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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.3245 ABB Ellipse patches plaintext credential transmission 20 December 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ABB Ellipse Publisher: ABB Operating System: Network Appliance Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-16731 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-17-353-01 - --------------------------BEGIN INCLUDED TEXT-------------------- CVSS v3 6.5 ATTENTION: Remotely exploitable/low skill level to exploit. Vendor: ABB Equipment: Ellipse Vulnerability: Unprotected Transport of Credentials AFFECTED PRODUCTS ABB reports that the vulnerability affects Ellipse 8.3 through Ellipse 8.9 released prior to December 2017 (including Ellipse Select). IMPACT Successful exploitation of this vulnerability could allow an attacker to discover authentication credentials by sniffing the network traffic. MITIGATION ABB has released the following product updates to mitigate the vulnerability: * Ellipse 8.5.26 Release 7, Dec 2017 * Ellipse 8.6.21 Release 5, Dec 2017 * Ellipse 8.7.18 Release 7, Dec 2017 * Ellipse 8.8.12 Release 7, Dec 2017 * Ellipse 8.9.6 Release 7, Dec 2017 Please see ABB Cyber Security Advisory number Ellipse201703 for more information about this vulnerability, as well as additional mitigations and workarounds at the following location: http://search-ext.abb.com/library/Download.aspx?DocumentID=9AKK107045A7341& Action=Launch NCCIC/ICS-CERT recommends that 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. * 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. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. ICS-CERT 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 in the ICS?CERT Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site. Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to ICS-CERT for tracking and correlation against other incidents. No known public exploits specifically target this vulnerability. VULNERABILITY OVERVIEW UNPROTECTED TRANSPORT OF CREDENTIALS CWE-523 A vulnerability exists in the authentication of Ellipse to LDAP/AD using the LDAP protocol. An attacker could exploit the vulnerability by sniffing local network traffic, allowing the discovery of authentication credentials. CVE-2017-16731 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:H/ I:N/A:N). RESEARCHER ABB self-reported the vulnerability to ICS-CERT. BACKGROUND Critical Infrastructure Sectors: Critical Manufacturing, Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland 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. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. 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: 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). 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