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Python: Move HardcodedCredentials to new dataflow API

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This commit is contained in:
Rasmus Wriedt Larsen
2023-08-25 16:34:36 +02:00
parent 46322b717a
commit dbfe517555
1 changed files with 9 additions and 8 deletions
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17
python/ql/src/Security/CWE-798/HardcodedCredentials.ql
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@@ -16,7 +16,6 @@ import python
import semmle.python.dataflow.new.DataFlow
import semmle.python.dataflow.new.TaintTracking
import semmle.python.filters.Tests
import DataFlow::PathGraph
bindingset[char, fraction]
predicate fewer_characters_than(StrConst str, string char, float fraction) {
@@ -108,17 +107,19 @@ private string getACredentialRegex() {
result = "(?i).*(cert)(?!.*(format|name)).*"
}
class HardcodedCredentialsConfiguration extends TaintTracking::Configuration {
HardcodedCredentialsConfiguration() { this = "Hardcoded credentials configuration" }
private module HardcodedCredentialsConfig implements DataFlow::ConfigSig {
predicate isSource(DataFlow::Node source) { source instanceof HardcodedValueSource }
override predicate isSource(DataFlow::Node source) { source instanceof HardcodedValueSource }
override predicate isSink(DataFlow::Node sink) { sink instanceof CredentialSink }
predicate isSink(DataFlow::Node sink) { sink instanceof CredentialSink }
}
from HardcodedCredentialsConfiguration config, DataFlow::PathNode src, DataFlow::PathNode sink
module HardcodedCredentialsFlow = TaintTracking::Global<HardcodedCredentialsConfig>;
import HardcodedCredentialsFlow::PathGraph
from HardcodedCredentialsFlow::PathNode src, HardcodedCredentialsFlow::PathNode sink
where
config.hasFlowPath(src, sink) and
HardcodedCredentialsFlow::flowPath(src, sink) and
not any(TestScope test).contains(src.getNode().asCfgNode().getNode())
select src.getNode(), src, sink, "This hardcoded value is $@.", sink.getNode(),
"used as credentials"