Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1011 PHOENIX CONTACT RAD-80211-XD 27 March 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Phoenix Contact devices Publisher: US-CERT Operating System: Network Appliance Impact/Access: Root Compromise -- Remote/Unauthenticated Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-9743 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-19-085-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-19-085-02) PHOENIX CONTACT RAD-80211-XD Original release date: March 26, 2019 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/ . 1. EXECUTIVE SUMMARY o CVSS v3 9.9 o ATTENTION: Exploitable remotely/low skill level to exploit o Vendor: Phoenix Contact o Equipment: RAD-80211-XD o Vulnerability: Command Injection 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to execute system level commands with administrative privileges. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS According to Phoenix Contact, the following products are affected: o RAD-80211-XD (2885728), and o RAD-80211-XD/HP-BUS (2900047) 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN A COMMAND ('COMMAND INJECTION') CWE-77 A WebHMI utility may be exploited by any logged-in user, allowing the execution of arbitrary OS commands on the server. This provides the opportunity for a command injection attack. CVE-2019-9743 has been assigned to this vulnerability. A CVSS v3 base score of 9.9 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:C/ C:H/I:H/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Communications, Critical Manufacturing, Information Technology o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Germany 3.4 RESEARCHER Maxim Rupp (RuppIT) working with Phoenix Contact and CERT@VDE reported this vulnerability to NCCIC. 4. MITIGATIONS Phoenix Contact recommends the following: o Users using Phoenix Contact 80211-XD radio modules are recommended to operate the devices in closed networks or protected with a suitable firewall. o The affected products have been removed from active maintenance due to obsolescence. For this reason, it is recommended that concerned users upgrade to the active FL WLAN product line. o For detailed information on recommendations for measures to protect network-capable devices, please refer to the application note: https:// www.phoenixcontact.com/assets/downloads_ed/local_pc/web_dwl_technical_info/ ah_en_industrial_security_107913_en_01.pdf Please see VDE-2019-007 at the following location for more details: https://cert.vde.com/en-us/advisories/vde-2019-007 NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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. NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. NCCIC 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 on the ICS-CERT website in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies . Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation against other incidents. No known public exploits specifically target this vulnerability. - --------------------------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 iQIVAwUBXJr5PWaOgq3Tt24GAQi/ihAAgfaYb/L1fwismbbz4nJZb5yybN/2Fs3I 7aHBDa7pmByw8CQJ6tB3rIwH9Eva5CTuGgKVjHwQhlRcRE9FPa4CUc2EbbB/iQP0 FbNy9rUXE+UhpbsVYQcxvrgONopUd1lbg3PLu/NhbO79nI7EV5YE9X5w6hIzj1UX QBcEfynuepW4UFyKy9UB329maFX0+yFsinkc8Ju8NZIKOVjJCjaCK+9wd48IPiEV Q9e8kZopV4CmXKSB4SiU/O5U0Oy0r+HrsK3FqZlzn5ohtH1T0y9HULMRs60KJ0jS IwBKDWXUvaCpkGLM/gch86N9uwDN62njlAWh7qF08G0w4HTkBSE+B0DSOL7ry35k 8gcO1UmMhjRk0Vg5qLvLPVxVKPAWO29Ne5tTl7yQY/Z57Sff56lSsANdZ9oGkLbm Uots/lINOuGyJK6X1DlqA29KhwlXnhvrd8IygwG7ipcKh9KoBetMHvnw6ffMnH4v qgULyc0EfWOyk081L+SJBE8wPd5lOEO7CW9krAatGdzrcm9D2dLDv6EE2axw7YSf 3OGHhpKec6MgFvon9NxFB8NlagKSLBh/Q7cftrqEG1X0BNVeB+dN323wDivekWcS 7xuNiDWEmyg4KOO21KKfUBAhQs7rygRFhS8i1y1QvCJiq2RqyufLwhwj5oOWYG4F fRnDIFcM7GE= =2spE -----END PGP SIGNATURE-----