Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.0438 AMX Multiple Products Credential Management Vulnerabilities 22 February 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: AMX Products Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2016-1984 CVE-2015-8362 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-16-049-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-16-049-02 ) AMX Multiple Products Credential Management Vulnerabilities Original release date: February 18, 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 NCCIC/ICS-CERT has become aware of public reporting of credential management vulnerabilities in multiple Harman AMX multimedia devices. AMX has confirmed the existence of hard-coded passwords in multiple products. AMX has produced patches and new product versions to mitigate one of the vulnerabilities in the affected products. AMX is working to release new product versions to mitigate the remaining credential management vulnerability in their affected products. These vulnerabilities could be exploited remotely. Exploits that target these vulnerabilities are known to be publicly available. AFFECTED PRODUCTS The following AMX multimedia devices are affected by vulnerability CVE-2015-8362: NX-1200, NX-2200, NX-3200, NX-4200 NetLinx Controller, versions prior to Version 1.4.65, Massio ControlPads MCP-10x, versions prior to Version 1.4.65, Enova DVX-x2xx, versions prior to Version 1.4.65, DVX-31xxHD-SP (-T), versions prior Version 4.8.331, DVX-21xxHD-SP (-T), versions prior Version 4.8.331, DVX-2100HD-SP-T Master, versions prior to Version 4.1.420 (Hotfix firmware version), Enova DGX 100 NX Series Master, versions prior to Version 1.4.72 (Hotfix firmware version), Enova DGX 8/16/32/64 NX Series Master, versions prior to Version 1.4.72 (Hotfix firmware version), Enova DGX 8/16/32/64 NI Series Master, versions prior to Version 4.2.397 (Hotfix firmware version), NI-700, NI-900 Master Controllers (64M RAM), versions prior to Version 4.1.419, NI-700, NI-900 Master Controllers (32M RAM), versions prior to Version 3.60.456 (Hotfix firmware version), NI-2100, NI-3100, NI-4100, NI-2100 with ICSNet, NI-3100 with ICSNet, NI-3100/256, NI-3100/256 with ICSNet, NI-4100/256, versions prior to Version 4.1.419, NI-3101-SIG Master Controller, versions prior to Version 4.1.419, NI-2000, NI-3000, NI-4000, versions prior to Version 3.60.456 (Hotfix firmware version), and ME260/64 Duet, versions prior to Version 3.60.456 (Hotfix firmware version). The following AMX multimedia devices are affected by vulnerability CVE-2016-1984: NX-1200, NX-2200, NX-3200, NX-4200 NetLinx Controller, Version 1.4.65 and Version 1.4.66 (Hotfix firmware version), Massio ControlPads MCP-10x, Version 1.4.65 and Version 1.4.66 (Hotfix firmware version), Enova DVX-x2xx, Version 1.4.65 and Version 1.4.72 (Hotfix firmware version), Enova DGX 100 NX Series Master, Version 1.4.72 (Hotfix firmware version), and Enova DGX 8/16/32/64 NX Series Master, Version 1.4.72 (Hotfix firmware version). IMPACT Successful exploitation of these vulnerabilities may allow an attacker to remotely gain access to the affected systems with elevated privileges to configure user interfaces, change device settings, upload files, and download files. Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. BACKGROUND AMX is part of the Harman Professional Division, which provides audio and video solutions for IT environments. AMX is a US-based company that is headquartered in Dallas, Texas. The affected products are used for audio and video automation in conference rooms and classrooms. According to AMX, these products are deployed across the Commercial Facilities and Government Facilities sectors. AMX estimates that these products are used worldwide. VULNERABILITY CHARACTERIZATION VULNERABILITY OVERVIEW CREDENTIALS MANAGEMENT[a] Affected devices contain a hard-coded password for a diagnostic account with elevated privileges that can be used to configure user settings, device settings, upload files, and download files. CVE-2015-8362[b] has been assigned to this vulnerability. A CVSS v3 base score of 9.9 has been assigned by AMX; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H).