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AUSCERT External Security Bulletin Redistribution
ESB-2011.1266
Schneider Electric Quantum Ethernet Module
19 December 2011
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AusCERT Security Bulletin Summary
---------------------------------
Product: Schneider Electric Quantum Ethernet Module
Publisher: US-CERT
Operating System: Network Appliance
Impact/Access: Administrator Compromise -- Remote/Unauthenticated
Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Modify Arbitrary Files -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Website Defacement -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2011-4859
Original Bulletin:
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-346-01.pdf
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ICS-ALERT-11-346-01
Schneider Electric Quantum Ethernet Module Multiple Vulnerabilities
December 12, 2011
ALERT
SUMMARY
On December 12, 2011, independent security researcher Rubn Santamarta publicly
announced details of multiple vulnerabilities affecting the Schneider Electric
Quantum Ethernet Module. Prior to publication, Mr. Santamarta notified ICS-CERT
of the vulnerabilities. ICS-CERT is coordinating mitigations with Mr.
Santamarta and Schneider Electric. Schneider has produced a fix for two of the
reported vulnerabilities and is continuing to develop additional mitigations.
Multiple hardcoded credentials are revealed in Mr. Santamartas report that
enable access to the following services:
* Telnet port - May allow remote attackers the ability to view the operation of
the modules firmware, cause a denial of service, modify the memory of the
module, and execute arbitrary code.
* Windriver Debug port - Used for development; may allow remote attackers to
view the operation of the modules firmware, cause a denial of service, modify
the memory of the module, and execute arbitrary code.
* FTP service - May allow an attacker to modify the module website, download and
run custom firmware, and modify the http passwords.
ICS-CERT is currently coordinating with Schneider Electric to develop
mitigations. Additional information regarding the impact and mitigations will
be issued as it becomes available. Please report any issues affecting control
systems in critical infrastructure environments to ICS-CERT.
AFFECTED PRODUCTS
Quantum
140NOE77101 Firmware Version 4.9 and all previous versions.
140NOE77111 Firmware Version 5.0 and all previous versions.
140NOE77100 Firmware Version V3.4 and all previous versions.
140NOE77110 Firmware Version V3.3 and all previous versions.
140CPU65150 Firmware Version V3.5 and all previous versions.
140CPU65160 Firmware Version V3.5 and all previous versions.
140CPU65260 Firmware Version V3.5 and all previous versions.
Premium
TSXETY4103 Firmware Version V5.0 and all previous versions.
TSXETY5103 Firmware Version V5.0 and all previous versions.
TSXP571634M Firmware Version V4.9 and all previous versions.
TSXP572634M Firmware Version V4.9 and all previous versions.
TSXP573634M Firmware Version V4.9 and all previous versions.
TSXP574634M Firmware Version V3.5 and all previous versions.
TSXP575634M Firmware Version V3.5 and all previous versions.
TSXP576634M Firmware Version V3.5 and all previous versions.
M340
BMXNOE0100 Firmware Version V2.3 and all previous versions.
BMXNOE0110 Firmware Version V4.65 and all previous versions.
BMXP342020 Firmware Version V2.2 and all previous versions. a
BMXP342030 Firmware Version V2.2 and all previous versions. a
STB DIO
STBNIC2212 Firmware Version V2.10 and all previous versions.
STBNIP2311 Firmware Version V3.01 and all previous versions.
STBNIP2212 Firmware Version V2.73 and all previous versions.
MITIGATION
Schneider Electric has created a fix for the Telnet and Windriver debug port
vulnerabilities for the BMXNOE0100 and 140NOE77101 modules, which will be
published on the Schneider website. This fix removes the Telnet and Windriver
services from the modules. Organizations need to evaluate the impact of
removing these services prior to applying this fix. ICS-CERT will provide
additional information as mitigations become available for other identified
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. Control system
devices should not directly face the Internet. b
* Locate control system networks and devices behind firewalls, and isolate
them from the business network.
* If remote access is required, employ secure methods, such as Virtual Private
Networks (VPNs), recognizing that VPN is only as secure as the connected
devices.
ICS-CERT reminds organizations to perform proper impact analysis and risk
assessment prior to taking defensive measures. The Control Systems Security
Program (CSSP) also provides a recommended practices section for control
systems on the US-CERT website. Several recommended practices are available
for reading or download, including Improving Industrial Control Systems
Cybersecurity with Defense-in-Depth Strategies. c
Organizations that observe any suspected malicious activity should follow their
established internal procedures and report their findings to ICS-CERT for
tracking and correlation against other incidents.
ICS-CERT CONTACT
ICS-CERT Operations Center 1-877-776-7585 ics-cert@dhs.gov
For CSSP Information and Incident Reporting: www.ics-cert.org
DOCUMENT FAQ
What is an ICS-CERT Alert? An ICS-CERT Alert is intended to provide timely
notification to critical infrastructure owners and operators concerning threats
or activity with the potential to impact critical infrastructure computing
networks.
When is vulnerability attribution provided to researchers? Attribution for
vulnerability discovery is always provided to the vulnerability reporter unless
the reporter declines attribution. ICS-CERT encourages researchers to
coordinate vulnerability details before public release. The public release of
vulnerability details prior to the development of proper mitigations may put
industrial control systems and the public at avoidable risk.
a. These products are only affected by the FTP and hard-coded credential
vulnerabilities.
b. ICS-CERT ALERT,
http://www.us-cert.gov/control_systems/pdf/ICS-Alert-10-301-01.pdf,
website last accessed December 12, 2011
c. Control Systems Security Program (CSSP) Recommended Practices,
http://www.us-cert.gov/control_systems/practices/Recommended_Practices.html,
website last accessed December 12, 2011.
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