CVE-2012-6440: Rockwell Automation ControlLogix PLC Improper Input Validation

Published Jan 24, 2013
·
Updated

The Web server password authentication mechanism used by the products is vulnerable to a MitM and Replay attack. Successful exploitation of this vulnerability will allow unauthorized access of the product’s Web server to view and alter product configuration and diagnostics information.

Rockwell Automation EtherNet/IP products; 1756-ENBT, 1756-EWEB, 1768-ENBT, and 1768-EWEB communication modules; CompactLogix L32E and L35E controllers; 1788-ENBT FLEXLogix adapter; 1794-AENTR FLEX I/O EtherNet/IP adapter; ControlLogix 18 and earlier; CompactLogix 18 and earlier; GuardLogix 18 and earlier; SoftLogix 18 and earlier; CompactLogix controllers 19 and earlier; SoftLogix controllers 19 and earlier; ControlLogix controllers 20 and earlier; GuardLogix controllers 20 and earlier; and MicroLogix 1100 and 1400

Other sources

The web-server password-authentication functionality in Rockwell Automation EtherNet/IP products; 1756-ENBT, 1756-EWEB, 1768-ENBT, and 1768-EWEB communication modules; CompactLogix L32E and L35E controllers; 1788-ENBT FLEXLogix adapter; 1794-AENTR FLEX I/O EtherNet/IP adapter; ControlLogix 18 and earlier; CompactLogix 18 and earlier; GuardLogix 18 and earlier; SoftLogix 18 and earlier; CompactLogix controllers 19 and earlier; SoftLogix controllers 19 and earlier; ControlLogix controllers 20 and earlier; GuardLogix controllers 20 and earlier; and MicroLogix 1100 and 1400 allows man-in-the-middle attackers to conduct replay attacks via HTTP traffic.

Affected Software

18 affected components
rockwellautomation Controllogix Controllers<=20
rockwellautomation Guardlogix Controllers<=20
rockwellautomation Micrologix<=1100
rockwellautomation Micrologix<=1400
rockwellautomation Softlogix Controllers<=19
rockwellautomation 1756-enbt
rockwellautomation 1756-eweb
rockwellautomation 1768-enbt
rockwellautomation 1768-eweb
rockwellautomation 1794-aentr Flex I\/o Ethernet\/ip Adapter
rockwellautomation Compactlogix<=18
rockwellautomation Compactlogix Controllers<=19
rockwellautomation Compactlogix L32e Controller
rockwellautomation Compactlogix L35e Controller
rockwellautomation Controllogix<=18
rockwellautomation Flexlogix 1788-enbt Adapter
rockwellautomation Guardlogix<=18
rockwellautomation Softlogix<=18

Remediation

Information

According to Rockwell, any of the above products that become affected by a vulnerability can be reset by rebooting or power cycling the affected product. After the reboot, the affected product may require some reconfiguration. To mitigate the vulnerabilities, Rockwell has developed and released security patches on July 18, 2012, to address each of the issues. To download and install the patches please refer to Rockwell’s Advisories at: https://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154 https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155 https://rockwellautomation.custhelp.com/app/answers/detail/aid/470156 For more information on security with Rockwell Automation products, please refer to Rockwell’s Security Advisory Index http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102 .

Event History

Jan 24, 2013
CVE Published
via MITRE·09:00 PM
Data Sourced
via MITRE·09:00 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·09:55 PM
DescriptionSeverityWeaknessAffected Software
Oct 31, 58391
Event
via NVD·12:05 AM
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Frequently Asked Questions

1

What is the severity of CVE-2012-6440?

CVE-2012-6440 has a high severity rating due to its potential impact on unauthorized access to sensitive systems.

2

How do I fix CVE-2012-6440?

To mitigate CVE-2012-6440, ensure that you apply the latest firmware updates provided by Rockwell Automation for affected products.

3

Which products are affected by CVE-2012-6440?

CVE-2012-6440 affects several Rockwell Automation EtherNet/IP communication modules and controllers, including ControlLogix and CompactLogix models.

4

What kind of vulnerabilities does CVE-2012-6440 represent?

CVE-2012-6440 represents a vulnerability in the password-authentication functionality of specific Rockwell Automation products.

5

Is my system vulnerable if I use Rockwell Automation products?

If you are using the specified models and firmware versions listed in CVE-2012-6440, your system may be vulnerable.

Company

Resources

Contact

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