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Refactor TemplateInjection

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This commit is contained in:
Ed Minnix
2023-03-21 18:09:12 -04:00
parent 7e1c42442a
commit 787b73317d
3 changed files with 42 additions and 6 deletions
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40
java/ql/lib/semmle/code/java/security/TemplateInjectionQuery.qll
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@@ -5,8 +5,12 @@ import semmle.code.java.dataflow.TaintTracking
import semmle.code.java.dataflow.FlowSources
import semmle.code.java.security.TemplateInjection
/** A taint tracking configuration to reason about server-side template injection (SST) vulnerabilities */
class TemplateInjectionFlowConfig extends TaintTracking::Configuration {
/**
* DEPRECATED: Use `TemplateInjectionFlow` instead.
*
* A taint tracking configuration to reason about server-side template injection (SST) vulnerabilities
*/
deprecated class TemplateInjectionFlowConfig extends TaintTracking::Configuration {
TemplateInjectionFlowConfig() { this = "TemplateInjectionFlowConfig" }
override predicate isSource(DataFlow::Node source, DataFlow::FlowState state) {
@@ -36,3 +40,35 @@ class TemplateInjectionFlowConfig extends TaintTracking::Configuration {
any(TemplateInjectionAdditionalTaintStep a).isAdditionalTaintStep(node1, state1, node2, state2)
}
}
/** A taint tracking configuration to reason about server-side template injection (SST) vulnerabilities */
private module TemplateInjectionFlowConfig implements DataFlow::StateConfigSig {
class FlowState = DataFlow::FlowState;
predicate isSource(DataFlow::Node source, FlowState state) {
source.(TemplateInjectionSource).hasState(state)
}
predicate isSink(DataFlow::Node sink, FlowState state) {
sink.(TemplateInjectionSink).hasState(state)
}
predicate isBarrier(DataFlow::Node sanitizer) { sanitizer instanceof TemplateInjectionSanitizer }
predicate isBarrier(DataFlow::Node sanitizer, FlowState state) {
sanitizer.(TemplateInjectionSanitizerWithState).hasState(state)
}
predicate isAdditionalFlowStep(DataFlow::Node node1, DataFlow::Node node2) {
any(TemplateInjectionAdditionalTaintStep a).isAdditionalTaintStep(node1, node2)
}
predicate isAdditionalFlowStep(
DataFlow::Node node1, FlowState state1, DataFlow::Node node2, FlowState state2
) {
any(TemplateInjectionAdditionalTaintStep a).isAdditionalTaintStep(node1, state1, node2, state2)
}
}
/** Tracks server-side template injection (SST) vulnerabilities */
module TemplateInjectionFlow = TaintTracking::MakeWithState<TemplateInjectionFlowConfig>;