Siemens PROFINET Devices (Update H)

# ICS Advisory (ICSA-19-283-02) ## Siemens PROFINET Devices (Update H) Original release date: September 08, 2020 [Print Document](javascript:window.print\(\);) [Tweet](https://twitter.com/share?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-19-283-02) [Like Me](https://www.facebook.com/sharer.php?u=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-19-283-02) [Share](http://www.addthis.com/bookmark.php?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-19-283-02) ### Legal Notice All information products included in [https://us-cert.gov/ics](/ics) 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 [https://www.us- cert.gov/tlp/](/tlp/). * * * ## 1\. EXECUTIVE SUMMARY * **CVSS v3 7.5** * **ATTENTION:** Exploitable remotely/low skill level to exploit * **Vendor:** Siemens * **Equipment:** PROFINET Devices * **Vulnerability:** Uncontrolled Resource Consumption ## 2\. UPDATE INFORMATION This updated advisory is a follow-up to the advisory update titled ICSA-19-283-02 Siemens PROFINET Devices (Update G) that was published August 11, 2020, to the ICS webpage on us-cert.gov. ## 3\. RISK EVALUATION Successful exploitation of this vulnerability could cause a denial-of-service condition. ## 4\. TECHNICAL DETAILS ### 4.1 AFFECTED PRODUCTS Siemens reports the vulnerability affects the following PROFINET devices: Siemens reports the vulnerability affects the following PROFINET devices: **\--------- Begin Update H Part 1 of 2 ---------** * Development/Evaluation Kits for PROFINET IO: * DK Standard Ethernet Controller: All versions * EK-ERTEC 200: All version * EK-ERTEC 200P: All versions prior to 4.6 Patch 01 * SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants): All versions prior to 8.2.2 **\--------- End Update H Part 1 of 2 ---------** * SIMATIC CFU PA: All versions prior to 1.2.0 * SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants): All versions prior to 2.0 * SIMATIC ET 200AL: All versions * SIMATIC ET 200M (incl. SIPLUS variants): All versions * SIMATIC ET 200MP IM 155-5 PN BA (incl. SIPLUS variants): All versions prior to 4.2.3 * SIMATIC ET 200MP IM 155-5 PN HF (incl. SIPLUS variants): All versions prior to 4.4.0 * SIMATIC ET 200MP IM 155-5 PN ST (incl. SIPLUS variants): All versions * SIMATIC ET 200S (incl. SIPLUS variants): All versions * SIMATIC ET 200SP IM 155-6 PN BA (incl. SIPLUS variants): All versions * SIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants): All versions * SIMATIC ET 200SP IM 155-6 PN HF (incl. SIPLUS variants): All versions prior to 4.2.2 * SIMATIC ET 200SP IM 155-6 PN HS (incl. SIPLUS variants): All versions * SIMATIC ET 200SP IM 155-6 PN ST (incl. SIPLUS variants): All versions * SIMATIC ET 200SP IM 155-6 PN/2 HF (incl. SIPLUS variants): All versions prior to 4.2.2 * SIMATIC ET 200SP IM 155-6 PN/3 HF (incl. SIPLUS variants): All versions prior to 4.2.1 * SIMATIC ET 200pro: All versions * SIMATIC HMI Comfort Outdoor Panels 7" & 15" (incl. SIPLUS variants): All versions * SIMATIC HMI Comfort Panels 4" - 22" (incl. SIPLUS variants): All versions * SIMATIC HMI KTP Mobile Panels: All versions * SIMATIC PROFINET Driver: All versions prior to 2.1 * SIMATIC S7-1200 CPU family (incl. SIPLUS variants): All versions prior to 4.4.0 * SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants): All versions prior to 2.0 * SIMATIC S7-1500 CPU Software Controller: All versions prior to 2.0 * SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants): All versions prior to 3.X.17 * SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants): All versions prior to 6.0.9 * SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants): All versions * SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants): All versions * SIMATIC TDC CP51M1: All versions prior to 1.1.8 * SIMATIC TDC CPU555: All versions prior to 1.1.1 * SIMATIC WinAC RTX (F) 2010: All versions prior to SP3 * SINAMICS DCM: All versions prior to 1.5 HF1 * SINAMICS DCP: