high
7.8
CWE
119
Advisory Published
Updated

CVE-2012-6438: 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 (NIC 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-2012-6438?

    CVE-2012-6438 has a high severity status due to its potential to cause a buffer overflow in critical Rockwell Automation devices.

  • How do I fix CVE-2012-6438?

    To fix CVE-2012-6438, you should apply the latest firmware updates provided by Rockwell Automation for the affected devices.

  • Which devices are affected by CVE-2012-6438?

    CVE-2012-6438 affects various Rockwell Automation devices, including ControlLogix, CompactLogix, and MicroLogix controllers as well as several communication modules.

  • What are the risks associated with CVE-2012-6438?

    The risks associated with CVE-2012-6438 include unauthorized access and the potential for remote code execution on the affected devices.

  • Is CVE-2012-6438 actively exploited?

    As of the last reports, there is no confirmed active exploitation of CVE-2012-6438, but its high severity warrants immediate attention.

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