version available on October 27, 2014, on its web site at the following location: http://www.elipse.com.br/eng/download_drivers.aspx Asset owners using affected products should contact their local sales representative or Elipse customer service for more information. 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 (www.ics-cert.org). 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-400: CWE-400: Uncontrolled Resource Consumption ('Resource Exhaustion'),http://cwe.mitre.org/data/definitions/400.html, web site last accessed October 30, 2014. b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-5429, 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:L/Au:N/C:N/I:N/A:P, web site last accessed October 30, 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. 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBVH6i6BLndAQH1ShLAQKa6A/+ItBk5nZZ6RBBRFq8Bmq5gg+x4JmUIPBH 6YFS3OJZa3LVTBsDrCIEL+uWMCPvQoHlSbqMz8z3ELzAgBtpxLMK3nbi/tnKP0Mz xl/Fo5q5aS2DS9rk7dR0aHBIq62GpEUgE7JiCk3xlLw0E8fpm7E70QbhRYNBRqx3 PKOyzRmE3lc9AaMHkigJIIgSTL4vS7gYnmoyJYTPD5G+EKYqIPniJ45YoTLvzi+q +5uyiotxwMcyesBfFYM/5M+IezXIhbUyjrrCAEDVCCnFgrNrd5cFfNmDpAw72Z7M tWPN4vFHutxbshgvkOacJOzxugt1MfAZ5Xgd6lQaQDWg9pYEQSF9DjJqW9By8xXv Wwl6HMCN+j9cC139nFfHpOOOlLbDUK23mzEvxNJ33BapmMKLKAe4r6AB7HGZugWi KY3cyWL/5Q/9TypnsQnKh8AtXqfmC0ZaI+3so6Q+nS7AufJZnB9F+97+GLOf27B7 wyDIEHCsPkKL5fOMeBfGxHzaOOsyttVqa1ieefluR6ZcO1x6FhwqX3EXqYReoWkO RupwT8PSLGaasuA7kNR2WiyXwq27tqIiekI65A1phVJp2OkDuyUf7YIrlP54mJn/ MP3qB3j0NUXqc3ipJ5C56CKHog+qIhkiqDnbSOhQZSFsLVxfcyNqtff6Nawwbegt Qk+6cOrnaCE= =wNVu -----END PGP SIGNATURE-----