Moxa MXview Unquoted Search Path or Element. (CVE-2017-14030)

# ICS Advisory (ICSA-18-011-02) ## Moxa MXview Original release date: January 11, 2018 [Print Document](javascript:window.print\(\);) [Tweet](https://twitter.com/share?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-18-011-02) [Like Me](https://www.facebook.com/sharer.php?u=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-18-011-02) [Share](http://www.addthis.com/bookmark.php?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2FICSA-18-011-02) ### Legal Notice All information products included in [https://us-cert.gov/ics](/ics) 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 [https://www.us- cert.gov/tlp/](/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: * 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](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: * 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](/ics/content/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.](/sites/default/files/recommended_practices/NCCIC_ICS- CERT_Defense_in_Depth_2016_S508C.pdf) 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](/ics/tips/ICS- TIP-12-146-01B), that is available for download from the [ICS-CERT web site](/ics/). 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](https://cwe.mitre.org/data/definitions/428.html) 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](http://web.nvd.nist.gov/view/vuln/detail?vulnId=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](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/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