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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2416 Moxa ioLogik E1200 Series Vulnerabilities 14 October 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Moxa ioLogik E1200 Series Vulnerabilities Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Access Privileged Data -- Remote/Unauthenticated Cross-site Request Forgery -- Remote with User Interaction Cross-site Scripting -- Remote with User Interaction Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2016-8379 CVE-2016-8372 CVE-2016-8359 CVE-2016-8350 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-16-287-05 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-16-287-05) Moxa ioLogik E1200 Series Vulnerabilities Original release date: October 13, 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 Alexandru Ariciu of Applied Risk has identified vulnerabilities in Moxa's ioLogik E1200 series application. Moxa has produced a new edition of the firmware to mitigate these vulnerabilities. Alexandru Ariciu has tested the firmware to validate that it resolves the vulnerabilities. These vulnerabilities could be exploited remotely. Exploits that target these vulnerabilities are known to be publicly available. AFFECTED PRODUCTS Moxa reports that the vulnerabilities affect the following products: ioLogik E1210, firmware Version V2.4 and prior, ioLogik E1211, firmware Version V2.3 and prior, ioLogik E1212, firmware Version V2.4 and prior, ioLogik E1213, firmware Version V2.5 and prior, ioLogik E1214, firmware Version V2.4 and prior, ioLogik E1240, firmware Version V2.3 and prior, ioLogik E1241, firmware Version V2.4 and prior, ioLogik E1242, firmware Version V2.4 and prior, ioLogik E1260, firmware Version V2.4 and prior, and ioLogik E1262, firmware Version V2.4 and prior. IMPACT An attacker who exploits these vulnerabilities may be able to remotely execute arbitrary code, modify parameters and settings, or reset the device. 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 Moxa is a Taiwan-based company that maintains offices in several countries around the world, including the US, UK, India, Germany, France, China, Russia, and Brazil. The affected product, ioLogik E1200 series, is a remote I/O for use in monitoring. According to Moxa, ioLogik is deployed across several sectors, including Commercial Facilities and Energy. Moxa estimates that these products are used primarily in the United States, Europe, and Asia. VULNERABILITY CHARACTERIZATION VULNERABILITY OVERVIEW CROSS-SITE SCRIPTING[a] The web application fails to sanitize user input, which may allow an attacker to inject script or execute arbitrary code. CVE-2016-8359[b] has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).[c] INSUFFICIENTLY PROTECTED CREDENTIALS[d] A password is transmitted in a format that is not sufficiently secure. CVE-2016-8372[e] has been assigned to this vulnerability. A CVSS v3 base score of 8.1 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).[f] WEAK PASSWORD REQUIREMENTS[g] Users are restricted to using short passwords. CVE-2016-8379[h] has been assigned to this vulnerability. A CVSS v3 base score of 8.1 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).[i] CROSS-SITE REQUEST FORGERY[j] The web application may not sufficiently verify whether a request was provided by a valid user. CVE-2016-8350[k] 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).[l] VULNERABILITY DETAILS EXPLOITABILITY These vulnerabilities could be exploited remotely. EXISTENCE OF EXPLOIT Detailed vulnerability information is publicly available that could be used to develop an exploit that targets these vulnerabilities. DIFFICULTY An attacker with a low skill would be able to exploit these vulnerabilities. MITIGATION Moxa has created new firmware to mitigate these vulnerabilities. It recommends that all users upgrade to the latest version. Moxa recommends installing the latest edition of the firmware, which can be downloaded at the following location: ioLogik E1210 V2.5: http://www.moxa.com/support/DownloadFile.aspx?type=support&id=12462 ioLogik E1211 V2.4: http://www.moxa.com/support/DownloadFile.aspx?type=support&id=12469 ioLogik E1212 V2.5: http://www.moxa.com/support/DownloadFile.aspx?type=support&id=12467 ioLogik E1213 V2.6: http://www.moxa.com/support/DownloadFile.aspx?type=support&id=12466 ioLogik E1214 V2.5: http://www.moxa.com/support/DownloadFile.aspx?type=support&id=12464 ioLogik E1240 V2.4: http://www.moxa.com/support/DownloadFile.aspx?type=support&id=12460 ioLogik E1241 V2.5: http://www.moxa.com/support/DownloadFile.aspx?type=support&id=12461 ioLogik E1242 V2.5: http://www.moxa.com/support/DownloadFile.aspx?type=support&id=12458 ioLogik E1260 V2.5: http://www.moxa.com/support/DownloadFile.aspx?type=support&id=12463 ioLogik E1262 V2.5: http://www.moxa.com/support/DownloadFile.aspx?type=support&id=12465 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), https://cwe.mitre.org/data/definitions/79.html, web site last accessed October 13, 2016. b. NVD, https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-8359, 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:R/S..., web site last accessed October 13, 2016. d. CWE-522: Insufficiently Protected Credentials, https://cwe.mitre.org/data/definitions/522.html, web site last accessed October 13, 2016. e. NVD, https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-8372, 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:N/UI:N/S..., web site last accessed October 13, 2016. g. CWE-521: Weak Password Requirements, https://cwe.mitre.org/data/definitions/521.html, web site last accessed October 13, 2016. h. NVD, https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-8379, 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:N/AC:H/PR:N/UI:N/S..., web site last accessed October 13, 2016. j. CWE-352: Cross-Site Request Forgery (CSRF), https://cwe.mitre.org/data/definitions/352.html, web site last accessed October 13, 2016. k. NVD, https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-8350, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. l. 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 October 13, 2016. Contact Information For any questions related to this report, please contact ICS-CERT at: Email: ics-cert@hq.dhs.gov 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. 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