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             AUSCERT External Security Bulletin Redistribution

            Tollgrade Smart Grid EMS LightHouse Vulnerabilities
                               14 July 2016


        AusCERT Security Bulletin Summary

Product:           Tollgrade Smart Grid EMS LightHouse Sensor Management System
Publisher:         ICS-CERT
Operating System:  VMware ESX Server
Impact/Access:     Denial of Service   -- Remote/Unauthenticated
                   Reduced Security    -- Remote/Unauthenticated
                   Unauthorised Access -- Existing Account      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-5807 CVE-2016-5797 CVE-2016-5790

Original Bulletin: 

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Advisory (ICSA-16-194-01)

Tollgrade Smart Grid EMS LightHouse Vulnerabilities

Original release date: July 12, 2016

Legal Notice

All information products included in http://ics-cert.us-cert.gov are provided
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(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/.


Ashish Kamble of Qualys, Inc. has identified vulnerabilities in Tollgrade 
Communications, Inc.s Smart Grid LightHouse Sensor Management System (SMS) 
Software EMS. Tollgrade has produced a new version to mitigate these 
vulnerabilities. Ashish Kamble has tested the new version to validate that it
resolves these vulnerabilities.

These vulnerabilities could be exploited remotely.


Tollgrade Communications, Inc. reports that the vulnerabilities affect the 
following versions of LightHouse SMS Software:

    LightHouse SMS, versions prior to Version 5.1, Patch 3


An attacker who exploits these vulnerabilities may be able to restart the 
system, brute force a login, or change privileged parameters.

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


Tollgrade Communications, Inc. is a United States-based company that maintains
offices in the United Kingdom and Germany.

The affected product, LightHouse SMS Software, is a web-based distribution 
monitoring system. According to Tollgrade Communications Inc., LightHouse SMS
Software is deployed across the Energy sector. Tollgrade estimates that this 
product is used primarily in North America, Europe, and South America.




An attacker can restart the LightHouse SMS Software without authentication.

CVE-2016-5790 [b] has been assigned to this vulnerability. A CVSS v3 base score 
of 7.5 has been calculated; the CVSS vector string is 
(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). [c]


The content of error messages facilitates a brute force authentication attack.

CVE-2016-5797 [e] has been assigned to this vulnerability. A CVSS v3 base score 
of 5.3 has been calculated; the CVSS vector string is 
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N). [f]


A low privileged user can access and modify parameters that only an 
administrator should be able to access.

CVE-2016-5807 [h] has been assigned to this vulnerability. A CVSS v3 base score 
of 8.1 has been calculated; the CVSS vector string is 
(AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N). [i]



These vulnerabilities could be exploited remotely.


No known public exploits specifically target these vulnerabilities.


An attacker with a low skill would be able to exploit these vulnerabilities.


Tollgrade Communications Inc. released updated software, Version 5.1, Patch 3,
which resolves these vulnerabilities. Users should contact Tollgrade 
Communications Inc. for support at the numbers below.

Tollgrade Communications, Inc.

Toll Free: 1 800-777-5405

Phone: 1 724-720-1480

Updated software may be found on its support site at:

http://customersupport.tollgrade.com (link is external)

ICS-CERT recommends that asset owners follow the vendors recommendations on 
patching the impacted products. Internet accessible control system devices 
should be isolated and located within protected areas of the asset owners 
control system network to prevent exploitation from these vulnerabilities.

ICS-CERT recommends that users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. 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 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.

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-306: Missing Authentication for Critical Function, 
http://cwe.mitre.org/data/definitions/306.html, web site last accessed July 
12, 2016.

b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-5790, 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 July 12, 2016.

d. CWE-209: Information Exposure Through an Error Message, 
http://cwe.mitre.org/data/definitions/209.html, web site last accessed July 
12, 2016.

e. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-5797, NIST 
uses this advisory to create the CVE web site report. This web site will be 
active sometime after publication of this advisory.

f. CVSS Calculator, 
web site last accessed July 12, 2016.

g. CWE-425: Direct Request ('Forced Browsing'), 
http://cwe.mitre.org/data/definitions/425.html, web site last accessed July 
12, 2016.

h. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-5807, NIST 
uses this advisory to create the CVE web site report. This web site will be 
active sometime after publication of this advisory.

i. CVSS Calculator, 
web site last accessed July 12, 2016.

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: 

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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