Horner Automation Cscape

# ICS Advisory (ICSA-19-290-02) ## Horner Automation Cscape Original release date: October 17, 2019 | Last revised: October 23, 2019 [Print Document](javascript:window.print\(\);) [Tweet](https://twitter.com/share?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-19-290-02) [Like Me](https://www.facebook.com/sharer.php?u=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-19-290-02) [Share](http://www.addthis.com/bookmark.php?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-19-290-02) ### 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:** Low skill level to exploit * **Vendor:** Horner Automation * **Equipment:** Cscape * **Vulnerabilities:** Improper Input Validation, Out-of-bounds Write ## 2\. RISK EVALUATION Successful exploitation of these vulnerabilities could crash the device being accessed, which may allow the attacker to access information and execute arbitrary code. ## 3\. TECHNICAL DETAILS ### 3.1 AFFECTED PRODUCTS The following versions of Cscape, a control system application programming software, are affected: * Cscape 9.90 and prior ### 3.2 VULNERABILITY OVERVIEW #### 3.2.1 [IMPROPER INPUT VALIDATION CWE-20](https://cwe.mitre.org/data/definitions/20.html) An improper input validation vulnerability has been identified that may be exploited by processing files lacking user input validation. This may allow an attacker to access information and remotely execute arbitrary code. [CVE-2019-13541](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-13541) has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is ([AV:L/AC:L/PR:N/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:N/UI:R/S:U/C:H/I:H/A:H)). #### 3.2.2 [OUT-OF-BOUNDS WRITE CWE-787](https://cwe.mitre.org/data/definitions/787.html) Improper validation of data may cause the system to write outside the intended buffer area, which may allow arbitrary code execution. [CVE-2019-13545](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-13545) has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is ([AV:L/AC:L/PR:N/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:N/UI:R/S:U/C:H/I:H/A:H)). ### 3.3 BACKGROUND * **CRITICAL INFRASTRUCTURE SECTORS:** Critical Manufacturing * **COUNTRIES/AREAS DEPLOYED:** Worldwide * **COMPANY HEADQUARTERS LOCATION:** United States ### 3.4 RESEARCHER Francis Provencher of Protek Research Lab working with Trend Micro's Zero Day Initiative reported these vulnerabilities to CISA. ## 4\. MITIGATIONS Horner Automation recommends affected users update to Cscape Version 9.90 SP1 or later, which is available for download at: [www.heapg.com](https://hornerautomation.com/) [www.horner-apg.com](https://www.hornerautomation.eu/) (outside of the Americas) Users with questions regarding their specific Cscape installations should contact a Horner Automation service support team: [techsppt@heapg.com](mailto:techsppt@heapg.com) +1-317-916-4274 [tech.support@hornerirl.ie](mailto:tech.support@hornerirl.ie) +353-(0)21-4321266 ext. 202 (outside of the Americas) CISA recommends users take the following measures to protect themselves from social engineering attacks: * Do not click web links or open unsolicited attachments in email messages. * Refer to [Recognizing and Avoiding Email Scams](https://www.us-cert.gov/sites/default/files/publications/emailscams_0905.pdf) for more information on avoiding email scams. * Refer to [Avoiding Social Engineering and Phishing Attacks](https://www.us-cert.gov/ncas/tips/ST04-014) for more information on social engineering attacks. 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 these vulnerabilities. These vulnerabilities are not exploitable remotely.