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CodeWrights GmbH HART DTM Vulnerability (Update A)

Low RiskICS-CERT ICSA-15-012-01AOct 15, 2015
Summary

DTMStudio versions before 1.5.151 contain an improper input validation vulnerability (CWE-20) that could allow an attacker to crash the application or potentially execute code. The vendor has not released a patch for this issue. CISA recommends implementing defensive measures to minimize exploitation risk.

What this means
What could happen
DTMStudio versions before 1.5.151 contain an improper input validation vulnerability that could allow an attacker to crash the application or execute malicious code if they can supply crafted input to the tool.
Who's at risk
Water utilities and electric utilities that use CodeWrights GmbH DTMStudio for HART intelligent instrument configuration and management. HART (Highway Addressable Remote Transducer) DTM files are commonly used in process measurement and control applications across water treatment, wastewater, and power generation facilities.
How it could be exploited
An attacker would need to craft malicious input that violates expected data validation rules in DTMStudio and deliver it to a user or system running a vulnerable version. This could happen through a malicious HART DTM file, network input, or local file interaction depending on how the tool receives data.
Prerequisites
  • Access to DTMStudio running version before 1.5.151
  • Ability to supply input to the application (file upload, network interface, or local interaction)
  • User interaction to open/process the malicious input
Input validation vulnerability (CWE-20)No patch availableAffects engineering tools used in critical infrastructurePotential for denial of service or code execution
Exploitability
Low exploit probability (EPSS 0.1%)
Affected products (1)
ProductAffected VersionsFix Status
DTMStudio: <1.5.151<1.5.151No fix (EOL)
Remediation & Mitigation
0/4
Do now
0/1
HARDENINGImplement network-level controls to restrict access to systems running DTMStudio from untrusted sources
Long-term hardening
0/1
WORKAROUNDEvaluate alternative HART DTM tools from other vendors that may have better security track records
Mitigations - no patch available
0/2
DTMStudio: <1.5.151 has reached End of Life. The vendor will not release a patch. Apply the following compensating controls:
HARDENINGRestrict DTMStudio use to trusted engineering workstations and limit who can execute it
HARDENINGMonitor DTMStudio applications for unexpected crashes or failures that may indicate exploitation attempts
View full CISA ICS-CERT advisory
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CodeWrights GmbH HART DTM Vulnerability (Update A) - OTPulse