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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.2932 Advisory (ICSA-18-270-01) Emerson AMS Device Manager 1 October 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Emerson AMS Device Manager Publisher: ICS-CERT Operating System: Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-14808 CVE-2018-14804 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-18-270-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-18-270-01) Emerson AMS Device Manager Original release date: September 27, 2018 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 10.0 o ATTENTION: Exploitable remotely/low skill level to exploit o Vendor: Emerson o Equipment: AMS Device Manager o Vulnerabilities: Improper Access Control, Improper Privilege Management 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow arbitrary remote code execution and malware injection. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of AMS Device Manager, an Asset Management System, are affected: o AMS Device Manager: v12.0 to v13.5 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER ACCESS CONTROL CWE-284 A specially crafted script may be run that allows arbitrary remote code execution. CVE-2018-14804 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/ C:H/I:H/A:H). 3.2.2 IMPROPER PRIVILEGE MANAGEMENT CWE-269 Non-administrative users are able to change executable and library files on the affected products. CVE-2018-14808 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:R/S:C/C:H /I:H/A:H). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Chemical, Energy o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: United States 3.4 RESEARCHER Sergey Temnikov of Kaspersky Lab and Emerson discovered and reported these vulnerabilities to NCCIC. 4. MITIGATIONS Emerson recommends users patch the affected products listed below: AMS Device Manager: v12.0 to v13.5 Software patches are available to users with access to the Guardian Support Portal at: https://guardian.emersonprocess.com/. Please refer to the Knowledge Base Articles for AMS NK-1700-0324, NK-1700-0252 and DeltaV NK-1800-0880 (DSN 18006) for more information. Vulnerability CVE-2018-14808 cannot be exploited if application whitelisting is implemented since it would prevent files from being overwritten. To limit exposure to these and other vulnerabilities, Emerson recommends deploying and configuring AMS Device Manager as described in the AMS Device Manager Installation Guide which is available in Emerson's Guardian Support Portal. NCCIC 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 these vulnerabilities. Contact Information For any questions related to this report, please contact the NCCIC at: Email: NCCICCUSTOMERSERVICE@hq.dhs.gov Toll Free: 1-888-282-0870 For industrial control systems cybersecurity information: http:// ics-cert.us-cert.gov or incident reporting: https://ics-cert.us-cert.gov/Report-Incident? The NCCIC continuously strives to improve its products and services. You can help by choosing one of the links below to provide feedback about this product. - --------------------------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. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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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: auscert@auscert.org.au 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 iQIVAwUBW7FTdmaOgq3Tt24GAQg1URAAxWZzyBOVkYXjqqHG9ksavun3vsUo/ph8 etGwLTEDizRcnPDoq76+78FL0n3eS6BkJTqzJJ3OpqIdki71aCRStRfPPVTRBz05 nNBgQZ6RMNMVJt381is82qJxTvHaxEfqyLC5Wf4ytZ3MF7sWObAsby/VHRQ8RB2D Vq3hDJFXLKjRJfxDvJlvsGr8qjLC25DJJcXAiCSYSDzM2l+RilsR8qatryRXNCpr UsKltTvIkixuGWTb00Avig0pptGhKjw1b6AR6NN482TR9JZnuRLDbVWbkBfB3q3W 0lgH+I68y74uFbUC3pK4C25r9hw4RawQ2WbeIBe5ButfqNVO2osIZK1Go1msvvvR oqlO/68n4AowQ4wYdh/3icTkOrLrFuhrKhR0Py5Pn561MpjZoZ4ignzMd0kmeuGq 17tlpF5e4xe5ZWr9URqAX6AJv3ZITMet/mSi03jRphP/iLfoBP3JW4nb7U7LKAmw UNDNB+806d7yGyVWANGRemnZfE9Js/gQsmq9bmfcUhkFyfOQb7NDlnvGWvTonMwa jQr7nYqDBCsg0+KKIMR3FtPdHowoRxpfEKHRDT9mro5vfXpVQq/kiYqTp+IvDLAK I7JF1QOI5k1A8OOZw4E4aIae5RdoD5CfFQVpJ5njv0EJEZBgvJHDAFmWRQsynpj6 clUE+/E5LcA= =3MyN -----END PGP SIGNATURE-----