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ESB-2016.0364 - [Virtual][SUSE] Tollgrade SmartGrid LightHouse Sensor Management System: Multiple vulnerabilities

Date: 15 February 2016

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

                               ESB-2016.0364
   Tollgrade SmartGrid Sensor Management System Software Vulnerabilities
                             15 February 2016

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

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

Product:           Tollgrade SmartGrid LightHouse Sensor Management System
Publisher:         US-CERT
Operating System:  SUSE
                   VMware ESX Server
Impact/Access:     Access Privileged Data     -- Remote/Unauthenticated      
                   Cross-site Request Forgery -- Remote with User Interaction
                   Cross-site Scripting       -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-0866 CVE-2016-0865 CVE-2016-0864
                   CVE-2016-0863  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-16-040-01

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

Advisory (ICSA-16-040-01 )

Tollgrade SmartGrid Sensor Management System Software Vulnerabilities

Original release date: February 09, 2016

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/.

OVERVIEW

Independent researcher Maxim Rupp has identified vulnerabilities in Tollgrade
Communications, Inc.s SmartGrid LightHouse Sensor Management System (SMS) 
Software EMS. Tollgrade Communications, Inc. has produced an update to 
mitigate these vulnerabilities. Maxim Rupp has tested the update to validate 
that it resolves the vulnerabilities.

These vulnerabilities could be exploited remotely.

AFFECTED PRODUCTS

The following LightHouse SMS Software versions are affected:

  Version 4.1.0 Build 16, and

  Versions older than Version 5.1

IMPACT

Four vulnerabilities were uncovered by the researcher:

1. Cross-site Scripting,

2. Disclosure of Information,

3. Cross-site Request Forgery (CSRF), and

4. Insecure Credentials.

Cross-site Scripting presents one entry point for attackers to access and 
manipulate control systems networks. It takes advantage of web servers that 
return dynamically generated web pages. Cross-site scripting also allows users
to post viewable content in order to execute arbitrary HTML and active 
content, such as JavaScript, ActiveX, and VBScript, on a remote machine 
browsing the site within the context of a client-server session. This 
potentially allows the attacker to redirect the web page to a malicious 
location, hijack the client-server session, engage in network reconnaissance,
and plant backdoor programs. Please refer to the NCCIC/ICS-CERT Abstract on 
Cross-Site Scripting for more information and additional mitigations.

A CSRF attack may allow the web browser to perform an unwanted action on a 
trusted site for which the user is currently authenticated. The SMS Software 
web server application does not use CSRF tokens anywhere and, therefore, 
allows any application function to be silently executed. This includes the 
ability to create new users or change passwords.

The SMS Software discloses to unauthenticated users access to sensitive files
like reports and usernames (in the files).

An authenticated user with limited privileges can change the password of 
another user, and thus obtain access to his or her account.

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

BACKGROUND

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 Communications, Inc.
estimates that this product is used primarily in North America, Europe, and 
South America.

VULNERABILITY CHARACTERIZATION

VULNERABILITY OVERVIEW

CROSS-SITE REQUEST FORGERY (CSRF)[a]

The affected versions of the LightHouse SMS Software are missing protections 
from CSRF, allowing a malicious party to execute commands on an authenticated
active connection without the user being aware.

CVE-2016-0863[b] has been assigned to this vulnerability. A CVSS v3 base score 
of 8.8 and a temporal score of 7.9 have been assigned; the CVSS vector string
is (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C).[c]

DISCLOSURE OF INFORMATION[d]

Unauthenticated parties may access the devices with affected software and 
obtain sensitive information including reports and usernames.

CVE-2016-0864[e] has been assigned to this vulnerability. A CVSS v3 base score 
of 5.3 and a temporal score of 4.8 have been assigned; the CVSS vector string
is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C).[f]

INSECURE CREDENTIALS[g]

An authenticated user with limited privileges can change the password of 
another user on affected software, and thus obtain access to his or her 
account.

CVE-2016-0865[h] has been assigned to this vulnerability. A CVSS v3 base score 
of 8.8 and a temporal score of 7.9 have been assigned; the CVSS vector string
is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C).[i]

CROSS-SITE SCRIPTING[j]

The affected software allows for manipulation of the dynamic URLs used by the
web server, allowing a malicious party to control the web server to redirect 
web page to a malicious location, hijack the client-server session, engage in
network reconnaissance, and/or plant backdoor programs.

CVE-2016-0866[k] has been assigned to this vulnerability. A CVSS v3 base score 
of 6.1 and a temporal score of 5.5 have been assigned; the CVSS vector string
is (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C).[l]

VULNERABILITY DETAILS

EXPLOITABILITY

These vulnerabilities could be exploited remotely.

EXISTENCE OF EXPLOIT

No known public exploits specifically target these vulnerabilities.

DIFFICULTY

Crafting a working exploit for these vulnerabilities would be moderately 
difficult. Social engineering is required to convince the user to click on or
open their browser to a malicious URL.

MITIGATION

Tollgrade Communications, Inc. released the updated software 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 their 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 the vulnerabilities listed
in this advisory and potentially similar vulnerabilities that have not been 
uncovered. In addition, users of the control system software should be trained
to recognize potential social engineering threats and avoid clicking on links
or using a browser or email connection while connected to the SCADA control 
software.

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 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 
(http://ics-cert.us-cert.gov/).

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[m] for more information on 
avoiding email scams.

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

a. CWE-352: Cross-Site Request Forgery (CSRF), 
http://cwe.mitre.org/data/definitions/352.html, web site last accessed 
February 9, 2016.

b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-0863, 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, 
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S..., 
web site last accessed February 9, 2016.

d. CWE-200: Information Exposure, 
http://cwe.mitre.org/data/definitions/200.html, web site last accessed 
February 9, 2016.

e. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-0864, 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, 
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S... ,
web site last accessed February 9, 2016.

g. CWE-522: Insufficiently Protected Credentials, 
http://cwe.mitre.org/data/definitions/522.html, web site last accessed 
February 9, 2016.

h. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-0865, 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, 
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S..., 
web site last accessed February 9, 2016.

j. CWE-79: Improper Neutralization of Input During Web Page Generation 
(Cross-site Scripting), http://cwe.mitre.org/data/definitions/79.html, web 
site last accessed February 9, 2016.

k. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-0866, NIST 
uses this advisory to create the CVE web site report. This web site will be 
active sometime after publication of this advisory.

l. CVSS Calculator, 
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S..., 
web site last accessed February 9, 2016.

m. Recognizing and Avoiding Email Scams, 
http://www.us-cert.gov/reading_room/emailscams_0905.pdf, web site last 
accessed February 9, 2016.

n. National Cyber Alert System Cyber Security Tip ST04-014, 
http://www.us-cert.gov/cas/tips/ST04-014.html, web site last accessed February
9, 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: 
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--------------------

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
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