CVE-2012-6436
Rockwell Automation ControlLogix PLC Improper Input Validation
- State
- Published
- Severity
- 7.8 High
- Published
- Jan 24, 2013
- Updated
- Jun 3, 2026
- Reserved
- Dec 26, 2012
Description
The device does not properly validate the data being sent to the buffer. An attacker can send a malformed CIP packet to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP, which creates a buffer overflow and causes the CPU to crash. Successful exploitation of this vulnerability could cause loss of availability 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
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 2.0 | 7.8 High | AV:N/AC:L/Au:N/C:N/I:N/A:C | icscert |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
1756-ENBT, 1756-EWEB, 1768-ENBT, 1768-EWEB communication modulesRockwell Automation |
|
CompactLogix L32E and L35E controllersRockwell Automation |
|
1788-ENBT FLEXLogix adapterRockwell Automation |
|
1794-AENTR FLEX I/O EtherNet/IP adapterRockwell Automation |
|
ControlLogix, CompactLogix, GuardLogix, and SoftLogixRockwell Automation |
|
CompactLogix and SoftLogix controllersRockwell Automation |
|
ControlLogix and GuardLogix controllersRockwell Automation |
|
MicroLogixRockwell Automation |
|
References
- https://www.cisa.gov/news-events/ics-advisories/icsa-13-011-03
- 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
- http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102
- http://www.us-cert.gov/control_systems/pdf/ICSA-13-011-03.pdf
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