Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1638 Advisory (ICSA-18-151-01) Delta Industrial Automation DOPSoft 1 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Delta Industrial Automation DOPSoft Publisher: ICS-CERT Operating System: Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-10623 CVE-2018-10621 CVE-2018-10617 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-18-151-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-18-151-01) Delta Industrial Automation DOPSoft Original release date: May 31, 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/. 1. EXECUTIVE SUMMARY CVSS v3 7.3 ATTENTION: Exploitable remotely/low skill level to exploit Vendor: Delta Electronics Equipment: Delta Industrial Automation DOPSoft Vulnerabilities: Out-of-bounds Read, Heap-based Buffer Overflow, Stack-based Buffer Overflow 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow a remote attacker to read sensitive information, execute arbitrary code, and/or crash the application. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of DOPSoft, a Human Machine Interface (HMI) editing software, are affected: DOPSoft Version 4.00.04 and prior. 3.2 VULNERABILITY OVERVIEW 3.2.1 OUT-OF-BOUNDS READ CWE-125 The application performs read operations on a memory buffer where the position can be determined by a value read from a .dpa file. This may cause improper restriction of operations within the bounds of the memory buffer, allow remote code execution, alter the intended control flow, allow reading of sensitive information, or cause the application to crash. CVE-2018-10623 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L). 3.2.2 HEAP-BASED BUFFER OVERFLOW CWE-122 The application utilizes a fixed-length heap buffer where a value larger than the buffer can be read from a .dpa file into the buffer, causing the buffer to be overwritten. This may allow remote code execution or cause the application to crash. CVE-2018-10617 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L). 3.2.3 STACK-BASED BUFFER OVERFLOW CWE-121 The application utilizes a fixed-length stack buffer where a value larger than the buffer can be read from a .dpa file into the buffer, causing the buffer to be overwritten. This may allow remote code execution or cause the application to crash. CVE-2018-10621 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L). 3.3 BACKGROUND o Critical Infrastructure Sectors: Critical Manufacturing o Countries/Areas Deployed: Worldwide o Company Headquarters Location: Taiwan 3.4 RESEARCHER B0nd @garagehackers working with Trend Micros Zero Day Initiative reported the vulnerabilities to NCCIC. 4. MITIGATIONS Delta Electronics recommends affected users update to the latest version found at: http://www.deltaww.com/Products/PluginWebUserControl/downloadCenterCounter.aspx?DID=9063&DocPath=1&hl=en-US Delta Electronics also recommends affected users restrict the interaction with the application to trusted files. NCCIC recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should: o Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet. o Locate control system networks and remote devices behind firewalls, and isolate them from the business network. o 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. NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. NCCIC 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 on the ICS-CERT website in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation to other incidents. NCCIC also recommends that users take the following measures to protect themselves from social engineering attacks: o Do not click web links or open unsolicited attachments in email messages. o Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. o Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploits specifically target these vulnerabilities. - --------------------------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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWxCFDGaOgq3Tt24GAQg/Zg//UXIULLpC51L/9ik2L7FuKBiHomypAm4F k+uz0f4r4apxUINGYbJu6GFnskDntxFq2AmHhYrvJZUckD31wZk1hCZ9YXJkckhm FEEAtLcbloutFC19MS+PRNXOnWiYw4IpKUla6Oz6wvucjNYpybfm4D6v/LK3ofKh l2cYXL2woP4Lccb2adACAY+MctV0G9T1RBNmti5a/evPyqxDajNScKbNGxll386x S4YKu62VU0b16uwrAS0/rqDnMkVjV8oiFg9rpvkH8szEDdT6W3Bvs+0fYI2atx6V R2kQM958e5UwTCS5/MpfHt2eHTs8rsvS0P6cln7iwfCMb4f1FF6C8BZmQtXk9vka s/mO2Q7FTDM/QSe/Zif9ACICQe23/fczz0SGsjwYKtOt3ULcvZyl552Cxkr0f0gl Lb8dfLAg5grs37r0lAGlADP+TYYdJ1MKycYbo8B6032t0p3oWxqgPzmvhLkaHHSt 6wGpechMnleb323KsLaTb6+WDbEwVhFWPAJe3Q0ITWUtAGRPySkZ9ai6HYUsNspy 9SntQ/Ify8T0/CGQrzXB0dl4JetfLT5pqnkU100LV/ooN97Z23GskNsRxP55zUqq B+u042KtS+Eeei1mmKdu5MR+7y/OOsR4s+zk6vRnZ4Jt9QVKM4T7s/5Hfx1w1Ce1 gCkvhy7k7Xs= =bRAO -----END PGP SIGNATURE-----