Vulnerability Monitor

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CVE-2012-6436

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

Published

2013-01-24T21:55:01.477

Last Modified

2025-06-30T22:15:28.573

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.8 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-119
  • Type: Secondary
    CWE-119
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application rockwellautomation controllogix_controllers ≤ 20 Yes
Application rockwellautomation guardlogix_controllers ≤ 20 Yes
Application rockwellautomation micrologix ≤ 1100 Yes
Application rockwellautomation micrologix ≤ 1400 Yes
Application rockwellautomation softlogix_controllers ≤ 19 Yes
Hardware rockwellautomation 1756-enbt - Yes
Hardware rockwellautomation 1756-eweb - Yes
Hardware rockwellautomation 1768-enbt - Yes
Hardware rockwellautomation 1768-eweb - Yes
Hardware rockwellautomation 1794-aentr_flex_i\/o_ethernet\/ip_adapter - Yes
Hardware rockwellautomation compactlogix ≤ 18 Yes
Hardware rockwellautomation compactlogix_controllers ≤ 19 Yes
Hardware rockwellautomation compactlogix_l32e_controller - Yes
Hardware rockwellautomation compactlogix_l35e_controller - Yes
Hardware rockwellautomation controllogix ≤ 18 Yes
Hardware rockwellautomation flexlogix_1788-enbt_adapter - Yes
Hardware rockwellautomation guardlogix ≤ 18 Yes
Hardware rockwellautomation softlogix ≤ 18 Yes
References