Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1993 Solar Controls Heating Control Downloader (HCDownloader) 11 August 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Solar Controls Heating Control Downloader (HCDownloader) Publisher: ICS-CERT Operating System: Windows Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Resolution: Mitigation CVE Names: CVE-2017-9646 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-17-222-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-17-222-02) Solar Controls Heating Control Downloader (HCDownloader) Original release date: August 10, 2017 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/. CVSS v3 7.8 ATTENTION: Low skill level to exploit. Vendor: Solar Controls Equipment: Heating Control Downloader (HCDownloader) Vulnerability: Uncontrolled Search Path Element AFFECTED PRODUCTS The following versions of Solar Controls’ Heating Control Downloader (HCDownloader) are affected: HCDownloader, Version 1.0.1.15 and prior. IMPACT Successful exploitation of this vulnerability may allow arbitrary code execution. MITIGATION Solar Controls has not responded to requests to coordinate with NCCIC/ICS-CERT. 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. In addition, ICS-CERT 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 for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploits specifically target this vulnerability. This vulnerability is not remotely exploitable. VULNERABILITY OVERVIEW UNCONTROLLED SEARCH PATH ELEMENT CWE-427 An uncontrolled search path element has been identified, which could allow an attacker to execute arbitrary code on a target system using a malicious DLL file. CVE-2017-9646 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). RESEARCHER Karn Ganeshen reported this vulnerability to ICS-CERT. BACKGROUND Critical Infrastructure Sector(s): Energy Countries/Areas Deployed: Unknown Company Headquarters Location: Czech Republic Contact Information For any questions related to this report, please contact ICS-CERT at: Email: ics-cert@hq.dhs.gov (link sends e-mail) Toll Free: 1-877-776-7585 International Callers: (208) 526-0900 For industrial control systems security information and incident reporting: http://ics-cert.us-cert.gov ICS-CERT 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: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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 iQIVAwUBWY0TOIx+lLeg9Ub1AQi17g//emqQSal3Tw32lmZC9BQ+Cm8sO5tz2JmN njhSctEFcBbkr8JXf+omkVYHlZ+9ccfkgQtSirTCiatAzI73YBxVADP1SW/eeiTl 8lCIUW3l+YOOyRZFUxEreQgHeqg82NWTvvm4ni/1YFnpo7bVfKB1SwKtHt169Zbi tUIns/hm3S86mKCFjS+xgJkIGBvLRPBQ/gtzxWYSLenDIdfBfCIkrx6TSKNEorIU AdhjruGNc4GMAC9QUJP/3Sd16dpsBSM7X7oSoCAYHS0Gdu1YNi+idufyL7LiQOoY m0J08VCZf/yBOjileFndSoiHaTRjfflktPgovtcw8NNRucB2sRAqNrJPe1z5ia91 qNym0Gv900su4DON8phMBYXLOQYZ0dx+NyZOAaBsMkEC2oaB9a2QpbOiQBNRCxTF zyILp9Pe6NnDPAmCNSDyqp9YyOgglf+2tPwRXDcFc20D6tXycv1KnQZpIVTAqCxL LFYburOCZykTy0WPGacUngjpb+XO6iy65Qv+6TnIWNa2kl4/QxBjrZGT0BjTO+X9 LOPD4+OEZXjcUbnL4RmzG8Gr7v3oktEf2yrvtw4UVhYSerKvxu3fCRYMqj3dqybV NVpRKh09MC6C6sksOH25Vz6KQdBYClKsmA8pkUVqEKPXdUipIrCLjqyc9wulIFI0 aqUgaarX4Q4= =NLMo -----END PGP SIGNATURE-----