π‘οΈ Sentinel: [CRITICAL/HIGH] Fix Uncontrolled Resource Consumption via subprocess timeouts#135
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β¦a subprocess timeouts
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OpenCode Review Overview
Pull request overviewOpenCode cannot approve yet because required coverage evidence did not pass. Check outcome1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence
Coverage evidenceCoverage Evidence
Python project dependencies (requirements.txt)
Python project dependencies (.)
Python project dependencies (./requirements.txt in uv env)
Python coverage with missing-line report (.)
Python docstring coverage advisory
Coverage Decision
Change Flow DAGflowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
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π¨ Severity: HIGH
π‘ Vulnerability: Uncontrolled Resource Consumption (CWE-400) via hung external processes (
ffmpeg,ffprobe,brctl,SetFile). If these processes stall indefinitely, worker threads are blocked causing a Denial of Service.π― Impact: An attacker could intentionally upload malicious files that cause the
ffmpegorffprobeprocesses to hang, exhausting server resources and preventing other users from using the service.π§ Fix: Added explicit
timeoutarguments andsubprocess.TimeoutExpiredhandling to all 5subprocess.runcalls inmedia_shrinker.py. The timeout durations were tailored to the specific tools (e.g., 60s forffprobe, 600s forsilencedetectandiclouddownloads, 3600s forffmpegtranscoding, and 10s forSetFile).β Verification: Ran
python3 -m unittest discover -s testslocally which all passed. Tested that adding timeouts behaves securely and raisesMediaShrinkerErrorwhen timeouts happen.PR created automatically by Jules for task 12914178430439929557 started by @seonghobae