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ESB-2016.0809 - [Win] Cogent DataHub: Increased privileges - Existing account

Date: 30 March 2016

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

                               ESB-2016.0809
            Cogent DataHub Elevation of Privilege Vulnerability
                               30 March 2016

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

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

Product:           Cogent DataHub
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-2288  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-16-084-01

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

Advisory (ICSA-16-084-01)

Cogent DataHub Elevation of Privilege Vulnerability

Original release date: March 24, 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

Steven Seeley of Source Incite has identified a privilege elevation 
vulnerability in the Cogent DataHub application produced by Cogent Real-Time 
Systems, Inc. Cogent has produced a new version to mitigate this 
vulnerability. Steven Seeley has tested the new version to validate that it 
resolves the vulnerability.

AFFECTED PRODUCTS

Cogent reports that the vulnerability affects the following products:

    Cogent DataHub version 7.3.9 and prior.

IMPACT

Attackers could exploit this vulnerability to elevate their privileges from 
guest or user to system.

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.

BACKGROUND

Cogent is a Canadian-based company that produces middleware applications that
are used to interface with control systems.

The Cogent DataHub product is a real-time middleware solution and is deployed
across several sectors including Chemical, Commercial Facilities, Critical 
Manufacturing, Energy, Financial Services, and others. This product is used 
worldwide, but primarily in the United States and Great Britain.

VULNERABILITY CHARACTERIZATION

VULNERABILITY OVERVIEW

IMPROPER PRIVILEGE MANAGEMENT [a]

Users or guests may escalate their privileges by changing an accessible file 
on the system.

CVE2016-2288 [b] has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been calculated; the CVSS vector string is 
(AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). [c]

VULNERABILITY DETAILS

EXPLOITABILITY

This vulnerability is not exploitable remotely and cannot be exploited without
user interaction. The exploit is only triggered when a local user runs the 
vulnerable application and loads the malformed file.

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

Cogent has fixed this vulnerability in Version 7.3.10 of DataHub. This is a 
free upgrade for any user running V7.x. Cogent advises that users upgrade to 
Cogent DataHub Version 7.3.10 from:

http://www.cogentdatahub.com/Download_Software.html (link is external)

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 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 [d] for more information on 
avoiding email scams.

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

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 
(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.

a. CWE-269: Improper Privilege Management, 
http://cwe.mitre.org/data/definitions/269.html, web site last accessed March 
24, 2016.

b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-2288, 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:H/PR:L/UI:N/S..., 
web site last accessed March 24, 2016.

d. Recognizing and Avoiding Email Scams, 
http://www.us-cert.gov/reading_room/emailscams_0905.pdf, web site last 
accessed March 24, 2016.

e. National Cyber Alert System Cyber Security Tip ST04-014, 
http://www.us-cert.gov/cas/tips/ST04-014.html, web site last accessed March 
24, 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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NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

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

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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