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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0062 Multiple vulnerabilities patched in DOPSoft 5 January 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Delta Industrial Automation Screen Editor (DOPSoft) Publisher: ICS-CERT Operating System: Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2017-16751 CVE-2017-16749 CVE-2017-16747 CVE-2017-16745 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-18-004-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-18-004-01) Delta Electronics Delta Industrial Automation Screen Editor Original release date: January 04, 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/. - ------------------------------------------------------------------------------- CVSS v3 5.5 ATTENTION: Low skill level to exploit. Vendor: Delta Electronics, Incorporated (Delta Electronics) Equipment: Delta Industrial Automation Screen Editor Vulnerabilities: Stack-based Buffer Overflow, Use-after-Free, Out-of-bounds Write, Type Confusion AFFECTED PRODUCTS The following versions of Delta Industrial Automation Screen Editor, a graphical user interface (GUI), are affected: * Delta Industrial Automation Screen Editor, Version 2.00.23.00 or prior. IMPACT Successful exploitation of these vulnerabilities may allow an attacker to remotely execute arbitrary code. MITIGATION Delta Electronics recommends affected users update to the latest version of DOPSoft Version 2, which is available for download at: http://www.deltaww.com/Products/PluginWebUserControl/ downloadCenterCounter.aspx?DID=9313&DocPath=1&hl=en-US. Delta Industrial Automation Screen Editor Version 2.00.23.00 has been removed from Delta Electronics' web site and replaced with DOPSoft, Version 2. Delta Electronics also recommends that users restrict the interaction with the application to trusted files. 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. * 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. No known public exploits specifically target these vulnerabilities. These vulnerabilities are not remotely exploitable. VULNERABILITY OVERVIEW STACK-BASED BUFFER OVERFLOW CWE-121 Stack-based buffer overflow vulnerabilities caused by processing specially crafted .dbp files may allow an attacker to remotely execute arbitrary code. CVE-2017-16751 has been assigned to this vulnerability. A CVSS v3 base score of 5.5 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:N /I:N/A:H). USE-AFTER-FREE CWE-416 Specially crafted .dbp files could exploit a use-after-free vulnerability. CVE-2017-16749 has been assigned to this vulnerability. A CVSS v3 base score of 5.5 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:N /I:N/A:H). OUT-OF-BOUNDS WRITE CWE-787 Specially crafted .dbp files may cause the system to write outside the intended buffer area. CVE-2017-16747 has been assigned to this vulnerability. A CVSS v3 base score of 5.5 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:N /I:N/A:H). ACCESS OF RESOURCE USING INCOMPATIBLE TYPE ('TYPE CONFUSION') CWE-843 An access of resource using incompatible type ("type confusion") vulnerability may allow an attacker to execute remote code when processing specially crafted .dbp files. CVE-2017-16745 has been assigned to this vulnerability. A CVSS v3 base score of 5.5 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:N /I:N/A:H). RESEARCHER Steven Seeley of Source Incite reported these vulnerabilities to ICS-CERT. BACKGROUND Critical Infrastructure Sector: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Taiwan - --------------------------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. 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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 iQIVAwUBWk7TVox+lLeg9Ub1AQhI3A//UnEQbE+8uIX1NhPGCRuSwSsUp6eYOxiw OkG4yabaJaNVBmqlAKCvVrbwKcXLDMD5qzzxNLRt9M/Ep+JCHRFCdxPG5791nZ62 4ELdEHQk43ebArbURllrahjVueLqZ63xx4khOcXJwufgyo53aiSXOBWksBEyonlq U9Cps1y34RRrUp2DBXUwq098SXP2HreALBwWfRN97+Z/LI/KHLiJTO5Qyp2lvh5D YnlVNc9BDunkPvl1julWE/gR/blwFgc2/sbJWdSjPZs6z4J51rcBKydn8wDWkv8I ZxkS0ilr/hkXs/27PFb2564Qduj8DMxMOaLvui3QRAsCwaBU3rqX3CPmMQA5XVQF wavcBj7Ygy0Hgbq2dv98CIaZCm0oiCbsDDw0/zbeyPz9BqJF9ZfkFAwohOy+VPjO VsSpw4zxe18fWz9NcoaJhy36aOtPQ5ACfG77mgL1QCdQ5nImtwhNRC8J1hKkZC/k L0yShARFokzp3lEuaR0an1iFHN4i5ZcCUzskV+bBCNz5hEQ18F7UXyDztbvz+yPp E5iME2VPAR8tGMqHLiutkfdnwr9jjFVps1XRnxLzcAvGCq/xOV+WDi2Y2oKK1f0k Nt1OgWqijRssZcwLlsvxhVcyE83psTemjU1yg9nUr+iERarifoln00QHxg6tWbQJ 5KoGmTZv9cI= =npIG -----END PGP SIGNATURE-----