Horner Automation Cscape Improper Input Validation (CVE-2018-19005)

# ICS Advisory (ICSA-18-354-01) ## Horner Automation Cscape Original release date: December 20, 2018 [Print Document](javascript:window.print\(\);) [Tweet](https://twitter.com/share?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-18-354-01) [Like Me](https://www.facebook.com/sharer.php?u=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-18-354-01) [Share](http://www.addthis.com/bookmark.php?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-18-354-01) ### 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 6.6** * **ATTENTION:** Low skill level to exploit * **Vendor:** Horner Automation * **Equipment:** Cscape * **Vulnerability:** Improper Input Validation ## 2\. RISK EVALUATION Successful exploitation of this vulnerability could crash the device being accessed, allow the attacker to read confidential information, and may allow an attacker to remotely execute arbitrary code. ## 3\. TECHNICAL DETAILS ### 3.1 AFFECTED PRODUCTS The following versions of Cscape, a Control System Application programming software, are affected: * Cscape Version 9.80.75.3 SP3 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 specially crafted POC files lacking user input validation. This may allow an attacker to read confidential information and remotely execute arbitrary code. [CVE-2018-19005](http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-19005) has been assigned to this vulnerability. A CVSS v3 base score of 6.6 has been calculated; the CVSS vector string is ([AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H)). ### 3.3 BACKGROUND * **CRITICAL INFRASTRUCTURE SECTORS:** Critical Manufacturing * **COUNTRIES/AREAS DEPLOYED:** Worldwide * **COMPANY HEADQUARTERS LOCATION:** United States ### 3.4 RESEARCHER rgod and mdm of 9SG Security Team working with Trend Micro's Zero Day Initiative reported this vulnerability to NCCIC. ## 4\. MITIGATIONS Horner Automation states that only the Cscape programming software is affected. The operation of any OCS device programmed with an affected version of Cscape is not compromised. Horner Automation recommends affected users update to the latest version of Cscape (Version 9.80 SP4), which is available for download at: [www.heapg.com](http://www.heapg.com) or [www.horner- apg.com](http://www.horner-apg.com) outside of the Americas. Users with questions regarding specific Cscape installations should contact a local Horner Automation service support team at either: [techsppt@heapg.com](mailto:techsppt@heapg.com) or (+1-317-916-4274) or [tech.support@hornerirl.ie](mailto:tech.support@hornerirl.ie) or (+353-(0)21-4321266 ext. 202) outside of the Americas. NCCIC recommends that 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](/reading_room/emailscams_0905.pdf) for more information on avoiding email scams. * Refer to [Avoiding Social Engineering and Phishing Attacks](/cas/tips/ST04-014.html) for more information on social engineering attacks. 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 this vulnerability. This vulnerability is not exploitable remotely.