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             AUSCERT External Security Bulletin Redistribution

                Meinberg Radio Clocks LANTIME M-Series XSS
                              4 November 2014


        AusCERT Security Bulletin Summary

Product:           Meinberg Radio Clocks LANTIME M-Series
Publisher:         US-CERT
Operating System:  Network Appliance
Impact/Access:     Cross-site Scripting -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-5417  

Original Bulletin: 

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Advisory (ICSA-14-275-01)

Meinberg Radio Clocks LANTIME M-Series XSS

Original release date: October 30, 2014 | Last revised: October 31, 2014

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/.


This advisory was originally posted to the US-CERT secure Portal library on 
October 2, 2014, and is being released to the ICS-CERT web site.

Martem Telecontrol Systems security researcher Aivar Liimets has identified a
reflected crosssite scripting vulnerability in the Meinberg Radio Clocks GmbH
& Co. KG LANTIME M400 web interface. Meinberg has produced a firmware update 
that mitigates this vulnerability in all LANTIME M-Series. Aivar Liimets has 
tested the firmware update to validate that it resolves the vulnerability.

This vulnerability could be exploited remotely.


The following Meinberg Network Time Protocol (NTP) Server firmware versions 
are affected:

    LANTIME M-Series models: V6.15.019 and prior.


The reflected cross-site scripting vulnerability could cause the time server 
to provide misinformation to devices.

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.


Meinberg Radio Clocks GmbH & Co. KG is an international provider of electronic
modules, based in Bad Pyrmont, Germany.

The affected products, the LANTIME M-Series, are NTP Servers. According to 
Meinberg, the Meinberg NTP Servers are deployed across several sectors 
including Commercial Facilities, Communications, Energy, Financial Services, 
and Transportation Systems. Meinberg estimates that these products are used 
primarily in the United States and Europe.



CROSS-SITE SCRIPTINGCWE-79: Improper Neutralization of Input During Web Page 
Generation (Cross-site Scripting), 
http://cwe.mitre.org/data/definitions/79.html, web site last accessed October
30, 2014.

The web interface for LANTIME M-Series contains a flaw that allows a reflected
cross-site scripting vulnerability.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-5417, NIST uses this
advisory to create the CVE web site report. has been assigned to this 
vulnerability. A CVSS v2 base score of 7.5 has been assigned; the CVSS vector
string is (AV:N/AC:L/Au:N/C:P/I:P/A:P).CVSS Calculator, 
http://nvd.nist.gov/cvss.cfm?version=2&vector=AV:N/AC:L/Au:N/C:P/I:P/A:P, web
site last accessed October 30, 2014.



This vulnerability could be exploited remotely.


No known public exploits specifically target this vulnerability.


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


Meinbergs firmware update, Version 6.15.020, resolves this vulnerability.

Please contact Meinberg customer service for information on how to download 
and install the firmware update, or obtain the update at the following online


Meinberg Radio Clocks
Lange Wand 9
D-31812 Bad Pyrmont
Phone: ++49(0)5281-9309 0
Fax: ++49(0)5281-9309 30
Email: info@meinberg.de

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-12-146-01BTargeted 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:

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

2. Refer to Recognizing and Avoiding Email ScamsRecognizing and Avoiding Email
Scams, http://www.us-cert.gov/reading_room/emailscams_0905.pdf, web site last
accessed October 30, 2014. for more information on avoiding email scams.

3. Refer to Avoiding Social Engineering and Phishing AttacksNational Cyber 
Alert System Cyber Security Tip ST04-014, 
http://www.us-cert.gov/cas/tips/ST04-014.html, web site last accessed October
30, 2014. for more information on social engineering attacks.

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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