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Python: Move CleartextStorage to new dataflow API

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This commit is contained in:
Rasmus Wriedt Larsen
2023-08-25 16:15:03 +02:00
parent 70095446b6
commit 9d6b96dfd2
2 changed files with 18 additions and 4 deletions
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15
python/ql/lib/semmle/python/security/dataflow/CleartextStorageQuery.qll
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@@ -16,9 +16,11 @@ private import semmle.python.dataflow.new.SensitiveDataSources
import CleartextStorageCustomizations::CleartextStorage
/**
* DEPRECATED: Use `CleartextStorageFlow` module instead.
*
* A taint-tracking configuration for detecting "Clear-text storage of sensitive information".
*/
class Configuration extends TaintTracking::Configuration {
deprecated class Configuration extends TaintTracking::Configuration {
Configuration() { this = "CleartextStorage" }
override predicate isSource(DataFlow::Node source) { source instanceof Source }
@@ -31,3 +33,14 @@ class Configuration extends TaintTracking::Configuration {
node instanceof Sanitizer
}
}
private module CleartextStorageConfig implements DataFlow::ConfigSig {
predicate isSource(DataFlow::Node source) { source instanceof Source }
predicate isSink(DataFlow::Node sink) { sink instanceof Sink }
predicate isBarrier(DataFlow::Node node) { node instanceof Sanitizer }
}
/** Global taint-tracking for detecting "Clear-text storage of sensitive information" vulnerabilities. */
module CleartextStorageFlow = TaintTracking::Global<CleartextStorageConfig>;

7
python/ql/src/Security/CWE-312/CleartextStorage.ql
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@@ -15,12 +15,13 @@
import python
private import semmle.python.dataflow.new.DataFlow
import DataFlow::PathGraph
import CleartextStorageFlow::PathGraph
import semmle.python.security.dataflow.CleartextStorageQuery
from Configuration config, DataFlow::PathNode source, DataFlow::PathNode sink, string classification
from
CleartextStorageFlow::PathNode source, CleartextStorageFlow::PathNode sink, string classification
where
config.hasFlowPath(source, sink) and
CleartextStorageFlow::flowPath(source, sink) and
classification = source.getNode().(Source).getClassification()
select sink.getNode(), source, sink, "This expression stores $@ as clear text.", source.getNode(),
"sensitive data (" + classification + ")"