CVE-2012-6437: Rockwell Automation ControlLogix PLC Improper Authentication

Published Jan 24, 2013
·
Updated

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 do not properly perform authentication for Ethernet firmware updates, which allows remote attackers to execute arbitrary code via a Trojan horse update image.

Other sources

The device does not properly authenticate users and the potential exists for a remote user to upload a new firmware image to the Ethernet card, whether it is a corrupt or legitimate firmware image. Successful exploitation of this vulnerability could cause loss of availability, integrity, and confidentiality and a disruption in communications with other connected devices.

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

— MITRE

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 30, 58391
Event
via NVD·11:16 PM
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Frequently Asked Questions

1

What is the severity of CVE-2012-6437?

CVE-2012-6437 is classified as a medium-severity vulnerability affecting Rockwell Automation products.

2

How do I fix CVE-2012-6437?

To fix CVE-2012-6437, users should apply the latest firmware updates provided by Rockwell Automation for the affected devices.

3

Which products are affected by CVE-2012-6437?

CVE-2012-6437 affects various Rockwell Automation EtherNet/IP products including ControlLogix, CompactLogix, and MicroLogix controllers.

4

Is CVE-2012-6437 widely exploited?

There is no evidence indicating that CVE-2012-6437 is widely exploited in the wild, but users are advised to mitigate the risk.

5

What are the potential impacts of CVE-2012-6437?

Exploitation of CVE-2012-6437 can lead to unauthorized access or manipulation of the affected Rockwell Automation devices.

Company

Resources

Contact

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