Delta Electronics Delta Industrial Automation Screen Editor Stack-based Buffer Overflow, Use-after-Free, Out-of- (CVE-2017-16745 CVE-2017-16747 CVE-2017-16749 CVE-2017-16751 )

# ICS Advisory (ICSA-18-004-01) ## Delta Electronics Delta Industrial Automation Screen Editor Original release date: January 04, 2018 | Last revised: January 05, 2018 [Print Document](javascript:window.print\(\);) [Tweet](https://twitter.com/share?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-18-004-01) [Like Me](https://www.facebook.com/sharer.php?u=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-18-004-01) [Share](http://www.addthis.com/bookmark.php?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-18-004-01) ### Legal Notice All information products included in [https://us-cert.gov/ics](/ics) 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 [https://www.us- cert.gov/tlp/](/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://](http://www.deltaww.com/Products/PluginWebUserControl/downloadCenterCounter.aspx?DID=9313&DocPath=1&hl=en- US)[www.deltaww.com/Products/PluginWebUserControl/downloadCenterCounter.aspx?DID=9313&DocPath=1&hl=en- US](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](/reading_room/emailscams_0905.pdf) for more information on avoiding email scams. * Refer to [Avoiding Social Engineering and Phishing Attacks](/cas/tips/ST04-014.html) 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](/ics/content/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.](/sites/default/files/recommended_practices/NCCIC_ICS- CERT_Defense_in_Depth_2016_S508C.pdf) 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](/ics/tips/ICS- TIP-12-146-01B), that is available for download from the [ICS-CERT web site](/ics/). 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](https://cwe.mitre.org/data/definitions/121.html) Stack-based buffer overflow vulnerabilities caused by processing specially crafted .dpb files may allow an attacker to remotely execute arbitrary code. [CVE-2017-16751](http://web.nvd.nist.gov/view/vuln/detail?vulnId=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](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)). ## [USE-AFTER-FREE CWE-416](https://cwe.mitre.org/data/definitions/416.html) Specially crafted .dpb files could exploit a use-after-free vulnerability. [CVE-2017-16749](http://web.nvd.nist.gov/view/vuln/detail?vulnId=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](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)). ## [OUT-OF-BOUNDS WRITE CWE-787](https://cwe.mitre.org/data/definitions/787.html) Specially crafted .dpb files may cause the system to write outside the intended buffer area. [CVE-2017-16747](http://web.nvd.nist.gov/view/vuln/detail?vulnId=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](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/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](https://cwe.mitre.org/data/definitions/843.html) An access of resource using incompatible type ('type confusion') vulnerability may allow an attacker to execute remote code when processing specially crafted .dpb files. [CVE-2017-16745](http://web.nvd.nist.gov/view/vuln/detail?vulnId=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](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/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