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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1153 Rockwell Automation Stratix 5400/5410 and ArmorStratix 5700 5 April 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Rockwell Automation Stratix Rockwell Automation ArmorStratix Publisher: ICS CERT Operating System: Network Appliance Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-15377 CVE-2018-15373 CVE-2018-0473 CVE-2018-0472 CVE-2018-0470 CVE-2018-0467 CVE-2018-0466 Reference: ESB-2018.2904 ESB-2018.2903 ESB-2018.2902 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-19-094-02 https://ics-cert.us-cert.gov/advisories/ICSA-19-094-04 https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03 Comment: This bulletin contains three (3) advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-19-094-02) Rockwell Automation Stratix 5400/5410 and ArmorStratix 5700 Original release date: April 04, 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 ATTENTION: Exploitable remotely/low skill level to exploit o Vendor: Rockwell Automation o Equipment: Stratix 5400/5410/5700, ArmorStratix 5700 o Vulnerability: Uncontrolled Resource Consumption 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to cause a memory leak on an affected device, which may cause the device to reload. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following Stratix Industrial Switches are affected by this vulnerability in the Cisco Open Plug-n-Play agent: o Allen-Bradley Stratix 5400: All versions prior to 15.2(6)E2a o Allen-Bradley Stratix 5410: All versions prior to 15.2(6)E2a o Allen-Bradley Stratix 5700: All versions prior to 15.2(6)E2a o Allen-Bradley ArmorStratix 5700: All versions prior to 15.2(6)E2a 3.2 VULNERABILITY OVERVIEW 3.2.1 UNCONTROLLED RESOURCE CONSUMPTION CWE-400 An unauthenticated remote attacker could send invalid data to the Cisco Network Plug and Play agent (also referred to as the Cisco Open Plug-n-Play agent) causing a memory leak on the device, which could cause the device to reload. CVE-2018-15377 has been assigned to this vulnerability. A CVSS v3 base score of 6.8 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:C/ C:N/I:N/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Energy, Water and Wastewater Systems o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: United States 3.4 RESEARCHER Rockwell Automation reported this vulnerability to NCCIC. 4. MITIGATIONS Rockwell automation recommends users upgrade to FRN 15.2(6)E2a or later, which can be downloaded from the following page: http://compatibility.rockwellautomation.com/Pages/MultiProductDownload.aspx famID=15 Rockwell Automation recommends users apply the following general guidelines: o Utilize proper network infrastructure controls, such as firewalls, to help ensure that requests from unauthorized sources are blocked and the controls are isolated from the business network. o Block all traffic to EtherNet/IP, or other CIP protocol-based devices, from outside the manufacturing zone by blocking or restricting access to TCP and UDP Port 2222 and Port 44818 using proper network infrastructure controls, such as firewalls, UTM devices, or other security appliances. For more information on TCP/UDP ports used by Rockwell Automation Products, see Knowledgebase Article ID 898270. o Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet 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. For additional information, see Rockwell Automation's security advisory, which can be found at the following link: https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1082686 (Login required) Cisco's product security disclosure is available at the following link: https:/ /tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20180926-pnp-memleak 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. - -------------------------------------------------------------------------------- Advisory (ICSA-19-094-03) Rockwell Automation Stratix 5400/5410/5700/8000/8300 and ArmorStratix 5700 Original release date: April 04, 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 8.6 o ATTENTION: Exploitable remotely/low skill level to exploit o Vendor: Rockwell Automation o Equipment: Stratix 5400/5410/5700/8000/8300, ArmorStratix 5700 o Vulnerabilities: Resource Management Errors, Improper Input Validation 2. RISK EVALUATION Successful exploitation of these vulnerabilities could result in a denial-of-service condition or time synchronization issues across the network via reloading the device, a buffer overflow, or memory exhaustion. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS o Allen-Bradley Stratix 5400: All versions 15.2(6)E0a and prior o Allen-Bradley Stratix 5410: All versions 15.2(6)E0a and prior o Allen-Bradley Stratix 5700: All versions 15.2(6)E0a and prior o Allen-Bradley ArmorStratix 5700: All versions 15.2(6)E0a and prior o Allen-Bradley Stratix 8000: All versions 15.2(6)E0a and prior o Allen-Bradley Stratix 8300: All versions prior to 15.2(4)EA7 3.2 VULNERABILITY OVERVIEW 3.2.1 RESOURCE MANAGEMENT ERRORS CWE-399 Sending a specially crafted open shortest path first version 3 (OSPFv3) packet could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial-of-service condition. CVE-2018-0466 has been assigned to this vulnerability. A CVSS v3 base score of 7.4 has been calculated; the CVSS vector string is ( AV:A/AC:L/PR:N/UI:N/S:C/ C:N/I:N/A:H ). 3.2.2 RESOURCE MANAGEMENT ERRORS CWE-399 Sending a malformed HTTP packet in the web framework of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a buffer overflow condition on an affected device, resulting in a denial-of-service condition. CVE-2018-0470 has been assigned to this vulnerability. A CVSS v3 base score of 8.6 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:C/ C:N/I:N/A:H ). 3.2.3 RESOURCE MANAGEMENT ERRORS CWE-399 Sending a custom precision time protocol (PTP) packet to or through an affected device could allow an unauthenticated remote attacker to cause a denial-of-service condition of PTP, which may result in time synchronization issues across the network. CVE-2018-0473 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/ C:N/I:N/A:H ). 