ESB-2017.1753 - [Win] GE Communicator: Multiple vulnerabilities 2017-07-14

Printable version
PGP/GPG verifiable version

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

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

                               ESB-2017.1753
                 Advisory (ICSA-17-194-02) GE Communicator
                               14 July 2017

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

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

Product:           GE Communicator
Publisher:         US-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-2017-7908  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-17-194-02

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

Advisory (ICSA-17-194-02)

GE Communicator

Original release date: July 13, 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 7.6

ATTENTION: Remotely exploitable/low skill level to exploit.

Vendor: GE

Equipment: Communicator

Vulnerability: Heap-Based Buffer Overflow

AFFECTED PRODUCTS

The following versions of Communicator, an application for programming and 
monitoring supported metering devices, are affected:

Communicator 3.15 and prior.

IMPACT

Exploitation could allow attackers to execute arbitrary code or create a 
denial-of-service condition.

MITIGATION

GE recommends users update to the latest release, Version 4.0, to mitigate 
this vulnerability. It can be obtained from this location:

https://www.gegridsolutions.com/app/ViewFiles.aspx?prod=epm6000&type=7 (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 ICS-CERT 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.

In addition, ICS-CERT recommends that users take the following measures to 
protect themselves from social engineering attacks:

Do not click web links or open unsolicited attachments in email messages.

Refer to Recognizing and Avoiding Email Scams for more information on avoiding
email scams.

Refer to Avoiding Social Engineering and Phishing Attacks for more information
on social engineering attacks.

No known public exploits specifically target this vulnerability.

VULNERABILITY OVERVIEW

HEAP-BASED BUFFER OVERFLOW CWE-122

A malicious HTML file that loads the ActiveX controls trigger the 
vulnerabilities via unchecked function calls.

CVE-2017-7908 has been assigned to this vulnerability. A CVSS v3 base score of
7.6 has been assigned; the CVSS vector string is 
(AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H).

RESEARCHER

Kimiya, working with iDefense Labs (now part of Accenture Security), 
identified the vulnerability.

BACKGROUND

Critical Infrastructure Sectors: Critical Manufacturing and Energy

Countries/Areas Deployed: Worldwide

Company Headquarters Location: Boston, Massachusetts

Contact Information

For any questions related to this report, please contact ICS-CERT at:

Email: ics-cert@hq.dhs.gov (link sends e-mail)

Toll Free: 1-877-776-7585

International Callers: (208) 526-0900

For industrial control systems security information and incident reporting: 
http://ics-cert.us-cert.gov

ICS-CERT 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:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
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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=6P00
-----END PGP SIGNATURE-----

« Back to bulletins