25 January 2012
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0085 Koyo ECOM100 Ethernet Module : Multiple Vulnerabilities. 25 January 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Koyo ECOM100 Ethernet Module Publisher: Industrial Control Systems Cyber Emergency Response Team Operating System: Network Appliance Impact/Access: Denial of Service -- Remote/Unauthenticated Cross-site Scripting -- Remote with User Interaction Unauthorised Access -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Mitigation Original Bulletin: http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-12-020-05.pdf - --------------------------BEGIN INCLUDED TEXT-------------------- ICS-CERT ALERT ICS-ALERT-12-020-05Ã¢Â€Â”KOYO ECOM100 MULTIPLE VULNERABILITIES January 20, 2012 ALERT SUMMARY ICS-CERT is aware of a public report of multiple vulnerabilities with proof-of-concept (PoC) exploit code affecting the Koyo ECOM100 Ethernet Module. This module is used to communicate between a PLC and the control system. This report is based on information presented by Reid Wightman during Digital Bonds SCADA Security Scientific Symposium (S4) on January19, 2012. Vulnerability details were released without coordination with either the vendor or ICS-CERT. ICS-CERT is attempting to notify the affected vendor of the report to ask the vendor to confirm the vulnerabilities and identify mitigations. ICS-CERT is issuing this alert to provide preliminary notice of the reported vulnerable products and to begin identifying baseline mitigations that can reduce the risk of cybersecurity attacks exploiting these vulnerabilities. The report included vulnerability details and PoC exploit code for the following vulnerabilities: Vulnerability Type Exploitability Impact Weak Authentication Remote Loss of Integrity Uses 8-byte passcode Remote Loss of Integrity Replay Attack Remote Loss of Integrity Web Server No Authentication Remote Open Authentication/Loss of Integrity Web Server Buffer Overflow Remote Denial of Service Web Server Cross-Site Scripting Remote Loss of Integrity Resource Exhaustion Remote Denial of Service and Web Server Crash Please report any issues affecting control systems in critical infrastructure environments to ICS-CERT. MITIGATION ICS-CERT is currently coordinating with Koyo and the security researcher to identify useful mitigations. ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should: Ã¢Â€Â¢ Minimize network exposure for all control system devices. Control system devices should not directly face the Internet. Ã¢Â€Â¢ Locate control system networks and devices behind firewalls, and isolate them from the business network. Ã¢Â€Â¢ If remote access is required, employ secure methods, such as Virtual Private Networks (VPNs), recognizing that VPN is only as secure as the connected devices. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to taking defensive measures. The Control Systems Security Program (CSSP) also provides a recommended practices section for control systems on the US-CERT website. Several recommended practices are available for reading or download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. Organizations that observe any suspected malicious activity should follow their established internal procedures and report their findings to ICS-CERT for tracking and correlation against other incidents. ICS -CERT CONTACT ICS-CERT Operations Center 1-877-776-7585 firstname.lastname@example.org For CSSP Information and Incident Reporting: www.ics-cert.org a. ICS-CERT ALERT, http://www.us-cert.gov/control_systems/pdf/ICS-Alert-10-301-01.pdf, website last accessed January 20, 2012 b. Control System Security Program (CSSP) Recommended Practices, http://www.us-cert.gov/control_systems/practices/Recommended_Practices.html, website last accessed January 20, 2012. DOCUMENT FAQ What is an ICS-CERT Alert? An ICS-CERT Alert is intended to provide timely notification to critical infrastructure owners and operators concerning threats or activity with the potential to impact critical infrastructure computing networks. When is vulnerability attribution provided to researchers? Attribution for vulnerability discovery is always provided to the vulnerability reporter unless the reporter notifies ICS-CERT that they wish to remain anonymous. ICS-CERT encourages researchers to coordinate vulnerability details before public release. The public release of vulnerability details prior to the development of proper mitigations may put industrial control systems and the public at avoidable risk. - --------------------------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 email@example.com 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: firstname.lastname@example.org 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 iQIVAwUBTx+Ny+4yVqjM2NGpAQLWrA//crRXwjaWy8SYapZdDwJO7EPeh02LC9A9 O/9/AyAYVVXyr46Q/dr4XdTRHN92f39lFCOzlpB5Lyic8tdD+/glFtPDrl5MAsGq Bx9ONgn8c9Crr+PjrBeSmkj9fUODkI59Cz/ZGAnm9Nt4dprj2e9cJRaF2QQxAdQS FZ6xFcgDYpWQQ5cS+E+tNruEBnKY9DD4tfEDn9KbM6LAdZ2Oz1KN+1qTNWD3R4Ht 1uf4jBnVAzSMh65EEdWF0PlCGjKE6eqQDxntxpDESojRSv5cJACLDUM+XviPnWcb KZ9ZKpgQYPreO3HABQT6CflLRAc95EhRfCOt6u+FEi6reK9yQZlcF93MjjBhdHMP zjNVbx6dDNttQRiJ0dErZPwJWY1ueNsA3eULEwIrMgKTxaj0Mynik1d7PnR/hkCA rKPL/3eP4+4n53nqd1WTmFJ68VarPQGyHaYIxks873UVPnaVoxeCBKwaFCFByD9b GhJ46BOwKtWrPSbnGX3x96/XStJPtccRXV/TddOxwoLY0kTK8AVKvINfBNoBVKQ+ gKNabujtbUBk0SO4u/iZqhIKHNpe4j5uvGLNNgVjnj5eY6jqtVeaaq0DONlOBmb5 KRchHzbs1Bgg0//B4TxMLYrpMrVtG8a36V5IxGGuslLJeZhfAmOKz0ogcj02v5rs 2wNwfvFEfzQ= =kbN5 -----END PGP SIGNATURE-----