Delta Electronics DTN Soft
Plan Patch7.8ICS-CERT ICSA-24-242-02Aug 29, 2024
Attack VectorLocal
Auth RequiredNone
ComplexityLow
User InteractionRequired
Summary
DTN Soft versions 2.0.1 and earlier contain an unsafe deserialization vulnerability (CWE-502) that allows arbitrary code execution when a user interacts with a malicious file. The vulnerability is triggered by deserialization of untrusted data and requires local or LAN-level access and user interaction. It is not remotely exploitable over the internet.
What this means
What could happen
An attacker with local access to a machine running DTN Soft could execute arbitrary code with the privileges of the logged-in user, potentially compromising engineering workstations or HMIs used to manage your water/power distribution systems.
Who's at risk
Water utilities and electric utilities using Delta Electronics DTN Soft for SCADA engineering, configuration, or HMI functions. Any organization where engineering staff use DTN Soft on workstations connected to control system networks or the business network.
How it could be exploited
An attacker needs physical or local network access to a computer running DTN Soft. They would trick a user into opening a malicious file or link (social engineering), which triggers deserialization of untrusted data (CWE-502), allowing code execution on that machine. From there, the attacker could modify system configurations, steal credentials, or launch attacks on connected control systems.
Prerequisites
- Local or LAN access to the machine running DTN Soft
- User interaction required: victim must open/interact with a malicious file or link
- DTN Soft version 2.0.1 or earlier installed
Local/LAN access required (not remotely exploitable)Requires user interaction (file open/click)Deserialization vulnerability with high code execution impactLow patch availability urgency (no active exploitation reported)
Exploitability
Moderate exploit probability (EPSS 5.6%)
Affected products (1)
ProductAffected VersionsFix Status
DTN Soft: <=2.0.1≤ 2.0.12.1
Remediation & Mitigation
0/4
Do now
0/1WORKAROUNDDo not click web links or open attachments from unsolicited email; educate users on recognizing phishing and social engineering
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXUpdate DTN Soft to version 2.1 or later
Long-term hardening
0/2HARDENINGIsolate engineering workstations and HMI systems running DTN Soft from the business network using firewalls and network segmentation
HARDENINGIf remote access to DTN Soft systems is necessary, use a VPN with current security patches and require multi-factor authentication
CVEs (1)
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