[c] CREDENTIALS MANAGEMENT[d] Affected devices contain a hard-coded password for an account that has privileges to exchange Internet Control System Protocol (ICSP) messages, which are accessed via Port 1319/TCP and UDP. AMX reports that this hard-coded password affects firmware Version 1.4.x. CVE-2016-1984[e] has been assigned to this vulnerability. A CVSS v3 base score of 5.8 has been assigned by AMX; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N).[f] VULNERABILITY DETAILS EXPLOITABILITY These vulnerabilities could be exploited remotely. EXISTENCE OF EXPLOIT Exploits that target these vulnerabilities are known to be publicly available. DIFFICULTY An attacker with a low skill would be able to exploit these vulnerabilities. MITIGATION AMX has reported the release of standard firmware versions and Hotfix firmware versions, which mitigates vulnerability, CVE-2015-8362, in the affected products. AMX's standard firmware releases for affected products are available for download at the following URL, with a valid account: http://www.amx.com/techcenter/. AMXService@harman.com. AMX has indicated that older devices may require interim firmware updates if the currently installed firmware is older than the versions listed in the dependencies columns. For more information read the Product Release Notes or contact AMX Tech Support. The credential management vulnerability, CVE-2016-1984, affects firmware, Version 1.4.65 through Version 1.4.72. AMX is planning to address this vulnerability in a later version, which is scheduled for release in April 2016. AMX recommends that users consider applying the following interim mitigations until product updates are available: Most NX series devices have a secondary port (ICSLAN) intended for the connection of AMX client devices. ICSP must remain enabled on any network, which the Central Controller connects to AMX Client devices in order for the system to operate as a functional control system. AMX recommends that users consider applying the following interim mitigations: If no ICSP devices are connected to the NX series devices, via the LAN (external) interface, disable ICSP control protocol on the external interface from the basic administrative interface. Isolate vulnerable systems from the Internet and untrusted systems. 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 at: http://ics-cert.us-cert.gov/content/recommended-practices. 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 (http://ics-cert.us-cert.gov/). 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-255: Credentials Management, http://cwe.mitre.org/data/definitions/255.html, web site last accessed February 18, 2016. b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-8362, This web site was last accessed February 18, 2016. 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 February 18, 2016. d. CWE-255: Credentials Management, http://cwe.mitre.org/data/definitions/255.html, web site last accessed February 18, 2016. e. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-1984, This web site was last accessed February 18, 2016. f. 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 February 18, 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. 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 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: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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 iQIVAwUBVsqkQn6ZAP0PgtI9AQIe1A/9GrTUGCs9iYZwJPMWlJH1uHIaR9khphQC 0Xj2lWn5kfSGF4Wr3c7V9jDZhHGIhgfE7e1FfxCMygcWnBOdDfx7nTiK+v1rNmln +aHByRP8y1DOM9W9zby4Uwq7O6fo1L654kjIO39PS20d4Wb8y/dFfRuGCLpLizSf j+YDzHAgSQKohnM06PgUZ64PHLbF5t6QaTfACZhVTszS3YfKuNEy+gGBOgSqgFO+ GI/D9DApKM08OiW3MlijGKq8ctl4QpRYo+0d+ZjmntAJhh3S1u3dO2XXipUQVErU jdtJSIxoPDIVThk5PxzT+vIY9V0xG7cM4HNZ6oO5IeUg5vg6Ktc2d87GyshiyACt z3TJNwFipUkoURFHwFkpeAcz9AKvGZwiXMDGILeurj6nx3RT4o1dn6k6/ahNGk2U hlXagKA/yR2SXsv2oAp9gX4TB1BPR74q9yUV9icxgcBxf36FKPbIKf9AkwAHI/Lh UeTIVarCmXBAtWGXereUSj7yadDH6b7XFaCd+XvxRI0iEUWbM+QawlU/B+0ni/DE g6vZEXJ1Cfhrv5SDs4abggDnDlSAGq4kDlYSihaKeOBWjWNmPqqn9NvQsHQi6vCu 0DUFYPWXVa5oyrZI7W+LTuVgFHTJN7SshjhBnznOKxdLCwRqi65ZQSd/Isj5z+C1 bdrdzHqWPDk= =n6Gq -----END PGP SIGNATURE-----