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Sub-IoT DASH 7 Alliance Protocol stack implementation

Monitor5.3ICS-CERT ICSA-23-047-13Feb 20, 2023
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

Sub-IoT DASH 7 Alliance protocol stack versions prior to 0.5.0 contain an out-of-bounds write vulnerability (CWE-787) that could allow an attacker to corrupt device memory or achieve code execution on affected IoT devices.

What this means
What could happen
An attacker could trigger an out-of-bounds write in the DASH 7 Alliance protocol stack, potentially corrupting device memory or allowing code injection on affected IoT devices in your network.
Who's at risk
Organizations using Sub-IoT DASH 7 Alliance protocol implementations in IoT sensor networks or wireless mesh systems, particularly in water treatment, electric utility SCADA systems, and distributed industrial monitoring applications.
How it could be exploited
An attacker with network access to a device running vulnerable Sub-IoT DASH 7 stack could send a specially crafted protocol packet that triggers the out-of-bounds write condition, potentially allowing memory corruption or code execution.
Prerequisites
  • Network access to a device running Sub-IoT DASH 7 protocol implementation
  • No authentication required
  • Device must be reachable on the network
remotely exploitableno authentication requiredlow complexityaffects memory integrityout-of-bounds write can lead to code execution
Exploitability
Moderate exploit probability (EPSS 2.3%)
Affected products (1)
ProductAffected VersionsFix Status
Sub-IoT DASH 7 Alliance protocol implementation: All< 0.5.00.5.0 or later
Remediation & Mitigation
0/4
Do now
0/3
HARDENINGEnsure DASH 7 IoT devices are not directly accessible from the Internet; place them behind firewalls and isolate from business networks
HARDENINGRestrict network access to DASH 7 devices to only those endpoints that require direct communication
WORKAROUNDIf remote access to DASH 7 devices is required, use secure VPN with up-to-date firmware and security settings
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXUpgrade Sub-IoT DASH 7 Alliance protocol implementation to version 0.5.0 or later
View full CISA ICS-CERT advisory
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Sub-IoT DASH 7 Alliance Protocol stack implementation | CVSS 5.3 - OTPulse