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Advisory (ICSA-16-287-05A)

Moxa ioLogik E1200 Series Vulnerabilities (Update A)

Original release date: October 13, 2016 | Last revised: January 31, 2017

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OVERVIEW

This updated advisory is a follow-up to the original advisory titled ICSA-16-287-05 Moxa ioLogik E1200 Series Vulnerabilities that was published October 13, 2016, on the NCCIC/ICS-CERT web site.

--------- Begin Update A Part 1 of 4 --------

Alexandru Ariciu of Applied Risk has identified vulnerabilities in Moxa’s ioLogik E1200 series and ioLogik E2200 series devices. 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.

--------- End Update A Part 1 of 4 ----------

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,
  • ioLogik E1262, firmware Version V2.4 and prior,

--------- Begin Update A Part 2 of 4 --------

  • ioLogik E2210, firmware versions prior to V3.13,
  • ioLogik E2212, firmware versions prior to V3.14,
  • ioLogik E2214, firmware versions prior to V3.12,
  • ioLogik E2240, firmware versions prior to V3.12,
  • ioLogik E2242, firmware versions prior to V3.12,
  • ioLogik E2260, firmware versions prior to V3.13, and
  • ioLogik E2262, firmware versions prior to V3.12

--------- End Update A Part 2 of 4 ----------

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. 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.

--------- Begin Update A Part 3 of 4 --------

The affected products, ioLogik E1200 series and E2200 series, are 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.

--------- End Update A Part 3 of 4 ----------

VULNERABILITY CHARACTERIZATION

VULNERABILITY OVERVIEW

CROSS-SITE SCRIPTINGa

The web application fails to sanitize user input, which may allow an attacker to inject script or execute arbitrary code.

CVE-2016-8359b 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 CREDENTIALSd

A password is transmitted in a format that is not sufficiently secure.

CVE-2016-8372e 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 REQUIREMENTSg

Users are restricted to using short passwords.

CVE-2016-8379h 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 FORGERYj

The web application may not sufficiently verify whether a request was provided by a valid user.

CVE-2016-8350k 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

--------- Begin Update A Part 4 of 4 --------

  • ioLogik E2210 V3.13

http://www.moxa.com/support/DownloadFile.aspx?type=support&id=13567

  • ioLogik E2212 V3.14

http://www.moxa.com/support/DownloadFile.aspx?type=support&id=13568

  • ioLogik E2214 V3.12

http://www.moxa.com/support/DownloadFile.aspx?type=support&id=13569

  • ioLogik E2240 V3.12

http://www.moxa.com/support/DownloadFile.aspx?type=support&id=13570

  • ioLogik E2242 V3.12

http://www.moxa.com/support/DownloadFile.aspx?type=support&id=13571

  • ioLogik E2260 V3.13

http://www.moxa.com/support/DownloadFile.aspx?type=support&id=13572

  • ioLogik E2262 V3.12

http://www.moxa.com/support/DownloadFile.aspx?type=support&id=13573

--------- End Update A Part 4 of 4 ----------

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.


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

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