Omron CX-Supervisor (Update A) Code Injection, Command Injection, Use After Free, Type Confusion, Access of Uninitialized Pointer, Out-of-bounds Read (CVE-2018-19020 CVE-2018-19018 CVE-2018-19019 CVE-2018-19017 CVE-2018-19015 CVE-2018-19013 CVE-2018-19011 )

# ICS Advisory (ICSA-19-017-01) ## Omron CX-Supervisor (Update A) Original release date: January 17, 2019 | Last revised: February 07, 2019 [Print Document](javascript:window.print\(\);) [Tweet](https://twitter.com/share?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-19-017-01) [Like Me](https://www.facebook.com/sharer.php?u=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-19-017-01) [Share](http://www.addthis.com/bookmark.php?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-19-017-01) ### 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 7.3** * **ATTENTION** : Low skill level to exploit * **Vendor:** Omron * **Equipment:** CX-Supervisor **\--------- Begin Update A Part 1 of 3 --------** * **Vulnerabilities:** Code Injection, Command Injection, Use After Free, Type Confusion, Access of Uninitialized Pointer, Out-of-bounds Read **\--------- End Update A Part 1 of 3 ----------** ## 2\. UPDATE INFORMATION This updated advisory is a follow-up to the original advisory titled ICSA-19-017-01 Omron CX-Supervisor that was published January 17, 2019, on the NCCIC/ICS-CERT website. ## 3\. RISK EVALUATION Successful exploitation of these vulnerabilities could result in a denial-of- service condition, and/or allow an attacker to achieve code execution with privileges within the context of the application. ## 4\. TECHNICAL DETAILS ### 4.1 AFFECTED PRODUCTS The following versions of CX-Supervisor are affected: * CX-Supervisor: Versions 3.42 and prior ### 4.2 VULNERABILITY OVERVIEW **4.2.1 [IMPROPER CONTROL OF GENERATION OF CODE ('CODE INJECTION') CWE-94](https://cwe.mitre.org/data/definitions/94.html)** The application can execute code that has been injected into a project file. An attacker could exploit this to execute code under the privileges of the application. [CVE-2018-19011](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-19011) has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is ([AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H)). **4.2.2 [IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN A COMMAND ('COMMAND INJECTION') CWE-77](https://cwe.mitre.org/data/definitions/77.html)** An attacker could inject commands to delete files and/or delete the contents of a file on the device through a specially crafted project file. [CVE-2018-19013](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-19013) has been assigned to this vulnerability. A CVSS v3 base score of 5.0 has been calculated; the CVSS vector string is ([AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:H)). **4.2.3 [IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN A COMMAND ('COMMAND INJECTION') CWE-77](https://cwe.mitre.org/data/definitions/77.html)** An attacker could inject commands to launch programs and create, write, and read files on the device through a specially crafted project file. An attacker could exploit this to execute code under the privileges of the application. [CVE-2018-19015](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-19015) has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is ([AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H)). **4.2.4 [USE AFTER FREE CWE-416](https://cwe.mitre.org/data/definitions/416.html)** Several use after free vulnerabilities have been identified. When processing project files, the application fails to check if it is referencing freed memory. An attacker could use a specially crafted project file to exploit and execute code under the privileges of the application. [CVE-2018-19017](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-19017) has been assigned to these vulnerabilities. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is ([AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H)). **4.2.5 [ACCESS OF RESOURCE USING INCOMPATIBLE TYPE ('TYPE CONFUSION') CWE-843](https://cwe.mitre.org/data/definitions/843.html)** A type confusion vulnerability exists when processing project files. An attacker could use a specially crafted project file to exploit and execute code under the privileges of the application. [CVE-2018-19019](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-19019) has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is ([AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H)). **\--------- Begin Update A Part 2 of 3 --------** **4.2.6 [ACCESS OF UNINITIALIZED POINTER CWE-824](https://cwe.mitre.org/data/definitions/824.html)** An access of uninitialized pointer vulnerability could lead to type confusion when processing project files. An attacker could use a specially crafted project file to exploit and execute code under the privileges of the application. [CVE-2018-19018](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-19018) has been assigned to this vulnerability. A CVSS v3 base score of 6.7 has been calculated; the CVSS vector string is ([AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H)). **4.2.7 [OUT-OF-BOUNDS READ CWE-125](https://cwe.mitre.org/data/definitions/125.html)** When processing project files and tampering with the value of an offset, an attacker can force the application to read a value outside of an array. [CVE-2018-19020](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-19020) has been assigned to this vulnerability. A CVSS v3 base score of 2.8 has been calculated; the CVSS vector string is ([AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N)) **\--------- End Update A Part 2 of 3 ----------** ### 4.3 BACKGROUND * **CRITICAL INFRASTRUCTURE SECTORS:** Energy * **COUNTRIES/AREAS DEPLOYED:** Worldwide * **COMPANY HEADQUARTERS LOCATION:** Japan ### 4.4 RESEARCHER **\--------- Begin Update A Part 3 of 3 --------** Michael DePlante of Trend Micro's Zero Day Initiative and Esteban Ruiz (mr_me) of Source Incite, working with Trend Micro's Zero Day Initiative, reported these vulnerabilities to NCCIC. **\--------- End Update A Part 3 of 3 ----------** ## 5\. MITIGATIONS Omron has released Version 3.5.0.11 of CX-Supervisor to address the reported vulnerabilities. To be protected, development projects must be upgraded and saved in the new format, then rebuilt in the latest 3.5.0.11 format. Information on downloading the latest version of CX-Supervisor can be found at the following location: [https://www.myomron.com/index.php?action=kb&article=1711](https://www.myomron.com/index.php?action=kb&article=1711) NCCIC 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](/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. 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](/ics/content/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](/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-CERT website](/ics/) in the Technical Information Paper, [ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies](/ics/tips/ICS-TIP-12-146-01B). 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. These vulnerabilities are not exploitable remotely.