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File System Debugger Launched Inside a Container

Elastic Detection Rules

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Summary
This rule detects the invocation of the Linux DebugFS utility within a privileged container, which poses a significant risk because it allows direct file system manipulation and access to sensitive host-level files. DebugFS can be exploited for privilege escalation and potential escape from the container environment to the host system. The detection is triggered when a process related to DebugFS is started within a Linux container, especially when the command line arguments indicate access to system devices (e.g., /dev/sd*). The rule aids in identifying potential misuse of DebugFS and encourages a detailed investigation into the security context and configuration of the environment to mitigate risks associated with container misconfigurations.
Categories
  • Containers
  • Linux
  • Endpoint
  • Cloud
Data Sources
  • Container
  • Process
  • Network Traffic
ATT&CK Techniques
  • T1611
Created: 2025-03-12