All versions prior to 1.3 * SINAMICS G110M v4.7 PN Control Unit: All versions prior to 4.7 SP10 HF5 * SINAMICS G120 v4.7 PN Control Unit (incl. SIPLUS variants): All versions prior to 4.7 SP10 HF5 * SINAMICS G130 v4.7 Control Unit: All versions prior to 4.8 * SINAMICS G150 Control Unit: All versions prior to 4.8 * SINAMICS GH150 v4.7 Control Unit: All versions * SINAMICS GL150 v4.7 Control Unit: All versions * SINAMICS GM150 v4.7 Control Unit: All versions * SINAMICS S110 Control Unit: All versions * SINAMICS S120 v4.7 Control Unit (incl. SIPLUS variants): All versions * SINAMICS S150 Control Unit: All versions prior to 4.8 * SINAMICS SL150 v4.7 Control Unit: All versions prior to 4.7 HF33 * SINAMICS SM120 v4.7 Control Unit: All versions * SINUMERIK 828D: All versions prior to 4.8 SP5 * SINUMERIK 840D sl: All versions * SIMATIC ET 200ecoPN ((except 6ES7141-6BG00- 0BB0, 6ES7141-6BH00-0BB0, 6ES7142-6BG00- 0BB0, 6ES7142-6BR00-0BB0, 6ES7143-6BH00- 0BB0, 6ES7146-6FF00-0AB0 and 6ES7148- 6JD00-0AB0): All versions * SIMATIC PN/PN Coupler (incl. SIPLUS NET variants): All versions prior to v4.2.1 ### 4.2 VULNERABILITY OVERVIEW #### 4.2.1 [UNCONTROLLED RESOURCE CONSUMPTION ('RESOURCE EXHAUSTION') CWE-400](https://cwe.mitre.org/data/definitions/400.html) An unauthenticated attacker sending a large amount of specially crafted UDP packets may trigger a denial-of-service condition. [CVE-2019-10936](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-10936) has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is ([AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)). ### 4.3 BACKGROUND * **CRITICAL INFRASTRUCTURE SECTORS:** Critical Manufacturing * **COUNTRIES/AREAS DEPLOYED:** Worldwide * **COMPANY HEADQUARTERS LOCATION:** Germany ### 4.4 RESEARCHER Siemens reported this vulnerability to CISA. ## 5\. MITIGATIONS Siemens recommends users update the following PROFINET devices: **\--------- Begin Update H Part 2 of 2 ---------** * Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200P: [Update to v4.6 Patch 01](https://support.industry.siemens.com/cs/ww/en/view/109781345) * SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants): [Update to v8.2.2](https://support.industry.siemens.com/cs/us/en/view/109476571) **\--------- Begin Update H Part 2 of 2 ---------** * SIMATIC CFU PA: [Update to v1.2.0](https://support.industry.siemens.com/cs/ww/en/view/109754628) * SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants): [Update to latest version](https://support.industry.siemens.com/cs/ww/en/view/109759122) * SIMATIC ET 200MP IM 155-5 PN BA (incl. SIPLUS variants): [Update to v4.3.0](https://support.industry.siemens.com/cs/ww/en/view/109754281) * SIMATIC ET 200MP IM 155-5 PN HF (incl. SIPLUS variants): Update to v4.4.0 * SIMATIC ET 200SP IM 155-6 PN HF (incl. SIPLUS variants): [Update to v4.2.2](https://support.industry.siemens.com/cs/ww/en/view/85624387) * SIMATIC ET 200SP IM 155-6 PN/2 HF (incl. SIPLUS variants): [Update to v4.2.2](https://support.industry.siemens.com/cs/ww/en/view/85624387) * SIMATIC ET 200SP IM 155-6 PN/3 HF (incl. SIPLUS variants): [Update to v4.2.1](https://support.industry.siemens.com/cs/ww/en/view/109769419) * SIMATIC PN/PN Coupler (incl. SIPLUS NET variants): [Update to v4.2.1](https://support.industry.siemens.com/cs/ww/en/view/109760973) * SIMATIC PROFINET Driver: [Update to v2.1](https://support.industry.siemens.com/cs/ww/en/view/109768047) * SIMATIC S7-1200 CPU family (incl. SIPLUS variants): [Update to v4.4.0](https://support.industry.siemens.com/cs/ww/en/view/109763919) * SIMATIC S7-1500 Software Controller: [Update to the latest version](https://support.industry.siemens.com/cs/ww/en/view/109764666) * SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants): [Update to v3.X.17](https://support.industry.siemens.com/cs/ww/en/ps/13752/dl) * SIMATIC S7-400H v6 CPU Family (incl. SIPLUS variants): [Update to v6.0.9](https://support.industry.siemens.com/cs/ww/en/view/109474550) * SIMATIC TDC