CVE-2012-6442: Rockwell Automation ControlLogix PLC Improper Access Control
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 allow remote attackers to cause a denial of service (control and communication outage) via a CIP message that specifies a reset.
Other sources
When an affected product receives a valid CIP message from an unauthorized or unintended source to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP that instructs the product to reset, a DoS can occur. This situation could cause loss of availability and a disruption of communication 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
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2012-6442?
CVE-2012-6442 has a severity rating of high due to its potential to allow unauthorized access and control of affected devices.
How do I fix CVE-2012-6442?
To remediate CVE-2012-6442, update to the latest firmware version provided by Rockwell Automation for your affected devices.
Which products are affected by CVE-2012-6442?
CVE-2012-6442 affects multiple Rockwell Automation EtherNet/IP products including 1756-ENBT, 1768-ENBT, and CompactLogix controllers among others.
Is CVE-2012-6442 remotely exploitable?
Yes, CVE-2012-6442 can be exploited remotely, potentially allowing attackers to gain control of affected devices.
Are there any workarounds for CVE-2012-6442?
While updating firmware is the primary fix for CVE-2012-6442, reducing network exposure of affected devices can serve as a temporary workaround.