ICS Advisory (ICSA-19-183-02)

Quest KACE Systems Management Appliance

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1. EXECUTIVE SUMMARY

  • CVSS v3 2.7
  • ATTENTION: Exploitable remotely/low skill level to exploit
  • Vendor: Quest
  • Equipment: KACE Systems Management Appliance (SMA)
  • Vulnerability: Improper Input Validation

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an administrative user unintentional access to the underlying operating system of the device.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of KACE Systems Management Appliance are affected:

  • KACE SMA: All versions 8.0.x
  • KACE SMA: All versions 8.1.x
  • KACE SMA: All versions 9.0.x

3.2 VULNERABILITY OVERVIEW

3.2.1    IMPROPER INPUT VALIDATION CWE-20
The vulnerability allows unintentional access to the appliance leveraging functions of the troubleshooting tools located in the administrator user interface.

CVE-2019-10973 has been assigned to this vulnerability. A CVSS v3 base score of 2.7 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Information Technology
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Canada

3.4 RESEARCHER

Juan Pablo Lopez Yacubian reported this vulnerability to NCCIC.

4. MITIGATIONS

Quest recommends affected users upgrade to Version 9.1 or newer, which can be downloaded from the Quest support portal at the following link:

https://support.quest.com/kace-systems-management-appliance/9.1/download-new-releases.

NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:

  • Restrict system access to authorized personnel only and follow a least privilege approach.
  • 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.

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

NCCIC 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:

No known public exploits specifically target this vulnerability.


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?

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