FortiOS WebSocket CLI Authentication Bypass via Node.js Exploit Tooling (via webserver)

ATT&CK techniques

Initial Access

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects requests to the FortiOS websocket CLI endpoints ws cli open and ws newcli open originating from a Node.js user-agent, matching the KeyPlug-linked exploit tooling for CVE-2024-23108 and CVE-2024-23109. Adversaries leverage these websocket CLI paths to bypass authentication and reach the Fortinet command interface.

Reporting behind it

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FortiOS WebSocket CLI Authentication Bypass via Node.js Exploit Tooling (via webserver)

Pivot detection · T1190 · 9 related

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