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🛡️ Sentinel: [MEDIUM] Fix bare except blocks preventing DoS - #42

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🛡️ Sentinel: [MEDIUM] Fix bare except blocks preventing DoS#42
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@NoWon1 NoWon1 commented Jul 27, 2026

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🛡️ Sentinel: [MEDIUM] Fix bare except blocks to prevent DoS

🚨 Severity: MEDIUM
💡 Vulnerability: Bare except: blocks inside nested spatial loops were catching and swallowing all exceptions, including critical system-level signals like KeyboardInterrupt and SystemExit, causing potential localized Denial of Service (DoS) and application unresponsiveness.
🎯 Impact: This could lead to a locked environment or silent failures without proper crash outputs.
🔧 Fix: Replaced all instances of bare except: with except Exception: inside Simulation/CancerInvasionSteppables.py. Added a journal entry to document this pattern.
✅ Verification: An AST-based static test has been added to ensure no bare except: blocks are reintroduced. All tests currently pass.


PR created automatically by Jules for task 15678491622773869356 started by @NoWon1

🚨 Severity: MEDIUM
💡 Vulnerability: Bare `except:` blocks inside nested spatial loops were catching and swallowing all exceptions, including critical system-level signals like `KeyboardInterrupt` and `SystemExit`, causing potential localized Denial of Service (DoS) and application unresponsiveness.
🎯 Impact: This could lead to a locked environment or silent failures without proper crash outputs.
🔧 Fix: Replaced all instances of bare `except:` with `except Exception:` inside `Simulation/CancerInvasionSteppables.py`.
✅ Verification: An AST-based static test has been added to ensure no bare `except:` blocks are reintroduced. All tests currently pass.

Co-authored-by: NoWon1 <126711057+NoWon1@users.noreply.github.com>
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Copilot AI review requested due to automatic review settings July 27, 2026 16:10

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2 participants