ESB-2018.2224 - [Win] WECON LeviStudioU: Multiple vulnerabilities 2018-08-01

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2224
     Multiple vulnerabilities has been identified in WECON LeviStudioU
                               1 August 2018

===========================================================================

        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

- --------------------------BEGIN INCLUDED TEXT--------------------

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.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=v0EW
-----END PGP SIGNATURE-----

« Back to bulletins