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Move Customizations and Query
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@@ -1,73 +0,0 @@
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/**
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* Provides default sources, sinks and sanitizers for reasoning about
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* overly permissive CORS configurations, as well as
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* extension points for adding your own.
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*/
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import javascript
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/** Module containing sources, sinks, and sanitizers for overly permissive CORS configurations. */
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module CorsPermissiveConfiguration {
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/**
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* A data flow source for permissive CORS configuration.
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*/
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abstract class Source extends DataFlow::Node { }
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/**
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* A data flow sink for permissive CORS configuration.
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*/
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abstract class Sink extends DataFlow::Node { }
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/**
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* A sanitizer for permissive CORS configuration.
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*/
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abstract class Sanitizer extends DataFlow::Node { }
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/** A source of remote user input, considered as a flow source for CORS misconfiguration. */
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class RemoteFlowSourceAsSource extends Source instanceof RemoteFlowSource {
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RemoteFlowSourceAsSource() { not this instanceof ClientSideRemoteFlowSource }
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}
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/** A flow label representing `true` and `null` values. */
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abstract class TrueAndNull extends DataFlow::FlowLabel {
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TrueAndNull() { this = "TrueAndNull" }
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}
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TrueAndNull truenullLabel() { any() }
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/** A flow label representing `*` value. */
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abstract class Wildcard extends DataFlow::FlowLabel {
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Wildcard() { this = "Wildcard" }
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}
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Wildcard wildcardLabel() { any() }
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/** An overly permissive value for `origin` (Apollo) */
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class TrueNullValue extends Source {
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TrueNullValue() { this.mayHaveBooleanValue(true) or this.asExpr() instanceof NullLiteral }
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}
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/** An overly permissive value for `origin` (Express) */
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class WildcardValue extends Source {
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WildcardValue() { this.mayHaveStringValue("*") }
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}
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/**
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* The value of cors origin when initializing the application.
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*/
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class CorsApolloServer extends Sink, DataFlow::ValueNode {
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CorsApolloServer() {
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exists(Apollo::ApolloServer agql |
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this =
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agql.getOptionArgument(0, "cors").getALocalSource().getAPropertyWrite("origin").getRhs()
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)
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}
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}
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/**
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* The value of cors origin when initializing the application.
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*/
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class ExpressCors extends Sink, DataFlow::ValueNode {
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ExpressCors() { exists(Express::CorsConfiguration config | this = config.getOrigin()) }
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}
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}
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@@ -1,46 +0,0 @@
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/**
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* Provides a dataflow taint tracking configuration for reasoning
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* about overly permissive CORS configurations.
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*
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* Note, for performance reasons: only import this file if
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* `CorsPermissiveConfiguration::Configuration` is needed,
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* otherwise `CorsPermissiveConfigurationCustomizations` should
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* be imported instead.
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*/
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import javascript
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import CorsPermissiveConfigurationCustomizations::CorsPermissiveConfiguration
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/**
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* A data flow configuration for overly permissive CORS configuration.
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*/
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class Configuration extends TaintTracking::Configuration {
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Configuration() { this = "CorsPermissiveConfiguration" }
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override predicate isSource(DataFlow::Node source, DataFlow::FlowLabel label) {
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source instanceof TrueNullValue and label = truenullLabel()
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or
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source instanceof WildcardValue and label = wildcardLabel()
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or
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source instanceof RemoteFlowSource and label = DataFlow::FlowLabel::taint()
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}
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override predicate isSink(DataFlow::Node sink, DataFlow::FlowLabel label) {
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sink instanceof CorsApolloServer and label = [DataFlow::FlowLabel::taint(), truenullLabel()]
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or
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sink instanceof ExpressCors and label = [DataFlow::FlowLabel::taint(), wildcardLabel()]
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}
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override predicate isSanitizer(DataFlow::Node node) {
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super.isSanitizer(node) or
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node instanceof Sanitizer
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}
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}
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private class WildcardActivated extends DataFlow::FlowLabel, Wildcard {
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WildcardActivated() { this = this }
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}
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private class TrueAndNullActivated extends DataFlow::FlowLabel, TrueAndNull {
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TrueAndNullActivated() { this = this }
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}
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