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Improve protected variable detector

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Have the detector look through all the state variables written
pull/1497/head
Josselin Feist 2 years ago
parent 0dc2a49d6c
commit d22abb1f45
3 changed files with 20 additions and 218 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 2
      slither/detectors/functions/protected_variable.py
  2. 19
      tests/detectors/protected-vars/0.8.2/comment.sol
  3. 217
      tests/detectors/protected-vars/0.8.2/comment.sol.0.8.2.ProtectedVariables.json

2
slither/detectors/functions/protected_variable.py
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@ -48,7 +48,7 @@ contract Buggy{
def _analyze_function(self, function: Function, contract: Contract) -> List[Output]:
results = []
for state_variable_written in function.state_variables_written:
for state_variable_written in function.all_state_variables_written():
if state_variable_written.write_protection:
for function_sig in state_variable_written.write_protection:
function_protection = contract.get_function_from_signature(function_sig)

19
tests/detectors/protected-vars/0.8.2/comment.sol
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@ -33,3 +33,22 @@ contract ReentrancyAndWrite{
}
}
contract Internal {
/// @custom:security write-protection="onlyOwner()"
address owner;
modifier onlyOwner(){
// lets assume there is an access control
_;
}
function buggy() public {
internal_write();
}
function internal_write() internal {
owner = msg.sender;
}
}

217
tests/detectors/protected-vars/0.8.2/comment.sol.0.8.2.ProtectedVariables.json
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@ -1,217 +0,0 @@
[
[
{
"elements": [
{
"type": "function",
"name": "set_not_protected",
"source_mapping": {
"start": 653,
"length": 85,
"filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
"filename_absolute": "/GENERIC_PATH",
"filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
"is_dependency": false,
"lines": [
31,
32,
33
],
"starting_column": 5,
"ending_column": 6
},
"type_specific_fields": {
"parent": {
"type": "contract",
"name": "ReentrancyAndWrite",
"source_mapping": {
"start": 55,
"length": 685,
"filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
"filename_absolute": "/GENERIC_PATH",
"filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
"is_dependency": false,
"lines": [
5,
6,
7,
8,
9,
10,
11,
12,
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27,
28,
29,
30,
31,
32,
33,
34
],
"starting_column": 1,
"ending_column": 2
}
},
"signature": "set_not_protected()"
}
},
{
"type": "function",
"name": "onlyOwner",
"source_mapping": {
"start": 210,
"length": 88,
"filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
"filename_absolute": "/GENERIC_PATH",
"filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
"is_dependency": false,
"lines": [
11,
12,
13,
14
],
"starting_column": 5,
"ending_column": 6
},
"type_specific_fields": {
"parent": {
"type": "contract",
"name": "ReentrancyAndWrite",
"source_mapping": {
"start": 55,
"length": 685,
"filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
"filename_absolute": "/GENERIC_PATH",
"filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
"is_dependency": false,
"lines": [
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15,
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17,
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19,
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27,
28,
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30,
31,
32,
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34
],
"starting_column": 1,
"ending_column": 2
}
},
"signature": "onlyOwner()"
}
},
{
"type": "variable",
"name": "external_contract",
"source_mapping": {
"start": 184,
"length": 19,
"filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
"filename_absolute": "/GENERIC_PATH",
"filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
"is_dependency": false,
"lines": [
9
],
"starting_column": 5,
"ending_column": 24
},
"type_specific_fields": {
"parent": {
"type": "contract",
"name": "ReentrancyAndWrite",
"source_mapping": {
"start": 55,
"length": 685,
"filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
"filename_absolute": "/GENERIC_PATH",
"filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
"is_dependency": false,
"lines": [
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
],
"starting_column": 1,
"ending_column": 2
}
}
}
}
],
"description": "ReentrancyAndWrite.set_not_protected() (tests/detectors/protected-vars/0.8.2/comment.sol#31-33) should have ReentrancyAndWrite.onlyOwner() (tests/detectors/protected-vars/0.8.2/comment.sol#11-14) to protect ReentrancyAndWrite.external_contract (tests/detectors/protected-vars/0.8.2/comment.sol#9)\n",
"markdown": "[ReentrancyAndWrite.set_not_protected()](tests/detectors/protected-vars/0.8.2/comment.sol#L31-L33) should have [ReentrancyAndWrite.onlyOwner()](tests/detectors/protected-vars/0.8.2/comment.sol#L11-L14) to protect [ReentrancyAndWrite.external_contract](tests/detectors/protected-vars/0.8.2/comment.sol#L9)\n",
"first_markdown_element": "tests/detectors/protected-vars/0.8.2/comment.sol#L31-L33",
"id": "3f3bc8c8a9b3e23482f47f1133aceaed81c2c781c6aaf25656a8e578c9f6cb0e",
"check": "protected-vars",
"impact": "High",
"confidence": "High"
}
]
]
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