title: Rockwell Automation ControlLogix Communication Modules Vulnerable to Remote Code Execution
description:
Where this vulnerability exists in the Rockwell Automation 1756 EN2* and 1756 EN3* ControlLogix communication products, it could allow a malicious user to perform remote code execution with persistence on the target system through maliciously crafted CIP messages. This includes the ability to modify, deny, and exfiltrate data passing through the device.
problem types: CWE-787 Out-of-bounds Write
affected:
{
defaultStatus: unaffected
product: 1756-EN2T Series A, B, C
vendor: Rockwell Automation
versions:
status: affected, version: <=5.008 & 5.028
}
{
defaultStatus: unaffected
product: 1756-EN2T Series D
vendor: Rockwell Automation
versions:
status: affected, version: <=11.003
}
{
defaultStatus: unaffected
product: 1756-EN2TK Series A, B, C
vendor: Rockwell Automation
versions:
status: affected, version: <=5.008 & 5.028
}
{
defaultStatus: unaffected
product: 1756-EN2TXT Series A, B, C
vendor: Rockwell Automation
versions:
status: affected, version: <=5.008 & 5.028
}
{
defaultStatus: unaffected
product: 1756-EN2TXT Series D
vendor: Rockwell Automation
versions:
status: affected, version: <=11.003
}
{
defaultStatus: unaffected
product: 1756-EN2TP Series A
vendor: Rockwell Automation
versions:
status: affected, version: <=11.003
}
{
defaultStatus: unaffected
product: 1756-EN2TPK Series A
vendor: Rockwell Automation
versions:
status: affected, version: <=11.003
}
{
defaultStatus: unaffected
product: 1756-EN2TPXT Series A
vendor: Rockwell Auotmation
versions:
status: affected, version: <=11.003
}
{
defaultStatus: unaffected
product: 1756-EN2TR Series A, B
vendor: Rockwell Automation
versions:
status: affected, version: <=5.008 & 5.028
}
{
defaultStatus: unaffected
product: 1756-EN2TR Series C
vendor: Rockwell Automation
versions:
status: affected, version: <=11.003
}
{
defaultStatus: unaffected
product: 1756-EN2TRK Series A, B
vendor: Rockwell Automation
versions:
status: affected, version: <=5.008 & 5.028
}
{
defaultStatus: unaffected
product: 1756-EN2TRK Series C
vendor: Rockwell Automation
versions:
status: affected, version: <=11.003
}
{
defaultStatus: unaffected
product: 1756-EN2TRXT Series A, B
vendor: Rockwell Automation
versions:
status: affected, version: <=5.008 & 5.028
}
{
defaultStatus: unaffected
product: 1756-EN2TRXT Series C
vendor: Rockwell Automation
versions:
status: affected, version: <=11.003
}
{
defaultStatus: unaffected
product: 1756-EN2F Series A, B
vendor: Rockwell Automation
versions:
status: affected, version: <=5.008 & 5.028
}
{
defaultStatus: unaffected
product: 1756-EN2F Series C
vendor: Rockwell Automation
versions:
status: affected, version: <=11.003
}
{
defaultStatus: unaffected
product: 1756-EN2FK Series A, B
vendor: Rockwell Automation
versions:
status: affected, version: <=5.008 & 5.028
}
{
defaultStatus: unaffected
product: 1756-EN2FK Series C
vendor: Rockwell Automation
versions:
status: affected, version: <=11.003
}
{
defaultStatus: unaffected
product: 1756-EN3TR Series A
vendor: Rockwell Automation
versions:
status: affected, version: <=5.008 & 5.028
}
{
defaultStatus: unaffected
product: 1756-EN3TR Series B
vendor: Rockwell Automation
versions:
status: affected, version: <=11.003
}
{
defaultStatus: unaffected
product: 1756-EN3TRK Series A
vendor: Rockwell Automation
versions:
status: affected, version: <=5.008 & 5.028
}
{
defaultStatus: unaffected
product: 1756-EN3TRK Series B
vendor: Rockwell Automation
versions:
status: affected, version: <=11.003
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 9.8
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions:
*  Update firmware. Update EN2* ControlLogix communications modules to mitigated firmware.
*  Properly segment networks. Given a cyber actor would require network connectivity to the communication module to exploit the vulnerability, organizations should ensure ICS/SCADA networks are properly segmented within the process structure as well as from the Internet and other non-essential networks.
*  Implement detection signatures. Use appended Snort signatures to monitor and detect anomalous Common Industrial Protocol (CIP) packets to Rockwell Automation devices.