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             AUSCERT External Security Bulletin Redistribution

                 Yokogawa CENTUM and Exaopc Vulnerability
                             25 September 2014


        AusCERT Security Bulletin Summary

Product:           Yokogawa CENTUM
                   Yokogawa Exaopc
Publisher:         US-CERT
Operating System:  Windows
Impact/Access:     Create Arbitrary Files   -- Remote/Unauthenticated
                   Access Confidential Data -- Remote/Unauthenticated
Resolution:        Mitigation
CVE Names:         CVE-2014-5208 CVE-2014-0784 

Original Bulletin: 

Comment: Exploits that target this vulnerability are publicly available.
         While not patches are currently available, Yokogawa will provide 
         patch software for the latest revisions of the affected products at
         the end of September 2014. In the meantime, administrators should
         restrict network access to the device as detailed within this 
         advisory to mitigate the risk associated with this vulnerability.

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Advisory (ICSA-14-260-01)

Yokogawa CENTUM and Exaopc Vulnerability

Original release date: September 17, 2014

Legal Notice

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more information about TLP, see http://www.us-cert.gov/tlp/.


Tod Beardsley of Rapid7 Inc., and Jim Denaro of CipherLaw, have identified an
authentication vulnerability and released proof-of-concept (exploit) code for
the Yokogawa CENTUM CS 3000 series and Exaopc products. JPCERT and Yokogawa 
have mitigated this vulnerability.

This vulnerability could be exploited remotely. Exploits that target this 
vulnerability are known to be publicly available.


The following Yokogawa CENTUM 3000 versions are affected:

    CENTUM series with the Batch Management Packages installed

    CENTUM CS 3000 (R3.09.50 or earlier)

    CENTUM CS 3000 Small (R3.09.50 or earlier)

    CENTUM VP (R4.03.00 or earlier, R5.04.00 or earlier)

    CENTUM VP Small (R4.03.00 or earlier, R5.04.00 or earlier)

    CENTUM VP Basic (R4.03.00 or earlier, R5.04.00 or earlier).

The following Yokogawa Exaopc version is affected:

Exaopc (R3.72.10 or earlier).


Successful exploitation of this vulnerability could allow an attacker to allow
arbitrary files to be read and written.

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


Yokogawa is a company based in Japan that maintains offices in several 
countries around the world, including North and Central America, South 
America, Europe, the Middle East, Africa, South Asia, and East Asia.

The affected products, CENTUM CS 3000, are Windows-based control systems. 
According to Yokogawa, these products are deployed across several sectors, 
including Critical Manufacturing, Energy, Food and Agriculture, and others. 
Yokogawa estimates that there are 7,600 systems worldwide.




CENTUMs BKBCopyD.exe service is started if the Batch Management Packages are 
installed and listens by default on Port 20111/TCP. There is a no 
authentication, which makes it possible to abuse several operations provided 
by the service in order to:

    Leak the CENTUM project database location

    Read arbitrary files

    Write arbitrary files.

This vulnerability is different than CVE-2014-0784, which was reported earlier
in March 2014.

CVE-2014-5208 [b] has been assigned to this vulnerability. Yokogawa has scored
this vulnerability with a CVSS v2 base score of 6.8; the CVSS v2 vector string
is AV:N/AC:M/Au:N/C:P/I:P/A:P. [c]



This vulnerability could be exploited remotely.


Exploits that target this vulnerability are publicly available.


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


Yokogawa will provide patch software for the latest revisions of the affected
products at the end of September 2014. Please contact Yokogawa technical 
support and services for the details on the release date and installation 

Yokogawa also suggests all customers introduce appropriate security measures 
to the overall system, not just for the vulnerability identified.

For more information, please see Yokogawa Security Advisory Report 
YSAR-14-0003E, published on September 17, 2014. This report is available at:


Yokogawa also recommends the following firewall mitigation measures:

Block external data communications from outside of the control system 
network on Port 20111/TCP

Allow internal traffic on Port 20111/TCP only for the CENTUM systems 
installed with Batch Management Packages

Block the traffic on Port 20111/TCP to Exaopc installations.

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 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.

    a. CWE-287: Improper Authentication, 
http://cwe.mitre.org/data/definitions/287.html, web site last accessed 
September 17, 2014.

    b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-5208, 
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, 
web site last accessed September 17, 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: 

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 

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