Rockwell Automation ControlLogix PLC Improper Input Validation

7.8 CVSS

Vulnerability 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

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Rubén Santamarta of IOActive identified vulnerabilities in Rockwell Automation’s ControlLogix PLC and released proof-of-concept (exploit) code at the Digital Bond S4 Conference on January 19, 2012.

References

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Affected Vendor

Rockwell Automation

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Affected Software

1756-ENBT, 1756-EWEB, 1768-ENBT, 1768-EWEB communication modules, CompactLogix L32E and L35E controllers, 1788-ENBT FLEXLogix adapter, 1794-AENTR FLEX I/O EtherNet/IP adapter, ControlLogix, CompactLogix, GuardLogix, and SoftLogix, CompactLogix and SoftLogix controllers, ControlLogix and GuardLogix controllers, MicroLogix

Vulnerable Versions:

All, 0, 1100, 1400