16 January 2015
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.0113 GE Proficy HMI/SCADA CIMPLICITY CimView Memory Access Violation 16 January 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: GE Proficy HMI/SCADA CIMPLICITY Publisher: US-CERT Operating System: Windows Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2014-2355 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-14-289-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-14-289-02) GE Proficy HMI/SCADA CIMPLICITY CimView Memory Access Violation Original release date: January 15, 2015 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/. OVERVIEW This advisory was originally posted to the NCCIC/US-CERT secure Portal library on October 16, 2014, and is being released to the NCCIC/ICS-CERT web site. Independent researcher Said Arfi has identified a memory access violation vulnerability in GEs CIMPLICITY CimView application. GE has produced an update that mitigates this vulnerability. AFFECTED PRODUCTS The following GE product is affected: Proficy HMI/SCADACIMPLICITY, Version 8.2 and prior. IMPACT If this vulnerability is exploited, it could allow an attacker to execute arbitrary commands on a system running the affected software. 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 GE is a US-based company that maintains offices in several countries around the world. The affected product, Proficy HMI/SCADACIMPLICITY, is a Client/Server-based human-machine interface/supervisory control and data acquisition (HMI/SCADA) application. According to GE, Proficy HMI/SCADACIMPLICITY is deployed across multiple industries. VULNERABILITY CHARACTERIZATION VULNERABILITY OVERVIEW IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER [a] A vulnerability exists in CIMPLICITY CimView and CIMPLICITY CimEdit components in the way they process information stored in the CIMPLICITY screen (.CIM) files. A specially crafted .CIM file could potentially lead to a memory access violation and arbitrary code execution. CVE-2014-2355 [b] has been assigned to this vulnerability. A CVSS v2 base score of 6.6 has been assigned; the CVSS vector string is (AV:L/AC:M/Au:S/C:C/I:C/A:C). [c] VULNERABILITY DETAILS EXPLOITABILITY This vulnerability is not exploitable remotely and cannot be exploited without user interaction. EXISTENCE OF EXPLOIT No known public exploits specifically target this vulnerability. DIFFICULITY An attacker with a moderate skill would be able to exploit this vulnerability. MITIGATION GE recommends that asset owners apply product updates to Proficy HMI/SCADACIMPLICITY Versions 8.1 and 8.2. The following product updates address the memory access violation vulnerability: Proficy HMI/SCADA CIMPLICITY 8.1 SIM 29 (DN4219) available at: http://support.ge-ip.com/support/index?page=dwchannel&id=DN4219 Proficy HMI/SCADACIMPLICITY 8.2 SIM 26 (DN4197) available at: http://support.ge-ip.com/support/index?page=dwchannel&id=DN4197 In cases where upgrading is not feasible, GE advises asset owners using CIMPLICITY versions prior to 8.1 to consider using the following recommendations that may mitigate or eliminate the impact of the vulnerability: Take steps to properly secure and protect stored CIMPLICITY screen files (.CIM). Avoid using .CIM files received from unknown sources. Avoid sending unprotected .CIM files over unencrypted networks or public Internet. Consider using a strong hashing algorithm to validate integrity of created .CIM files and ensure they have not been tampered with over time. 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 ICSCERT Technical Information Paper, ICS-TIP-12-146-01BTargeted 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. In addition, ICS-CERT recommends that users take the following measures to protect themselves from social engineering attacks: Do not click web links or open unsolicited attachments in email messages. Refer to Recognizing and Avoiding Email Scams [d] for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks [e] for more information on social engineering attacks. a. CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer, http://cwe.mitre.org/data/definitions/119.html, web site last accessed January 15, 2015. b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-2355, 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:L/AC:M/Au:S/C:C/I:C/A:C, web site last accessed January 15, 2015. d. Recognizing and Avoiding Email Scams, http://www.us-cert.gov/reading_room/emailscams_0905.pdf, web site last accessed January 15, 2015. e. National Cyber Alert System Cyber Security Tip ST04-014, http://www.us-cert.gov/cas/tips/ST04-014.html, web site last accessed January 15, 2015. Contact Information For any questions related to this report, please contact ICS-CERT at: Email: email@example.com 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 firstname.lastname@example.org 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: email@example.com 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 iQIVAwUBVLiXCRLndAQH1ShLAQKg/hAAruAkk0+loxG+q/N/VfxpWlh+6v9+UHOU w2h9HjTPeDAqgJ3kJEsTCgMN3IUPp72l9HqyozmSYsbpcylwnBdMwWYbwOqYutHT dPYFeNHtZhDtEmyDGYboiBi96dRForqmtEHUHYg9CiFzb/M3uhQJ6Frj2fMZpaae wIkKfa0c+RuSlOZc2LxW1jfAgzZj9hlJJXK0mos9byCl1z2X7CYV08UHdOcGhCeW TWJ/0Yxt2UEdVCVL6AvFr1vd9EZtYeRGg+vgydpWH7mdGX5b2NgQJuezvTPcYk92 5G6I6mVwxUxpVmgiBm7CM3zUfePyFj9e6DiKFYpCLX2yRrI0tLEFanGtDIwoTNpg YlcyS85yotD5Ro7P1CmuPM3ktPzViQVFTDsZcGa7HyoBC6nLNkslAem9/bBlSGx+ R/YdFp2SeIpcm9mjJTFP+vsnjUSa8C3Tje5ptDs+e6nFKEIbccHTfOcA+XyUmj6B +WhH2VBy1y8GFOWJW47xZ5cg4OzPNjT7Mpg+S+X1X/vuLMcg3irlm3BXcA8J3MC1 Vf4oL/YQjRpAYjDeeTSGythNPQR9AYCLsCd6KWMqdXuhuek29nuKUW1s5Kxyj1ov ifzFViFFi2kOTwk3bG56l7+/8ZIM0T6Mje9Hdf49PF/TdD5PYK8UCVv207i2VHJ0 EiDsCiDlako= =VTYx -----END PGP SIGNATURE-----