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JS: Migrate an experimental CodeInjection query

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Asger F
2024-12-13 11:54:24 +01:00
parent a398599bfb
commit d83ddfabaa
1 changed files with 17 additions and 12 deletions
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29
javascript/ql/src/experimental/Security/CWE-094-dataURL/CodeInjection.ql
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@@ -49,38 +49,43 @@ class WorkerThreads extends DataFlow::Node {
}
}
class UrlConstructorLabel extends DataFlow::FlowLabel {
UrlConstructorLabel() { this = "UrlConstructorLabel" }
}
newtype TFlowState =
TTaint() or
TUrlConstructor()
/**
* A taint-tracking configuration for reasoning about code injection vulnerabilities.
*/
module CodeInjectionConfig implements DataFlow::StateConfigSig {
class FlowState = DataFlow::FlowLabel;
class FlowState extends TFlowState {
string toString() {
this = TTaint() and result = "taint"
or
this = TUrlConstructor() and result = "url-constructor"
}
}
predicate isSource(DataFlow::Node source, DataFlow::FlowLabel label) {
source instanceof ActiveThreatModelSource and label.isTaint()
predicate isSource(DataFlow::Node source, FlowState label) {
source instanceof ActiveThreatModelSource and label = TTaint()
}
predicate isSink(DataFlow::Node sink) { sink instanceof DynamicImport }
predicate isSink(DataFlow::Node sink, DataFlow::FlowLabel label) {
sink instanceof WorkerThreads and label instanceof UrlConstructorLabel
predicate isSink(DataFlow::Node sink, FlowState label) {
sink instanceof WorkerThreads and label = TUrlConstructor()
}
predicate isBarrier(DataFlow::Node node) { node instanceof Barrier }
predicate isAdditionalFlowStep(
DataFlow::Node pred, DataFlow::FlowLabel predlbl, DataFlow::Node succ,
DataFlow::FlowLabel succlbl
DataFlow::Node pred, FlowState predlbl, DataFlow::Node succ, FlowState succlbl
) {
exists(DataFlow::NewNode newUrl | succ = newUrl |
newUrl = DataFlow::globalVarRef("URL").getAnInstantiation() and
pred = newUrl.getArgument(0)
) and
predlbl.isDataOrTaint() and
succlbl instanceof UrlConstructorLabel
predlbl = TTaint() and
succlbl = TUrlConstructor()
}
}