05 April 2019
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1152 Omron CX-Programmer 5 April 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Omron CX-Programmer Publisher: ICS-CERT Operating System: Network Appliance Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2019-6556 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-19-094-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-19-094-01) Omron CX-Programmer Original release date: April 04, 2019 Legal Notice All information products included in http://ics-cert.us-cert.gov 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 http://www.us-cert.gov/tlp/ 1. EXECUTIVE SUMMARY o CVSS v3 6.6 o ATTENTION: Low skill level to exploit o Vendor: Omron o Equipment: CX-Programmer within CX-One o Vulnerability: Use After Free 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to execute code under the privileges of the application. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following version of CX-Programmer within CX-One is affected: o CX-Programmer v9.70 and prior o Common Components January 2019 and prior 3.2 VULNERABILITY OVERVIEW 3.2.1 USE AFTER FREE CWE-416 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-2019-6556 has been assigned to this vulnerability. A CVSS v3 base score of 6.6 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:L/ I:L/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Japan 3.4 RESEARCHER Esteban Ruiz (mr_me) of Source Incite, working with Trend Micro's Zero Day Initiative, reported this vulnerability to NCCIC. 4. MITIGATIONS Omron has released an updated version of CX-One to address the vulnerability. This release is available through the CX-One auto-update service. o CX-Programmer Version 9.7.1 o Common Components April 2019 NCCIC recommends that users take the following measures to protect themselves from social engineering attacks: o Do not click web links or open unsolicited attachments in email messages. o Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. o Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. NCCIC also recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should: o Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet . o Locate control system networks and remote devices behind firewalls, and isolate them from the business network. o 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 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 . Additional mitigation guidance and recommended practices are publicly available on the ICS-CERT website in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies . 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. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXKaW9maOgq3Tt24GAQhs1w/9FBZlqpLfBJJm22KIJNEUKYec+NoO1IZS 4U2vorIbHrL0WOASYnswAl06SBl0QlS7aFZ9BVw2FntwvT2gNLL7m6wAHOrRud1Q SfGAkgDn5v4H5jW5J5rTzgL2AGIXIy3bxY9Lf43Kn7KmwPJ1RC4dcw6bcHL4+mzV mBCdPYFnPubMgi0QrLNYRp5e150K/znu6KdY3Y3ToWKw6QGfhSPyPKgIF/2vBnei TVh86IGn8AdsxoWh0e4jV42UXteZXhrVWX7yypn+FLJIy+YTHaWOA36CKVR8J0iV ldumgnQgVyLrEThjQwAlZfgOlhOQe5rhCBDS367ewMnpDyWx9RDV7zYPz8wF1fIE 4lZiO5x6FQ3lWxHGAHRMwlYj+dO1VtkGDHdju4rBw8KRlQu3SFDR7svV2d1y7ikN +yCFAHGL7rJWzndiJmt7Hz8ZKP6NTcBJS7NaX+9DQo0qrlcnDJhessOJ4cAIr9jT +x9+Tpnnxw9oZKSJ+rbKjePUFPgoDGHaMkgOyIuQHVrJxcuvfMzWSBV5w0Itl3AE SLT7XLOuheflj2CH+2OkNIlsqS/QZJs57XitXF/59l9bYCxi6RgYfLvcdYnVcDb9 uG4gbFciQ7nJBGDWBSE+BdHtrs+ujHZ3fAXc1nwU0fldXXiXJegyzrrdCubhLy5z xh60us4mQLo= =Tgp9 -----END PGP SIGNATURE-----