Operating System:

[Win]

Published:

03 December 2014

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.2279
                    Elipse SCADA DNP3 Denial of Service
                              3 December 2014

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

Product:           Elipse SCADA
                   Elipse E3
                   Elipse Power systems
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-5429  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-14-303-02

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Advisory (ICSA-14-303-02)

Elipse SCADA DNP3 Denial of Service

Original release date: December 02, 2014

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/.

OVERVIEW

This advisory was originally posted to the US-CERT secure Portal library
on October 30, 2014, and is being released to the NCCIC/ICS-CERT web site

Independent researchers Adam Crain and Chris Sistrunk have identified a DNP3
denial-of-service vulnerability in the Elipse SCADA application. Elipse has
produced a new version of the DNP3 driver that mitigates this vulnerability.

This vulnerability could be exploited remotely.

AFFECTED PRODUCTS

The following Elipse products are affected:

    Elipse SCADA 2.29 build 141 and prior w/ DNP3 driver,
    Elipse E3 versions V1.0 to V4.6,
    Elipse Power systems Versions V1.0 to V4.6, and
    DNP 3.0 Master v3.02 and prior.

IMPACT

An attacker exploiting this vulnerability can cause the process to be
disabled until it is manually restarted.

Impact to individual organizations depends on many factors that are unique
to each organization. ICS-CERT recommends that organizations evaluate
the impact of this vulnerability based on their operational environment,
architecture, and product implementation.

BACKGROUND

Elipse is a Brazil-based company that has business partners in several
countries around the world, including the US, Germany, India, Russia,
Sweden, Argentina, and Chile.

The affected products, Elipse SCADA, are web-based SCADA systems. According
to Elipse, these products are deployed across several sectors including
Critical Manufacturing, Energy, Water and Wastewater Systems, and
others. Elipse estimates that these products are used worldwide.

VULNERABILITY CHARACTERIZATION

VULNERABILITY OVERVIEW

RESOURCE EXHAUSTION[a]

Elipse investigated the notification, identifying a vulnerability in DNP
Master Driver V3.02, which could be reproduced in Elipse SCADA, Elipse E3,
and Elipse Power systems. The attack consists of sending data packets with
formatting errors, causing a process failure.

When the exploit is used against Elipse E3 and Elipse Power systems,
the unavailability is temporary (about 30 seconds), and when used against
Elipse SCADA, the system becomes unavailable until a system restart.

CVE-2014-5429[b] has been assigned to this vulnerability. A CVSS
v2 base score of 5.0 has been assigned; the CVSS vector string is
(AV:N/AC:L/Au:N/C:N/I:N/A:P).[c]

VULNERABILITY DETAILS

EXPLOITABILITY

This vulnerability could be exploited remotely.

EXISTENCE OF EXPLOIT

No known public exploits specifically target this vulnerability.

DIFFICULTY

An attacker with a low skill would be able to exploit this vulnerability.

MITIGATION

Elipse has created a new version of DNP Master Driver (V.4.0.21) that
fixes this problem. Elipse has also made this new version available on
October 27, 2014, on its web site at the following location:

http://www.elipse.com.br/eng/download_drivers.aspx

Asset owners using affected products should contact their local sales
representative or Elipse customer service for more information.

ICS-CERT encourages asset owners to take additional defensive measures to
protect against this and other cybersecurity risks.

    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 also provides a section for control systems
security recommended practices on the ICS-CERT web page at
http://ics-cert.us-cert.gov/content/recommended-practices. Several
recommended practices are available for reading and download, including
Improving Industrial Control Systems Cybersecurity with Defense-in-Depth
Strategies. ICS-CERT reminds organizations to perform proper impact analysis
and risk assessment prior to deploying defensive measures.

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
(www.ics-cert.org).

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.

    a. CWE-400: CWE-400: Uncontrolled Resource Consumption ('Resource
    Exhaustion'),http://cwe.mitre.org/data/definitions/400.html, web site
    last accessed October 30, 2014.
    b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-5429,
    NIST uses this advisory to create the CVE web site report. This web
    site will be active sometime after publication of this advisory.
    c. CVSS Calculator,
    http://nvd.nist.gov/cvss.cfm?version=2&vector=AV:N/AC:L/Au:N/C:N/I:N/A:P,
    web site last accessed October 30, 2014.


Contact Information

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

Email: ics-cert@hq.dhs.gov
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.

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