05 December 2016
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2851 Advantech SUSIAccess Server Vulnerabilities 5 December 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Advantech SUSIAccess Server Publisher: ICS-CERT Operating System: Windows Impact/Access: Increased Privileges -- Console/Physical Create Arbitrary Files -- Remote with User Interaction Access Confidential Data -- Remote/Unauthenticated Resolution: Alternate Program CVE Names: CVE-2016-9353 CVE-2016-9351 CVE-2016-9349 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-16-336-04 Comment: Advantech no longer supports SUSIAccess. They have developed WISE-PaaS/RMM to replace it. - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-16-336-04) Advantech SUSIAccess Server Vulnerabilities Original release date: December 01, 2016 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/. OVERVIEW Researcher rgod working with Zero Day Initiative (ZDI) has identified an information disclosure, a directory traversal, and a privilege escalation vulnerability in Advantechs SUSIAccess Server. Advantech has produced new software to mitigate these vulnerabilities. These vulnerabilities could be exploited remotely. AFFECTED PRODUCTS The following SUSIAccess Server versions are affected: SUISAccess Server Version 3.0 and prior. IMPACT Successful exploitation of these vulnerabilities may result in file manipulation or arbitrary code execution. Impact to individual organizations depends on many factors that are unique to each organization. NCCIC/ICS-CERT recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. BACKGROUND Advantech is a Taiwan-based company with distribution offices in 21 countries worldwide. The affected product, SUSIAccess Server, is a platform as a service (PaaS) for cloud and Internet of Things (IoT) devices. According to Advantech, SUSIAccess Server is deployed across several sectors including Commercial Facilities, Critical Manufacturing, Energy, and Government Facilities. Advantech estimates that this product is used worldwide. VULNERABILITY CHARACTERIZATION VULNERABILITY OVERVIEW INFORMATION EXPOSURE[a] An attacker could traverse the file system and extract files that can result in information disclosure. CVE-2016-9349[b] has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).[c] PATH TRAVERSAL[d] The directory traversal/file upload error allows an attacker to upload and unpack a zip file. CVE-2016-9351[e] has been assigned to this vulnerability. A CVSS v3 base score of 8.0 has been assigned; the CVSS vector string is (AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H).[f] PERMISSIONS, PRIVILEGES, AND ACCESS CONTROLS[g] The admin password is stored in the system and is encrypted with a static key hard-coded in the program. Attackers could reverse the admin account password for use. CVE-2016-9353[h] has been assigned to this vulnerability. A CVSS v3 base score of 8.4 has been assigned; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).[i] VULNERABILITY DETAILS EXPLOITABILITY These vulnerabilities could be exploited remotely. EXISTENCE OF EXPLOIT No known public exploits specifically target these vulnerabilities. DIFFICULTY An attacker with a low skill would be able to exploit these vulnerabilities. MITIGATION Advantech no longer supports SUSIAccess. They have developed WISE-PaaS/RMM to replace it. To coordinate the purchase of the new software, users should contact Advantech at: http://www.advantech.com/contact/inquiryrequestform?subject=price%2band%2bquotation (link is external) ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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. a. CWE-200:Information Exposure, https://cwe.mitre.org/data/definitions/200.html, web site last accessed December 01, 2016. b. NVD, https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-9349, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. c. CVSS Calculator, https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S..., web site last accessed December 01, 2016. d. CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), https://cwe.mitre.org/data/definitions/22.html, web site last accessed December 01, 2016. e. NVD, https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-9351, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. f. CVSS Calculator, https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S..., web site last accessed December 01, 2016. g. CWE-264: Permissions, Privileges, and Access Controls, https://cwe.mitre.org/data/definitions/264.html, web site last accessed December 01, 2016. h. NVD, https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-9353, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. i. CVSS Calculator, https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S..., web site last accessed December 01, 2016. Contact Information For any questions related to this report, please contact ICS-CERT at: Email: email@example.com (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 firstname.lastname@example.org 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: email@example.com 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 iQIVAwUBWETrFIx+lLeg9Ub1AQinTA//aZ9AFQ34qFKeoAs4d2UwNxgULp0mU1JQ 49XLHYADBiOTjFVCcPneWQ+tzfup8xLfXRVrsDP4xAfcOGuQlqDcWS1Sy15o1i1p FR09KNB5gbV8OPzdQqiYMn3p0mFJcTapXXoWRVM+qWgc0q9Zd9TzPd6RDK32qOWp qYUg0p58/05Rm6he5K7/IZR9zbLYz1T24HA2XfbdvzA+q6otQqOW7XKabqGp1IU0 VtsQMJhtU8krFxRfZOv9EIl4Ybae6MdW5+OJsbIXLK+p/JGXvpJ5lsKqdYDf4GBd Aj1bzysG/6mN6/AzY6fJVLKaH2mC50dPCk3MbLJ5DmTaWG1bn5t9gZlLBf8FMaSb ZyZ8T2vgzOB651zzoiuOjvhheI0v5alzpfABTxPSILpeVdJjewoxnnJFHD/kXkPl 9qkzb8DMqfocFGyWKyDXdMMpl50fIoode5ymjLIVE/YxoAl7wu0294KO059PeLqk OYs8VV5Zj3Vfa5JVmV5u3ObizWy6AJhUA/a6pAbcKASvjyP3dLhU3lwO0f3xKS6w a9ar5kwOt6z1rGESB4BfvStyKUIFN5EC1Iv/lm9xMNOUxYYffx6SssVLPGIvVAwH mBZy8/C/AE3Vw1TOrJ6AHPSe+axylDjSSGGXCB7/rJkKRLEUb/navkZmrmVBJxYH rJYFYpnt9FE= =4pzh -----END PGP SIGNATURE-----