ESB-2018.1039 - [Win] LAquis SCADA: Denial of service - Existing account 2018-04-06

Printable version
PGP/GPG verifiable version

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

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

                               ESB-2018.1039
LCDS – Leao Consultoria e Desenvolvimento de Sistemas Ltda ME LAquis SCADA
                               6 April 2018

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

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

Product:           LAquis SCADA
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Denial of Service               -- Existing Account
                   Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-5463  

Original Bulletin: 
   ttps://ics-cert.us-cert.gov/advisories/ICSA-18-095-03

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

Advisory (ICSA-18-095-03)

LCDS Leao Consultoria e Desenvolvimento de Sistemas Ltda ME LAquis SCADA

Original release date: April 05, 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 7.0
    Vendor: LCDS - Leao Consultoria e Desenvolvimento de Sistemas LTDA ME
    Equipment: LAquis SCADA
    Vulnerability: Improper Check or Handling of Exceptional Conditions

2. RISK EVALUATION

Successful exploitation of this vulnerability could cause the device an 
attacker is accessing to crash, resulting in a structured exception handler 
overflow condition, which may allow code execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of LAquis SCADA, an industrial automation software, are
affected:

    LAquis SCADA software versions 4.1.0.3391 and prior.

3.2 VULNERABILITY

3.2.1 IMPROPER CHECK OR HANDLING OF EXCEPTIONAL CONDITIONS CWE-703

A structured exception handler overflow vulnerability has been identified that
may allow code execution.

CVE-2018-5463 has been assigned to this vulnerability. A CVSS v3 base score of
7.0 has been calculated; the CVSS vector string is 
(AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.3 BACKGROUND

    Critical Infrastructure Sectors: Chemical, Commercial Facilities, Energy,
Food and Agriculture, Transportation Systems, Water and Wastewater Systems

    Countries/Areas Deployed: South America
    Company Headquarters Location: Joinville-SC, Brazil

3.4 RESEARCHER

Karn Ganeshen reported the vulnerability to NCCIC.

4. MITIGATIONS

LCDS recommends that users update to version 4.1.0.3774, which can be found at
the following location:

http://laquisscada.com/instale1.php (link is external)

NCCIC recommends that users take defensive measures to minimize the risk of 
exploitation of this vulnerability. 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.

- --------------------------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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=XrQq
-----END PGP SIGNATURE-----

« Back to bulletins