{ "success": true, "error": null, "results": { "detectors": [ { "elements": [ { "type": "function", "name": "withdrawBalance_fixed_2", "source_mapping": { "start": 951, "length": 386, "filename_used": "/home/travis/build/crytic/slither/tests/reentrancy.sol", "filename_relative": "tests/reentrancy.sol", "filename_absolute": "/home/travis/build/crytic/slither/tests/reentrancy.sol", "filename_short": "tests/reentrancy.sol", "is_dependency": false, "lines": [ 33, 34, 35, 36, 37, 38, 39, 40 ], "starting_column": 5, "ending_column": 6 }, "type_specific_fields": { "parent": { "type": "contract", "name": "Reentrancy", "source_mapping": { "start": 26, "length": 2334, "filename_used": "/home/travis/build/crytic/slither/tests/reentrancy.sol", "filename_relative": "tests/reentrancy.sol", "filename_absolute": "/home/travis/build/crytic/slither/tests/reentrancy.sol", "filename_short": "tests/reentrancy.sol", "is_dependency": false, "lines": [ 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 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"withdrawBalance_fixed_2()" } } }, "additional_fields": { "underlying_type": "external_calls" } }, { "type": "node", "name": "userBalance[msg.sender] = 0", "source_mapping": { "start": 1303, "length": 27, "filename_used": "/home/travis/build/crytic/slither/tests/reentrancy.sol", "filename_relative": "tests/reentrancy.sol", "filename_absolute": "/home/travis/build/crytic/slither/tests/reentrancy.sol", "filename_short": "tests/reentrancy.sol", "is_dependency": false, "lines": [ 39 ], "starting_column": 9, "ending_column": 36 }, "type_specific_fields": { "parent": { "type": "function", "name": "withdrawBalance_fixed_2", "source_mapping": { "start": 951, "length": 386, "filename_used": "/home/travis/build/crytic/slither/tests/reentrancy.sol", "filename_relative": "tests/reentrancy.sol", "filename_absolute": "/home/travis/build/crytic/slither/tests/reentrancy.sol", "filename_short": "tests/reentrancy.sol", "is_dependency": false, "lines": [ 33, 34, 35, 36, 37, 38, 39, 40 ], "starting_column": 5, "ending_column": 6 }, "type_specific_fields": { "parent": { "type": "contract", "name": "Reentrancy", "source_mapping": { "start": 26, "length": 2334, "filename_used": "/home/travis/build/crytic/slither/tests/reentrancy.sol", "filename_relative": "tests/reentrancy.sol", "filename_absolute": "/home/travis/build/crytic/slither/tests/reentrancy.sol", "filename_short": "tests/reentrancy.sol", "is_dependency": false, "lines": [ 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72 ], "starting_column": 1, "ending_column": 2 } }, "signature": "withdrawBalance_fixed_2()" } } }, "additional_fields": { "underlying_type": "variables_written", "variable_name": "userBalance" } } ], "description": "Reentrancy in Reentrancy.withdrawBalance_fixed_2() (tests/reentrancy.sol#33-40):\n\tExternal calls:\n\t- msg.sender.transfer(userBalance[msg.sender]) (tests/reentrancy.sol#38)\n\tState variables written after the call(s):\n\t- Reentrancy.userBalance (tests/reentrancy.sol#4) in userBalance[msg.sender] = 0 (tests/reentrancy.sol#39)\n", "markdown": "Reentrancy in [Reentrancy.withdrawBalance_fixed_2()](tests/reentrancy.sol#L33-L40):\n\tExternal calls:\n\t- [msg.sender.transfer(userBalance[msg.sender])](tests/reentrancy.sol#L38)\n\tState variables written after the call(s):\n\t- [Reentrancy.userBalance](tests/reentrancy.sol#L4) in [userBalance[msg.sender] = 0](tests/reentrancy.sol#L39)\n", "id": "ff12b17dedf35fcd1f5b1286653a53430009f3689c46c06c1aba1f2d4b17d713", "check": "reentrancy-unlimited-gas", "impact": "Informational", "confidence": "Medium" } ] } }