ESB-2018.0139 - [Appliance] Moxa MXview: Increased privileges - Existing account 2018-01-12
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0139 Advisory (ICSA-18-011-02) Moxa MXview 12 January 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Moxa MXview Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Increased Privileges -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-14030 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-18-011-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-18-011-02) Moxa MXview Original release date: January 11, 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/. CVSS v3 7.8 ATTENTION: Low skill level to exploit. Vendor: Moxa Equipment: MXview Vulnerability: Unquoted Search Path or Element. AFFECTED PRODUCTS The following versions of MXview, network management software, are affected: o MXview v2.8 and prior. IMPACT Successful exploitation of this vulnerability could allow a local authorized user with file access to escalate privileges by inserting arbitrary code into the unquoted service path. MITIGATION Moxa has produced new firmware Version 2.9 for the affected devices that can be downloaded from: https://www.moxa.com/support/sarch_result.aspx?prod_id=622&type_id=6&type=soft NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of this vulnerability. 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. 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. No known public exploits specifically target this vulnerability. This vulnerability is not remotely exploitable. VULNERABILITY OVERVIEW UNQUOTED SEARCH PATH OR ELEMENT CWE-428 The unquoted service path escalation vulnerability could allow an authorized user with file access to escalate privileges by inserting arbitrary code into the unquoted service path. CVE-2017-14030 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H /I:H/A:H). RESEARCHER Karn Ganeshen reported the vulnerability to ICS-CERT. BACKGROUND Critical Infrastructure Sectors: Critical Manufacturing, Energy, Transportation Systems Countries/Areas Deployed: Worldwide Company Headquarters Location: Taiwan Contact Information For any questions related to this report, please contact the NCCIC at: Email: NCCICCUSTOMERSERVICE@hq.dhs.gov Toll Free: 1-888-282-0870 For industrial control systems cybersecurity information: http:// ics-cert.us-cert.gov or incident reporting: https://ics-cert.us-cert.gov/Report-Incident? The NCCIC 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. 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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 iQIVAwUBWlgcxYx+lLeg9Ub1AQiESxAAjHNkcA3ilTJh5niP95aMHwkPbVuGgWQ3 x3MFilPTla5bWpTG7x//BMVYk8Karw7DAzLjocGMt7hyJBpcErH7FPwh5nNltnrg lrN7z/WC+tnY7JP9B1Btmq2UVW5Y5Na8JBVm4teZX8fEQZupJdlWk41F1OrkbOt1 XZemBcrmoShn/5wpQemgwibEuvz+MucZNWM9fTxCtQh3CsJy1cwK1mk2HlaSKkYq U4lYPp7IxihFmLGIEWMBAwjYzOIuYebA4+U9LMvAOuNsfPdd0VzFK6fU5UD94VBz ySSllnxMFEVLEHfrvLn6n1TzZsu/yaySOWpvFCVuA4WWkcFx/6AwxWpjaL3uGXdN mQRJzCbnmXxeAgZN5DnjTa0LCN718vy+ZYaR//IvQF2Aev+8tjmAYnofqGyjWZ4C 64p1jSfP/HP9oWwzpC+Py/su7Kve5xFW1SMj/dqi7+u04Y73osViLwvUN6n5Pb9V vM0sR/95mlp+HQjf+mGkbye3LsYv1NoiRqwdFfuWNBpxu1DPayPPRCSI9BCKl+If sAfUIBp8befHsd7/UMoKa1kSrrUKUP1OVv32HGfqhzZgKQrJGMshKuyvSPMBIwG7 AmH0wYUC0D8iIRmx4viYCt+bx0uNaNKRSPQ35tC5Szhe7mYmKAuQw5Xu4nhg2ABI I4or4TGr1MQ= =B+CA -----END PGP SIGNATURE-----« Back to bulletins