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πŸ›‘οΈ Sentinel: [MEDIUM] Fix DoS pipe deadlock in AutomationExecutor - #150

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πŸ›‘οΈ Sentinel: [MEDIUM] Fix DoS pipe deadlock in AutomationExecutor#150
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sentinel/fix-dos-pipe-deadlock-1720766462584912278

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@NSEvent NSEvent commented Aug 21, 2026

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πŸ›‘οΈ Sentinel: [MEDIUM] Fix DoS pipe deadlock in AutomationExecutor

🚨 Severity: MEDIUM
πŸ’‘ Vulnerability: The application executed Foundation.Process shell commands and waited for them to exit (process.waitUntilExit()) before attempting to read the standard output and error pipes.
🎯 Impact: If a child process writes more data than the operating system's pipe buffer can hold (typically ~64KB), the child process will block waiting for the parent to read the data. If the parent is blocked on waitUntilExit(), a deadlock occurs, resulting in a Denial of Service.
πŸ”§ Fix: Swapped the order of reading from the pipe and calling waitUntilExit() in TriggerKit/Sources/TriggerKitRuntime/AutomationExecutor.swift to ensure the pipe buffer is drained and the child process can finish executing.
βœ… Verification: Swift syntax validated statically (compiles correctly).


PR created automatically by Jules for task 1720766462584912278 started by @NSEvent

🚨 Severity: MEDIUM
πŸ’‘ Vulnerability: The application executed `Foundation.Process` shell commands and waited for them to exit (`process.waitUntilExit()`) before attempting to read the standard output and error pipes.
🎯 Impact: If a child process writes more data than the operating system's pipe buffer can hold (typically ~64KB), the child process will block waiting for the parent to read the data. If the parent is blocked on `waitUntilExit()`, a deadlock occurs, resulting in a Denial of Service.
πŸ”§ Fix: Swapped the order of reading from the pipe and calling `waitUntilExit()` in `TriggerKit/Sources/TriggerKitRuntime/AutomationExecutor.swift` to ensure the pipe buffer is drained and the child process can finish executing.
βœ… Verification: Swift syntax validated statically (compiles correctly).

Co-authored-by: NSEvent <44446865+NSEvent@users.noreply.github.com>
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