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Inductive Automation Ignition (Update B)

Act Now9.8ICS-CERT ICSA-20-147-01May 26, 2020
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

Inductive Automation Ignition Gateway versions before 8.0.10 and 7.9.14 contain an unsafe deserialization vulnerability (CWE-502) that allows remote attackers without authentication to execute arbitrary code on the Gateway host. This affects all Ignition 8.x and 7.x Gateway installations. The vulnerability impacts the integrity, confidentiality, and availability of the automation system. CVE-2020-14479 does not have a fix available at this time; Inductive Automation plans to address it in future versions.

What this means
What could happen
An attacker with network access to an Ignition Gateway could execute arbitrary code and completely compromise the system, potentially disrupting process monitoring, control logic execution, and data logging in your automation infrastructure.
Who's at risk
Manufacturing facilities, utilities, and any organization using Inductive Automation Ignition for process visualization, data aggregation, and SCADA control should be concerned. This affects both Ignition 7 and 8 Gateway installations used for supervisory control and monitoring of industrial processes.
How it could be exploited
An attacker connects to the unpatched Ignition Gateway service from the network (no authentication required) and sends a specially crafted request that triggers unsafe deserialization (CWE-502), allowing arbitrary code execution on the Gateway host.
Prerequisites
  • Network access to the Ignition Gateway service port
  • No credentials required
  • Ignition 8.x running version before 8.0.10 OR Ignition 7.x running version before 7.9.14
Remotely exploitableNo authentication requiredLow complexity attackHigh EPSS score (20.9%)Affects control system infrastructureUnsafe deserialization vulnerability
Exploitability
High exploit probability (EPSS 20.9%)
Affected products (2)
1 with fix1 EOL
ProductAffected VersionsFix Status
Ignition 8 Gateway:< 8.0.108.0.10
Ignition 7 Gateway:< 7.9.14No fix (EOL)
Remediation & Mitigation
0/5
Do now
0/1
WORKAROUNDImplement firewall rules to restrict network access to the Ignition Gateway service to only known client and server machines that require legitimate communication
Schedule — requires maintenance window
0/2

Patching may require device reboot — plan for process interruption

HOTFIXUpgrade Ignition 8.x installations to version 8.0.10 or later
HOTFIXUpgrade Ignition 7.x installations to version 7.9.14 or later
Mitigations - no patch available
0/2
Ignition 7 Gateway: has reached End of Life. The vendor will not release a patch. Apply the following compensating controls:
HARDENINGIsolate Ignition Gateway systems from the business network and the Internet using network segmentation
HARDENINGIf remote access to Ignition is needed, use a VPN with secure configuration and ensure it is kept current
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