CP51M1: [Update to v1.1.8](https://support.industry.siemens.com/cs/ww/en/view/27049282) * SIMATIC TDC CPU555: [Update to v1.1.1](https://support.industry.siemens.com/cs/ww/en/view/109740119) * SINAMICS G120 v4.7 PN Control Unit (incl. SIPLUS variants): [Update to v4.7 SP10 HF5](https://support.industry.siemens.com/cs/ww/en/view/109756820) * SINAMICS G130 v4.7 Control Unit: [Update to v5.2 HF1](https://support.industry.siemens.com/cs/ww/en/view/109764679/) * SINAMICS G150 Control Unit: [Update to v5.2 HF1](https://support.industry.siemens.com/cs/ww/en/view/109764679/) * SIMATIC WinAC RTX (F) 2010: [Update to SP3](https://support.industry.siemens.com/cs/ww/en/view/109762626) and apply BIOS and Microsoft Windows updates * SINAMICS DCM: [Update to v1.5 HF1](https://support.industry.siemens.com/cs/ww/en/view/44029688) * SINAMICS G110M v4.7 PN Control Unit: [Update to v4.7 SP10 HF5](https://support.industry.siemens.com/cs/ww/en/view/109756820) * SINAMICS DCP: [Update to v1.3](https://support.industry.siemens.com/cs/ww/en/view/109773826) * SINAMICS GH150 v4.7 Control Unit: Upgrade to v4.8 SP2 HF9: The update can be obtained from a Siemens representative or via Siemens customer service. * SINAMICS GL150 v4.7 Control Unit: Upgrade to v4.8 SP2 HF9: The update can be obtained from a Siemens representative or via Siemens customer service. * SINAMICS GM150 v4.7 Control Unit: Upgrade to v4.8 SP2 HF9: The update can be obtained from a Siemens representative or via Siemens customer service. * SINAMICS S120 v4.7 Control Unit (incl. SIPLUS variants): [Update to v5.2 HF4](https://support.industry.siemens.com/cs/ww/en/view/109762626) * SINAMICS S150 Control Unit: [Update to v5.2 HF1](https://support.industry.siemens.com/cs/ww/en/view/109764679/) * SINAMICS SL150 v4.7 Control Unit: Update to v4.7 HF33 The update can be obtained from a Siemens representative or via Siemens customer service. * SINUMERIK 828D: Update to v4.8 SP5 The update can be obtained from a Siemens representative or via Siemens customer service. Siemens has identified the following specific workarounds and mitigations users can apply to reduce the risk: * Restrict network access to affected devices. As a general security measure, Siemens strongly recommends users protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends users configure the environment according to the [Siemens operational guidelines for industrial security](https://www.siemens.com/cert/operational-guidelines-industrial- security), and follow the recommendations in the product manuals. Additional information on industrial security by Siemens can be found at: <https://www.siemens.com/industrialsecurity> For more information, please see Siemens Security Advisory [SSA-473245](http://www.siemens.com/cert/advisories) CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should: * Minimize network exposure for all control system devices and/or systems, and ensure that they are [not accessible from the Internet](https://www.us-cert.gov/ics/alerts/ICS-ALERT-10-301-01). * 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. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for [control systems security recommended practices](https://www.us-cert.gov/ics/recommended-practices) on the ICS webpage on [us-cert.gov](https://www.us-cert.gov/ics). Several recommended practices are available for reading and download, including [Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies](https://www.us- cert.gov/sites/default/files/recommended_practices/NCCIC_ICS- CERT_Defense_in_Depth_2016_S508C.pdf). Additional mitigation guidance and recommended practices are publicly available on the [ICS webpage on us-cert.gov](https://www.us-cert.gov/ics) in the Technical Information Paper, [ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies](https://www.us-cert.gov/ics/tips/ICS- TIP-12-146-01B). Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents. No known public exploits specifically target this vulnerability.