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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.0510 Advisory (ICSA-17-054-02) Red Lion Controls Sixnet-Managed Industrial Switches, AutomationDirect STRIDE-Managed Ethernet Switches Vulnerability 24 February 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Sixnet-Managed Industrial Switches AutomationDirect STRIDE-Managed Ethernet Switches Publisher: Red Lion Controls Operating System: Network Appliance Impact/Access: Access Confidential Data -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-9335 Original Bulletin: http://ics-cert.us-cert.gov/advisories/ICSA-17-054-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-17-054-02) Red Lion Controls Sixnet-Managed Industrial Switches, AutomationDirect STRIDE-Managed Ethernet Switches Vulnerability Original release date: February 23, 2017 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/. CVSS v3 10 ATTENTION: Remotely exploitable. Low skill level is needed to exploit. Vendor: Red Lion Controls, AutomationDirect Equipment: Sixnet-Managed Industrial Switches and STRIDE-Managed Ethernet Switches Vulnerability: Use of Hard-coded Cryptographic Keys AFFECTED PRODUCTS The following Red Lion Controls Sixnet-Managed Industrial Switches are affected: Sixnet-Managed Industrial Switches running firmware Version 5.0.196 and prior. The following AutomationDirect STRIDE-Managed Ethernet Switch models, which are manufactured by Red Lion Controls, are affected: Stride-Managed Ethernet Switches running firmware Version 5.0.190 and prior. IMPACT Successful exploitation of the hard-coded cryptographic key vulnerabilities could result in loss of data confidentiality, integrity, and availability. MITIGATION Red Lion Controls has released SLX firmware Version 5.3.174 to address the hard-coded cryptographic keys issue. Red Lion Controls recommends updating to SLX firmware Version 5.3.174, found here: http://www.redlion.net/ethernet-switches-software-firmware (link is external) Automation Direct recommends updating to Stride Managed Ethernet firmware Version 5.3.174, found here: http://support.automationdirect.com/firmware/binaries.html (link is external) NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should: 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 reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. 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. Additional mitigation guidance and recommended practices are publicly available in the ICSCERT 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. 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. No known public exploits specifically target these vulnerabilities. VULNERABILITY OVERVIEW USE OF HARD-CODED CRYPTOGRAPHIC KEY CWE-321 A hard-coded cryptographic key vulnerability was identified. Vulnerable versions of Stride-Managed Ethernet switches and Sixnet-Managed Industrial switches use hard-coded HTTP SSL/SSH keys for secure communication. Because these keys cannot be regenerated by users, all products use the same key. The attacker could disrupt communication or compromise the system. CVE-2017-9335 has been assigned to this vulnerability. A CVSS v3 base score of 10 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). RESEARCHER Mark Cross of RIoT Solutions identified these vulnerabilities. BACKGROUND Critical Infrastructure Sector: Critical Manufacturing Countries/Areas Deployed: Deployed worldwide Company Headquarters Location: United States - --------------------------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 iQIVAwUBWK+fEox+lLeg9Ub1AQhSPQ//U1YJWcmiGNXiXwgBHkNXpwI6O61IZBIH AhsFEyhcA0Ga61ooOHbaivmTS1GpCbWYt6SMtcZ/2jg0VPPoZqHXYhjO97Ab3ZCh oXsZfqGtgM2gpmBe8HjSNZHdhxnJJsrjfKit7OXgobvdFcNAwCnSKipgTuZfhxF8 ZVMvQ9ADrm7P1e7FsLoZGzO+Z9SJXgjJ6aO2u3uORvlarMffFSDSq89837Drdy4+ O7ZIoMu2f5ZipQIVErRYp9Sl1kufjzI8xO/RO5p2Nd7DIT0m4v6M2w+dT081qjCS BQ3buJ6i11tpooEsFEzeEcUCWpuIx+E685qWr+/Te5UyY+SEPnMAUGVB8xHJlIln nTd72wVpkxABVilKPKK8MczgmWEDLhdPneg3aseIcA2c9LHyzTm4Am+qhpNC5TSf 1xqRg50QU4KMMv3JcgmM+EVeORqJqRpSTOz8SX+Y7LmoPGefV9hbiH8e8se5WGmJ jkt/0mqkMZNasjir81a8IAEbRFOAa2Na2BKItaXn5KCUl6S8kRk63H0o7FGANXDR WNvMlnM49y/KSe7Cc6Dm+J6OllpNQbR1qvIW53rPmF4FReSV3HVocpqGX/Wqpaws MSuBEBQINhr88Eotolvy6dkbLQY8Y439OVPEJVe+8vZXLmyETdHDlo0ZSWDfHwLN 7UwxsZ8+9Zw= =n4x0 -----END PGP SIGNATURE-----