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AUSCERT External Security Bulletin Redistribution
ESB-2018.2224
Multiple vulnerabilities has been identified in WECON LeviStudioU
1 August 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: WECON LeviStudioU
Publisher: ICS-CERT
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-10606 CVE-2018-10602
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-18-212-03
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Advisory (ICSA-18-212-03)
WECON LeviStudioU
Original release date: July 31, 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/.
1. EXECUTIVE SUMMARY
CVSS v3 8.8
ATTENTION: Exploitable remotely/low skill level to exploit
Vendor: WECON Technology Co., Ltd.
Equipment: LeviStudioU
Vulnerabilities: Stack-based Buffer Overflow, Heap-based Buffer Overflow
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to
execute remote code.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
According to Zero Day Initiative (ZDI) the following product and versions are
affected:
LeviStudioU, Versions 1.8.29 and 1.8.44
3.2 VULNERABILITY OVERVIEW
3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121
Multiple stack-based buffer overflow vulnerabilities can be exploited when the
application processes specially crafted project files.
CVE-2018-10602 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).
3.2.2 HEAP-BASED BUFFER OVERFLOW CWE-122
Multiple heap-based buffer overflow vulnerabilities can be exploited when the
application processes specially crafted project files.
CVE-2018-10606 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).
3.3 BACKGROUND
CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Energy, Water and
Wastewater Systems
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: China
3.4 RESEARCHER
NSFOCUS security team and Ghirmay Desta worked with Mat Powell of Trend Micros
Zero Day Initiative to report these vulnerabilities to NCCIC.
4. MITIGATIONS
Updating to the latest version of LeviStudioU may address some of the
vulnerabilities.
NCCIC recommends 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.
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.
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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