Siemens SIPORT MP

# ICS Advisory (ICSA-20-042-08) ## Siemens SIPORT MP Original release date: February 11, 2020 [Print Document](javascript:window.print\(\);) [Tweet](https://twitter.com/share?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-20-042-08) [Like Me](https://www.facebook.com/sharer.php?u=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-20-042-08) [Share](http://www.addthis.com/bookmark.php?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-20-042-08) ### 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 6.5** * **ATTENTION:** Exploitable remotely/low skill level to exploit * **Vendor:** Siemens * **Equipment:** SIPORT MP * **Vulnerability:** Insufficient logging ## 2\. RISK EVALUATION Successful exploitation of this vulnerability could allow the attacker to create special accounts with administrative privileges. ## 3\. TECHNICAL DETAILS ### 3.1 AFFECTED PRODUCTS * SIPORT MP: All versions prior to 3.1.4 are affected ### 3.2 VULNERABILITY OVERVIEW #### 3.2.1 [INSUFFICIENT LOGGING CWE-778](https://cwe.mitre.org/data/definitions/778.html) Vulnerable versions of the device allow the creation of special accounts (service users) with administrative privileges that could enable a remote authenticated attacker to perform actions that are not visible to other users of the system, such as granting persons access to a secured area. [CVE-2019-19277](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-19277) has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is ([AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N)). ### 3.3 BACKGROUND * **CRITICAL INFRASTRUCTURE SECTORS:** Commercial Facilities, Government Facilities * **COUNTRIES/AREAS DEPLOYED:** Worldwide * **COMPANY HEADQUARTERS LOCATION:** Germany ### 3.4 RESEARCHER Siemens reported this vulnerability to CISA. ## 4\. MITIGATIONS Siemens recommends users to update to [Version 3.1.4](https://support.industry.siemens.com/cs/) (login required). Siemens has identified the following specific workarounds and mitigations users can apply to reduce the risk: * For SIPORT MP Versions 3.0.x, apply the latest hotfix for [Version 3.0.3](https://support.industry.siemens.com/cs/document/109771281) * For SIPORT MP Versions 2.2 and later, apply the [SIPORT_CleanUsers tool](https://support.industry.siemens.com/cs/document/109771860). As a general security measure Siemens strongly recommends users protect network access to affected products with appropriate mechanisms. It is advised to follow recommended security practices in order to run the devices in a protected IT environment. Additional information on Industrial Security by Siemens can be found at: <https://www.siemens.com/industrialsecurity> For more information see the [Siemens security advisory](https://cert- portal.siemens.com/productcert/pdf/ssa-978558.pdf). 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.