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InformationalSplunk security contentRod Soto

Ollama Abnormal Service Crash Availability Attack

Detects critical service crashes, fatal errors, and abnormal process terminations in Ollama that may indicate exploitation attempts, resource exhaustion attacks, malicious input triggering unhandled exceptions, or…

Description

Detects critical service crashes, fatal errors, and abnormal process terminations in Ollama that may indicate exploitation attempts, resource exhaustion attacks, malicious input triggering unhandled exceptions, or deliberate denial of service attacks designed to disrupt AI model availability and degrade system stability.

Detection logic

Detection requirements

Platform
ESXiIaaSLinuxmacOSWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source category
ollama_server

Known benign triggers

  • Normal service restarts during system updates or maintenance windows, graceful shutdowns with non-zero exit codes, intentional service stops by administrators, software upgrades requiring process termination, out-of-memory conditions on resource-constrained systems, or known bugs in specific Ollama versions that cause benign crashes may trigger this detection during routine operations.

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