17 August 2017
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2043 Advisory (ICSA-17-227-01): Advantech WebOP 17 August 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Advantech WebOP Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-12705 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-17-227-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-17-227-01) Advantech WebOP Original release date: August 15, 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 4.8 ATTENTION: Low skill level to exploit. Public exploits are available. Vendor: Advantech Equipment: WebOP Vulnerability: Heap-Based Buffer Overflow AFFECTED PRODUCTS Researchers report that all versions of Advantech WebOP operator panels are affected. IMPACT Successful exploitation of this vulnerability could cause the target device to crash and may allow arbitrary code execution. MITIGATION Advantech was unable to verify the validity of this vulnerability. ZDI recommends that this product be restricted to interact with trusted files only. NCCIC/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, and Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. 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. Public exploits specifically target this vulnerability. This vulnerability is not remotely exploitable. Low skill level is needed to exploit. VULNERABILITY OVERVIEW HEAP-BASED BUFFER OVERFLOW CWE-122 A maliciously crafted project file may be able to trigger a heap-based buffer overflow, which may crash the process and allow an attacker to execute arbitrary code. CVE-2017-12705 has been assigned to this vulnerability. A CVSS v3 base score of 4.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L). RESEARCHER Ariele Caltabiano (kimiya) working with Trend Micro's Zero Day Initiative reported this vulnerability. BACKGROUND Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: North America, East Asia Company Headquarters Location: Taiwan Contact Information For any questions related to this report, please contact ICS-CERT at: Email: firstname.lastname@example.org (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 - --------------------------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 email@example.com 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: 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). 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