ESB-2018.1380 - [Appliance] Lantech IDS 2102: Execute arbitrary code/commands - Remote/unauthenticated 2018-05-04

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1380
                Advisory (ICSA-18-123-01) Lantech IDS 2102
                                4 May 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Lantech IDS 2102
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Mitigation
CVE Names:         CVE-2018-8869 CVE-2018-8865 

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-18-123-01

Comment: NCCIC recommends users take defensive measures to minimize the risk of
         exploitation of these vulnerabilities.

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Advisory (ICSA-18-123-01)

Lantech IDS 2102

Original release date: May 03, 2018

Legal Notice

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provided "as is" for informational purposes only. The Department of Homeland
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service, referenced in this product or otherwise. Further dissemination of this
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For more information about TLP, see http://www.us-cert.gov/tlp/.

1. EXECUTIVE SUMMARY

  o CVSS v3 9.8
  o ATTENTION: Exploitable remotely/low skill level to exploit.
  o Vendor: Lantech
  o Equipment: IDS 2102
  o Vulnerabilities: Improper Input Validation, Stack-based Buffer Overflow

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to
execute arbitrary code on the system through crafting malicious input.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of IDS 2102, an Ethernet device server, are affected:

  o IDS 2102 versions 2.0 and prior.

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER INPUT VALIDATION CWE-20

Nearly all input fields allow for arbitrary input on the device.

CVE-2018-8869 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H
/I:H/A:H).

3.2.2 STACK-BASED BUFFER OVERFLOW CWE-121

A stack-based buffer overflow vulnerability has been identified which may allow
remote code execution.

CVE-2018-8865 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H
/I:H/A:H).

3.3 BACKGROUND

  o Critical Infrastructure Sectors: Critical Manufacturing
  o Countries/Areas Deployed: North America, Europe, Australia, and China
  o Company Headquarters Location: Taiwan

3.4 RESEARCHER

Florian Adamsky reported these vulnerabilities to NCCIC.

4. MITIGATIONS

Lantech has been unresponsive to NCCIC.

NCCIC recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. 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.

NCCIC reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.

NCCIC 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
on the ICS-CERT website in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies.

Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to NCCIC for tracking
and correlation against other incidents.

NCCIC also recommends that users take the following measures to protect
themselves from social engineering attacks:

  o Do not click web links or open unsolicited attachments in email messages.
  o Refer to Recognizing and Avoiding Email Scams for more information on
    avoiding email scams.
  o Refer to Avoiding Social Engineering and Phishing Attacks for more
    information on social engineering attacks.

No known public exploits specifically target these vulnerabilities.


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.

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