CVE-2012-6436
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
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| rockwellautomation | controllogix_controllers | {"endIncluding":"20"} | |
| rockwellautomation | guardlogix_controllers | {"endIncluding":"20"} | |
| rockwellautomation | micrologix | {"endIncluding":"1100"} | |
| rockwellautomation | softlogix_controllers | {"endIncluding":"19"} | |
| rockwellautomation | micrologix | {"endIncluding":"1400"} | |
| rockwellautomation | 1756-enbt | - | |
| rockwellautomation | 1756-eweb | - | |
| rockwellautomation | 1768-enbt | - | |
| rockwellautomation | 1768-eweb | - | |
| rockwellautomation | 1794-aentr_flex_i\/o_ethernet\/ip_adapter | - | |
| rockwellautomation | compactlogix | {"endIncluding":"18"} | |
| rockwellautomation | compactlogix_controllers | {"endIncluding":"19"} | |
| rockwellautomation | compactlogix_l32e_controller | - | |
| rockwellautomation | compactlogix_l35e_controller | - | |
| rockwellautomation | controllogix | {"endIncluding":"18"} | |
| rockwellautomation | flexlogix_1788-enbt_adapter | - | |
| rockwellautomation | guardlogix | {"endIncluding":"18"} | |
| rockwellautomation | softlogix | {"endIncluding":"18"} | |
References
- http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102
- 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
- https://www.cisa.gov/news-events/ics-advisories/icsa-13-011-03
- http://www.us-cert.gov/control_systems/pdf/ICSA-13-011-03.pdf
CWEs
CWE-119
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.