high
7.8
CWE
119
Advisory Published
Updated

CVE-2012-6436: Buffer Overflow

First published: Thu Jan 24 2013(Updated: )

Buffer overflow in 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 allows remote attackers to cause a denial of service (CPU crash and communication outage) via a malformed CIP packet.

Credit: ics-cert@hq.dhs.gov

Affected SoftwareAffected VersionHow to fix
Rockwell Automation ControlLogix Controllers<=20
Rockwell Automation GuardLogix controllers firmware<=20
Rockwell Automation MicroLogix Firmware<=1100
Rockwell Automation MicroLogix Firmware<=1400
Rockwell Automation SoftLogix Controllers Firmware<=19
Rockwell Automation 1756-ENBT
Rockwell Automation 1756-EWEB
Rockwell Automation 1768-ENBT
Rockwell Automation 1768-EWEB
Rockwell Automation 1794-AENTR FLEX I/O Ethernet/IP Adapter
Rockwell Automation CompactLogix<=18
Rockwell Automation CompactLogix Controllers Firmware<=19
CompactLogix L32E Controller
Rockwell Automation CompactLogix L35E Controller
Rockwell Automation ControlLogix Controllers<=18
Rockwell Automation FLEXLogix 1788-ENBT
Rockwell Automation GuardLogix Controllers<=18
Rockwell Automation SoftLogix<=18

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2012-6436?

    CVE-2012-6436 is rated as critical due to the potential for remote code execution through buffer overflow.

  • How do I fix CVE-2012-6436?

    To fix CVE-2012-6436, update the affected Rockwell Automation products to the latest firmware version provided by the vendor.

  • What are the affected products of CVE-2012-6436?

    Products affected by CVE-2012-6436 include Rockwell Automation EtherNet/IP communication modules and various controllers like CompactLogix and ControlLogix.

  • What is the impact of CVE-2012-6436?

    The impact of CVE-2012-6436 can allow unauthorized remote access and control over affected systems, potentially leading to system failures.

  • Is there an exploit available for CVE-2012-6436?

    Yes, CVE-2012-6436 is classed as having exploits available, making it a significant concern for industrial automation environments.

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