Shell breakout via injected GitHub issue title in Actions runner worker process
Detects potential command injection on GitHub Actions self-hosted runners where a child shell process (bash/sh) is spawned by the Runner.Worker or Runner.Listener processes. The rule looks for a specific pattern of shell command lines containing single quotes, semicolons, and the 'echo' command, which is indicative of a breakout attack exploiting unsanitized GitHub event data (e.g., issue titles) being passed into shell commands.
Microsoft Sentinel (KQL)
