Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2013.1124 OSIsoft Multiple Vulnerabilities 16 August 2013 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IEEE C37.118 Publisher: ICS-CERT Operating System: Windows Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2013-2801 CVE-2013-2800 Original Bulletin: http://ics-cert.us-cert.gov/advisories/ICSA-13-225-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-13-225-02) OSIsoft Multiple Vulnerabilities Original release date: August 13, 2013 OVERVIEW OSIsoft has identified multiple vulnerabilities in the PI Interface for IEEE C37.118 and reported them to ICS-CERT. OSIsoft has produced a software update that mitigates these vulnerabilities. OSIsoft has tested the software update to validate that it resolves the vulnerabilities. Exploitation of these vulnerabilities could allow an attacker to shut down the PI Interface for IEEE C37.118 instance and cause a data gap for PI points belonging to it. These vulnerabilities could be exploited remotely. AFFECTED PRODUCTS The following OSIsoft PI Interfaces are affected: All versions of the PI Interface for IEEE C37.118 prior to Version 1.0.6.158. IMPACT Successful exploitation of these vulnerabilities could shut down the PI Interface for the IEEE C37.118 instance and cause a data gap for PI points belonging to it. Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. BACKGROUND OSIsoft is a US-based company that maintains its headquarters in San Leandro, California, with operations globally. The affected product, PI Interface for IEEE C37.118, collects information from synchro-phasor measurement units (PMU devices). According to OSIsoft, PI Interface for IEEE C37.118 is deployed across electric utilities and associated research entities. OSIsoft estimates that these products are used primarily in the United States and Europe with a small percentage in Asia. VULNERABILITY CHARACTERIZATION VULNERABILITY OVERVIEW IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER[a] The PI Interface for IEEE C37.118 could read from an invalid memory address when processing C37.118 configuration packets. This could allow the attacker to shut down the PI Interface for IEEE C37.118 instance and cause a data gap for PI points belonging to it. CVE-2013-2801[b] has been assigned to this vulnerability. A CVSS v2 base score of 7.8 has been assigned; the CVSS vector string is (AV:N/AC:L/Au:N/C:N/I:N/A:C).[c] IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFERa The PI Interface for IEEE C37.118 could corrupt or exhaust memory when processing C37.118 configuration packets. This could allow the attacker to shut down the PI Interface for IEEE C37.118 instance and cause a data gap for PI points belonging to it. CVE-2013-2800d has been assigned to this vulnerability. A CVSS v2 base score of 7.8 has been assigned; the CVSS vector string is AV:N/AC:L/Au:N/C:N/I:N/A:C.c VULNERABILITY DETAILS EXPLOITABILITY These vulnerabilities could be exploited remotely. EXISTENCE OF EXPLOIT No known public exploits specifically target these vulnerabilities. DIFFICULTY An attacker with a low skill would be able to exploit these vulnerabilities. MITIGATION OSIsoft has produced a software update that resolves these vulnerabilities. OSIsoft encourages customers using the affected product to upgrade to Version 1.0.6.158 or later. The software update can be found at the OSIsoft technical support Web site: http://techsupport.osisoft.com/ 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. Critical devices should not directly face 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 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. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.[e] ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to taking 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,[f] that is available for download from the ICS-CERT Web page (http://ics-cert.us-cert.gov/). 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-119: Improper Restriction of Operations within the Bounds of a Memory Buffer, http://cwe.mitre.org/data/definitions/119.html, Web site last accessed August 13, 2013. b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-2801, 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:C Web site last accessed August 13, 2013. d. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-2800, NIST uses this advisory to create the CVE Web site report. This Web site will be active sometime after publication of this advisory. e. CSSP Recommended Practices, http://ics-cert.us-cert.gov/content/recommended-practices, Web site last accessed August 13, 2013. f. Targeted Cyber Intrusion Detection and Mitigation Strategies, http://ics-cert.us-cert.gov/tips/ICS-TIP-12-146-01B, Web site last accessed August 13, 2013. 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 answering a short series of questions about this product at the following URL: https://forms.us-cert.gov/ncsd-feedback/. Legal For Legal Information pertaining to this document, please consult http://ics-cert.us-cert.gov/Legal-Disclaimer - --------------------------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 iQIVAwUBUg1vBBLndAQH1ShLAQL7vA//YTzooiUv8o0wGMRrZN5SObzKjlbXHekl M/3xhbnaOYb58/UEgj7dUMb1rT+W21yKUH5Ame5Bn0OKIfV4uyXldsA3cd2Sa65e cuReOBICk15Totq1E2yDipJfWo7XuunsEcBHsjbUQK3vKAIy5SKChh8E4nQrK/8z kvgZOH5yjX/Mb8ViBbbNAhYz/CV8qntKKMbFsBaiT9IcBfh7eS45XQhch1YTxCvO lQJ2HbKKg+wc9PXtUjLxxo4m/lEIwtQd5cFAsxyEMvqnCYPk7ARc/WeTODk/yJsM 7Ca57Y5CBEqn/QalBks/N4Tr/cku538AcCgisBINk+etg8hBG9xhNOhkM0htcTnD V0Zums8/nR8BtGS3MqrUidGWbXhx6W14YgtuvT6Hxx+VDcaV2MOW23PvzDXoib4R RZvMgj92qhkUNYFzLlFwlE5gve7X9ovU9xkkAaj2ZnajDh3vo/uMvnkZzDfCWKkf t6OhrSjp5P4uYio/HyfPVRptXr1D5xSXYZfEBBPCR3cyTDxMuo9KJ0yWWHcOjvIc Vhsnu2kv9P+bYSf2dWSoV9C7picbqiEUN1D9rnn1I38TjAoD4YvoO1alFyZja4/R A9RSrJTONZ4iitUuqCjWayQPvZzijqeKU2y/Va4Tq++tFINS7fD5/ViQrDszmSp7 tyeFVuuD5rg= =wCg3 -----END PGP SIGNATURE-----