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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0140 Advisory (ICSA-18-011-03) PHOENIX CONTACT FL SWITCH 12 January 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: PHOENIX CONTACT FL SWITCH Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Administrator Compromise -- Remote/Unauthenticated Access Privileged Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-16743 CVE-2017-16741 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-18-011-03 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-18-011-03) PHOENIX CONTACT FL SWITCH Original release date: January 11, 2018 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/. CVSS v3 9.8 ATTENTION: Remotely exploitable/low skill level to exploit. Vendor: PHOENIX CONTACT Equipment: FL SWITCH Vulnerabilities: Improper Authorization, Information Exposure AFFECTED PRODUCTS All FL SWITCH 3xxx, 4xxx, and 48xxx Series products running firmware Version 1.0 to 1.32 are affected. IMPACT Successful exploitation of these vulnerabilities may allow an unauthenticated remote attacker to gain administrative privileges and expose information to unauthenticated users. MITIGATION PHOENIX CONTACT recommends that affected users upgrade to firmware Version 1.33 or higher. The updated firmware may be downloaded from the following locations: o FL SWITCH 3005: http://www.phoenixcontact.net/qr/2891030/firmware_update o FL SWITCH 3005T: http://www.phoenixcontact.net/qr/2891032/firmware_update o FL SWITCH 3004T-FX http://www.phoenixcontact.net/qr/2891033/firmware_update o FL SWITCH 3004T-FX ST http://www.phoenixcontact.net/qr/2891034/firmware_update o FL SWITCH 3008 http://www.phoenixcontact.net/qr/2891031/firmware_update o FL SWITCH 3008T http://www.phoenixcontact.net/qr/2891035/firmware_update o FL SWITCH 3006T-2FX http://www.phoenixcontact.net/qr/2891036/firmware_update o FL SWITCH 3006T-2FX ST http://www.phoenixcontact.net/qr/2891037/firmware_update o FL SWITCH 3012E-2SFX http://www.phoenixcontact.net/qr/2891067/firmware_update o FL SWITCH 3016E http://www.phoenixcontact.net/qr/2891066/firmware_update o FL SWITCH 3016 http://www.phoenixcontact.net/qr/2891058/firmware_update o FL SWITCH 3016T http://www.phoenixcontact.net/qr/2891059/firmware_update o FL SWITCH 3006T-2FX SM http://www.phoenixcontact.net/qr/2891060/firmware_update o FL SWITCH 4008T-2SFP http://www.phoenixcontact.net/qr/2891062/firmware_update o FL SWITCH 4008T-2GT-4FX SM http://www.phoenixcontact.net/qr/2891061/firmware_update o FL SWITCH 4008T-2GT-3FX SM http://www.phoenixcontact.net/qr/2891160/firmware_update o FL SWITCH 4808E-16FX LC-4GC http://www.phoenixcontact.net/qr/2891073/firmware_update o FL SWITCH 4808E-16FX SM-4GC http://www.phoenixcontact.net/qr/2891080/firmware_update o FL SWITCH 4808E-16FX SM ST-4GC http://www.phoenixcontact.net/qr/2891086/firmware_update o FL SWITCH 4808E-16FX ST-4GC http://www.phoenixcontact.net/qr/2891085/firmware_update o FL SWITCH 4808E-16FX-4GC http://www.phoenixcontact.net/qr/2891079/firmware_update o FL SWITCH 4808E-16FX SM LC-4GC http://www.phoenixcontact.net/qr/2891074/firmware_update o FL SWITCH 4012T 2GT 2FX http://www.phoenixcontact.net/qr/2891063/firmware_update o FL SWITCH 4012T-2GT-2FX ST http://www.phoenixcontact.net/qr/2891161/firmware_update o FL SWITCH 4824E-4GC http://www.phoenixcontact.net/qr/2891072/firmware_update o FL SWITCH 4800E-24FX-4GC http://www.phoenixcontact.net/qr/2891102/firmware_update o FL SWITCH 4800E-24FX SM-4GC http://www.phoenixcontact.net/qr/2891104/firmware_update o FL SWITCH 4800E-24FX SM-4GC http://www.phoenixcontact.net/qr/2891120/firmware_update o FL SWITCH 3012E-2FX SM http://www.phoenixcontact.net/qr/2891119/firmware_update o FL SWITCH 4000T-8POE-2SFP-R http://www.phoenixcontact.net/qr/2891162/firmware_update NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should: o Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet. o Locate control system networks and remote devices behind firewalls, and isolate them from the business network. o 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 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. 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 IMPROPER AUTHORIZATION CWE-285 A remote unauthenticated attacker may be able to craft special HTTP requests allowing an attacker to bypass web-service authentication allowing the attacker to obtain administrative privileges on the device. CVE-2017-16743 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/ I:H/A:H). INFORMATION EXPOSURE CWE-200 A remote unauthenticated attacker may be able to use Monitor Mode on the device to read diagnostic information. CVE-2017-16741 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/ I:N/A:N). RESEARCHER Ilya Karpov and Evgeniy Druzhinin of Positive Technologies discovered these vulnerabilities. PHOENIX CONTACT reported to CERT@VDE that their products are affected. CERT@VDE coordinated these vulnerabilities with ICS-CERT. BACKGROUND Critical Infrastructure Sectors: Communications, Critical Manufacturing, Information Technology Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Contact Information For any questions related to this report, please contact the NCCIC at: Email: NCCICCUSTOMERSERVICE@hq.dhs.gov Toll Free: 1-888-282-0870 For industrial control systems cybersecurity information: http:// ics-cert.us-cert.gov or incident reporting: https://ics-cert.us-cert.gov/Report-Incident? The NCCIC 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: https://www.auscert.org.au/bulletins/ =========================================================================== 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 iQIVAwUBWlgcz4x+lLeg9Ub1AQh6Rg//UYcITP+qJS4vFfduQlGxB09+ILNrE7Ry zCjZHmVVnhcEKGEY6Djg5yxoB/wgS2jit/vkFTLY0jvZH8CqvZb+M0JODCo/52et 1N2qZ7lxyD8VpVnZASzzLqDs53PyMGWPhJ6mclXRMOII3rVLSnZekIvw4j95R/b8 dNX9Klf+bsWfZhWXzDOTKkjHIjzztYLHILsvVjD6zTwDL8+JX1fN4ayAEf+5yBSU j6U2OrZ0P2ga0/lx9XlimuE241Xz5qbvizPrHqqzkYQUZqxRVdyBwYtY/xsUvaX9 SbHVBzgQJ6Gjf293IUHk58vEXdLQK0+hZm0VyhoQYLVgA/TL8SSlik4zK6DYp0h+ 8Gn1BepxIQTiTpzaRoP7MD9D2vL0UIH3Hpa1EhVQC42M5mfRadYvH9R35utGbPKN GDrE+MTncBGZcJJ+z3M2eCs6uNH9kpqDfYvh9Tlm7CTbRFSCxlssf+8mADzDawrt 0Hy3UJNjkXO4Hl74XvQ4MRfxzn+0TPquBvwKvwhER4d+2niL4bKdfRs30NF5lAVW fONj4ocnp4dOMTNxM5X7GbndgZHm+uPvL3r2kdQ+NLqNN15nSPrBI6PUyl3eKvtD +20yPRrRqRgDM+EGrJWJJLWHUQgbcMAXTuC5GlWUjxZeIAEpi0zrx0xVVHWue+hP UgskJeCc00Y= =2UKQ -----END PGP SIGNATURE-----