Operating System:

[Appliance]

Published:

04 December 2015

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2015.3024
        Schneider Electric ProClima ActiveX Control Vulnerabilities
                              4 December 2015

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

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

Product:           Schneider Electric ProClima
Publisher:         US-CERT
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Access Confidential Data        -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-7918  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-15-335-02

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Advisory (ICSA-15-335-02)

Schneider Electric ProClima ActiveX Control Vulnerabilities

Original release date: December 01, 2015

Legal Notice

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"as is" for informational purposes only. The Department of Homeland Security 
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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

Ariele Caltabiano, working with HPs Zero Day Initiative, has identified 11 
remote code execution vulnerabilities in Schneider Electrics ProClima F1 
Bookview ActiveX control application. Schneider Electric has produced an 
update to mitigate these vulnerabilities.

These vulnerabilities could be exploited remotely.

AFFECTED PRODUCTS

Schneider Electric reports that the vulnerabilities affect the following 
versions of ProClima:

	Version 6.1 and prior.

IMPACT

These vulnerabilities can be used to modify arbitrary memory and lead to 
remote code execution.

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.

BACKGROUND

Schneider Electrics corporate headquarters is located in Paris, France, and 
maintains offices in more than 100 countries worldwide.

The affected product, ProClima, is a configuration utility used to design 
control panel enclosures to accommodate the thermal load from the 
electrical/electronic devices inside and from the environment. According to 
Schneider Electric, ProClima is used across several sectors including Critical
Manufacturing, Commercial Facilities, and Energy. Schneider Electric estimates
that this product is used primarily in the United States and Europe with a 
small percentage in Asia.

VULNERABILITY CHARACTERIZATION

VULNERABILITY OVERVIEW

REMOTE CODE EXECUTION [a]

ProClima has 11 vulnerabilities that allow code injection. This could allow 
the attacker to cause a crash or to execute arbitrary code.

CVE-2015-7918 [b] has been assigned to this vulnerability. A CVSS v3 base 
score of 6.3 has been assigned; the CVSS vector string is 
(AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L). [c]

VULNERABILITY DETAILS

EXPLOITABILITY

These vulnerabilities could be exploited remotely.

EXISTENCE OF EXPLOIT

No known public exploits specifically target these vulnerabilities.

DIFFICULTY

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

MITIGATION

Schneider Electric has developed an update for ProClima software. The update 
is available at the following URL:

http://www.schneider-electric.com/en/product-range-download/2560-proclima 
(link is external).

For more information on this vulnerability and the associated patch, please 
see Schneider Electrics SEVD-2015-329-01, released November 25, 2015:

http://www.schneider-electric.com/ww/en/download/document/SEVD-2015-329-01
(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 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-94: Improper Control of Generation of Code (Code Injection), 
http://cwe.mitre.org/data/definitions/94.html, web site last accessed December
01, 2015.

b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-7918, 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 December 01, 2015.

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.

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