CVE-2012-6436 The device does not properly validate the data being sent to the buffer
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
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| 1756-ENBT, 1756-EWEB, 1768-ENBT, 1768-EWEB communication modules | Versions not published | |
| CompactLogix L32E and L35E controllers | Versions not published | |
| 1788-ENBT FLEXLogix adapter | Versions not published | |
| 1794-AENTR FLEX I/O EtherNet/IP adapter | Versions not published | |
| ControlLogix, CompactLogix, GuardLogix, and SoftLogix 18 | earliest → 18 | No fix stated |
| CompactLogix and SoftLogix controllers 19 | earliest → 19 | No fix stated |
| ControlLogix and GuardLogix controllers 20 | earliest → 20 | No fix stated |
| MicroLogix | 1400 | No fix stated |
| MicroLogix | 1100 | No fix stated |