ESB-2017.2865 - [Win] Schnedier Electric InduSoft Web Studio and Schneider Electric InTouch Machine Edition : Execute arbitrary code/commands - Remote/unauthenticated 2017-11-10

Printable version
PGP/GPG verifiable version

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

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

                               ESB-2017.2865
         Advisory (ICSA-17-313-02) Schneider Electric InduSoft Web
                    Studio and InTouch Machine Edition
                             10 November 2017

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

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

Product:           Schnedier Electric InduSoft Web Studio
                   Schneider Electric InTouch Machine Edition
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-14024  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-17-313-02

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

Advisory (ICSA-17-313-02)

Schneider Electric InduSoft Web Studio and InTouch Machine Edition

Original release date: November 09, 2017

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/.

CVSS v3 9.8

ATTENTION: Remotely exploitable/low skill level to exploit. Public exploits 
are available.

Vendor: Schneider Electric

Equipment: InduSoft Web Studio, InTouch Machine Edition

Vulnerability: Stack-based Buffer Overflow

AFFECTED PRODUCTS

The following versions of InduSoft Web Studio and InTouch Machine Edition, an
HMI, are affected:

- -InduSoft Web Studio v8.0 SP2 Patch 1 and prior versions, and
- -InTouch Machine Edition v8.0 SP2 Patch 1 and prior versions.

IMPACT

Successful exploitation of this vulnerability could allow a remote 
un-authenticated attacker to remotely execute code with high privileges.

MITIGATION

Schneider Electric recommends:

- -Users using InduSoft Web Studio v8.0 SP2 Patch 1 or prior versions are 
affected and should upgrade and apply InduSoft Web Studio v8.1 as soon as 
possible.

- -Users using InTouch Machine Edition v8.0 SP2 Patch 1 or prior versions are 
affected and should upgrade and apply InTouch Machine Edition 2017 v8.1 as 
soon as possible.

Schneider Electric has also released Security Bulletin LFSEC00000124 that can
be found at:

http://software.schneider-electric.com/pdf/security-bulletin/lfsec00000124/ 
(link is external)

NCCIC/ICS-CERT recommends that 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.

ICS-CERT reminds organizations to perform proper impact analysis and risk 
assessment prior to deploying defensive measures.

ICS-CERT 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 in the ICSCERT Technical Information Paper, 
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation 
Strategies, that is available for download from the ICS-CERT web site.

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

VULNERABILITY OVERVIEW

STACK-BASED BUFFER OVERFLOW CWE-121

The stack-based buffer overflow vulnerability has been identified, which may 
allow remote code execution with high privileges.

CVE-2017-14024 has been assigned to this vulnerability. A CVSS v3 base score 
of 9.8 has been assigned; the CVSS vector string is 
(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

RESEARCHER

Aaron Portnoy, formerly of Exodus Intelligence, reported the vulnerability to
Schneider Electric.

BACKGROUND

Critical Infrastructure Sectors: Commercial Facilities, Critical 
Manufacturing, Energy, Transportation Systems, and Water and Wastewater 
Systems

Countries/Areas Deployed: Worldwide

Company Headquarters Location: France

- --------------------------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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=Dj4d
-----END PGP SIGNATURE-----

« Back to bulletins