🛡️ Sentinel: [CRITICAL] Fix type confusion vulnerability in __main__ block inputs - #133
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Python's bool inherits from int, so passing True/False bypasses strict type(var) is int checks. The ipaddress module uses isinstance(var, int), so it evaluates True as 0.0.0.1 and False as 0.0.0.0, causing type confusion. This commit adds explicit type(var) is bool validation to reject boolean inputs. Co-authored-by: ManupaKDU <95234271+ManupaKDU@users.noreply.github.com>
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🚨 Severity: CRITICAL
💡 Vulnerability: Type Confusion (CWE-843). Python's
boolinherits fromint.TrueandFalsebypass thetype() is intchecks in the__main__block and are passed toipaddress.ip_address(), evaluating as0.0.0.1and0.0.0.0respectively, because the module internally usesisinstance(ip, int).🎯 Impact: If boolean values are supplied (e.g., loosely parsed JSON), they evaluate as 0.0.0.1 and 0.0.0.0. While the scanner itself will attempt to ping these addresses, it represents a strict type confusion bypass of validation logic.
🔧 Fix: Added explicit
type(var) is boolchecks to reject booleans before they are parsed, raising aTypeError.✅ Verification: Run
python -m unittest test_testping1.pyto ensure the newtest_main_block_type_confusion_booltest passes.PR created automatically by Jules for task 5040493990740622543 started by @ManupaKDU