3.2.4 IMPROPER INPUT VALIDATION CWE-20 Sending a malicious IPv6 packet to or through the affected device could allow an unauthenticated, remote attacker to cause the device to reload, resulting in a denial-of-service condition. CVE-2018-0467 has been assigned to this vulnerability. A CVSS v3 base score of 8.6 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:C/ C:N/I:N/A:H ). 3.2.5 RESOURCE MANAGEMENT ERRORS CWE-399 Sending a high rate of Cisco discovery protocol packets to an affected device could allow an unauthenticated, adjacent attacker to exhaust memory on an affected device, resulting in a denial-of-service condition. CVE-2018-15373 has been assigned to this vulnerability. A CVSS v3 base score of 8.6 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:C/ C:N/I:N/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Energy, Water and Wastewater Systems o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: United States 3.4 RESEARCHER Rockwell Automation reported these vulnerabilities to NCCIC. 4. MITIGATIONS Rockwell automation recommends users upgrade to the following versions or later: FRN 15.2(6)E2a: o Allen-Bradley Stratix 5400 o Allen-Bradley Stratix 5410 o Allen-Bradley Stratix 5700 o Allen-Bradley ArmorStratix 5700 o Allen-Bradley Stratix 8000 FRN 15.2(4)EA7: o Allen-Bradley Stratix 8300 Updates can be found and downloaded from the following page: http://compatibility.rockwellautomation.com/Pages/MultiProductDownload.aspx famID=15 Rockwell Automation recommends users apply the following general guidelines: o Utilize proper network infrastructure controls, such as firewalls, to help ensure that requests from unauthorized sources are blocked and the controls are isolated from the business network. o Consult the product documentation for specific features, such as access control lists and deep pack inspection, which may be used to block unauthorized changes, etc. o Block all traffic to EtherNet/IP, or other CIP protocol-based devices, from outside the manufacturing zone by blocking or restricting access to TCP and UDP Port 2222 and Port 44818 using proper network infrastructure controls, such as firewalls, UTM devices, or other security appliances. For more information on TCP/UDP ports used by Rockwell Automation Products, see Knowledgebase Article ID 898270 (Login required). 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. For additional information, see Rockwell Automation's security advisory, which can be found at the following link: https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1082687 (Login required) 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 these vulnerabilities. - -------------------------------------------------------------------------------- Advisory (ICSA-19-094-04) Rockwell Automation Stratix 5950 Original release date: April 04, 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 8.6 o ATTENTION: Exploitable remotely/low skill level to exploit o Vendor: Rockwell Automation o Equipment: Stratix 5950 o Vulnerability: Improper Input Validation 2. RISK EVALUATION Successful exploitation of this vulnerability could allow a remote attacker to cause an affected device to reload. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following Allen-Bradley Stratix 5950 security appliance products are affected by a vulnerability in the Cisco IPsec driver code: o 1783-SAD4T0SBK9 o 1783-SAD4T0SPK9 o 1783-SAD2T2SBK9 o 1783-SAD2T2SPK9 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER INPUT VALIDATION CWE-20 Sending malformed IPsec packets to an affected device could allow an unauthenticated remote attacker to cause the device to reload. IPsec is disabled by default in the Allen-Bradley Stratix 5950 devices. CVE-2018-0472 has been assigned to this vulnerability. A CVSS v3 base score of 8.6 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:C/C:N/ I:N/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Energy, Water and Wastewater Systems o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: United States 3.4 RESEARCHER Rockwell Automation reported this vulnerability to NCCIC. 4. MITIGATIONS IPsec is disabled by default in the Allen-Bradley Stratix 5950 devices. Rockwell Automation recommends that users not use any IPsec virtual private network (VPN) connections, including the following: o LAN-to-LAN IPsec VPN o Remote-access VPN using the IPsec VPN client o Layer 2 tunneling protocol (L2TP)-over-IPsec VPN connections Rockwell Automation also recommends users apply the following general guidelines: o Utilize proper network infrastructure controls, such as firewalls, to help ensure that requests from unauthorized sources are blocked and the controls are isolated from the business network. o Consult the product documentation for specific features, such as access control lists and deep pack inspection, which may be used to block unauthorized changes, etc. o Block all traffic to EtherNet/IP, or other CIP protocol-based devices, from outside the manufacturing zone by blocking or restricting access to TCP and UDP Port 2222 and Port 44818 using proper network infrastructure controls, such as firewalls, UTM devices, or other security appliances. For more information on TCP/UDP ports used by Rockwell Automation Products, see Knowledgebase Article ID 898270. o Minimize network exposure for all control system devices and/or systems and ensure that they are not accessible from the Internet For additional information, see Rockwell Automation's security advisory, which can be found at the following link: https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1082688 (Login required) Cisco's security disclosure for this vulnerability is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20180926-ipsec 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. 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