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michaelnebelmichaelnebel
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Merge pull request #15419 from github/egregius313/csharp/dataflow/threat-modeling/refactor-to-threatmodelflowsource
C#: Refactor C# queries to use `ThreatModelFlowSource` instead of `RemoteFlowSource`
2 parents 15d1105 + f488f23 commit a97510a

33 files changed

+210
-94
lines changed

‎csharp/ql/lib/semmle/code/csharp/frameworks/EntityFramework.qll‎

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@@ -49,6 +49,8 @@ module EntityFramework {
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StoredFlowSource() {
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this.asExpr() = any(PropertyRead read | read.getTarget() instanceof MappedProperty)
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}
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override string getSourceType() { result = "ORM mapped property" }
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}
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private class EFClass extends Class {

‎csharp/ql/lib/semmle/code/csharp/frameworks/NHibernate.qll‎

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@@ -91,6 +91,8 @@ module NHibernate {
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StoredFlowSource() {
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this.asExpr() = any(PropertyRead read | read.getTarget() instanceof MappedProperty)
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}
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override string getSourceType() { result = "ORM mapped property" }
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}
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/**

‎csharp/ql/lib/semmle/code/csharp/security/auth/InsecureDirectObjectReferenceQuery.qll‎

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@@ -1,7 +1,8 @@
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/** Definitions for the Insecure Direct Object Reference query */
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import csharp
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import semmle.code.csharp.dataflow.flowsources.Remote
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import semmle.code.csharp.security.dataflow.flowsources.FlowSources
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deprecated import semmle.code.csharp.dataflow.flowsources.Remote
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import ActionMethods
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/**
@@ -17,7 +18,7 @@ private predicate needsChecks(ActionMethod m) { m.isEdit() and not m.isAdmin() }
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* that may indicate that it's used as the ID for some resource
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*/
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private predicate hasIdParameter(ActionMethod m) {
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exists(RemoteFlowSource src | src.getEnclosingCallable() = m |
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exists(ThreatModelFlowSource src | src.getEnclosingCallable() = m |
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src.asParameter().getName().toLowerCase().matches(["%id", "%idx"])
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or
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// handle cases like `Request.QueryString["Id"]`

‎csharp/ql/lib/semmle/code/csharp/security/dataflow/CodeInjectionQuery.qll‎

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Original file line numberDiff line numberDiff line change
@@ -3,8 +3,7 @@
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*/
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import csharp
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private import semmle.code.csharp.security.dataflow.flowsources.Remote
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private import semmle.code.csharp.security.dataflow.flowsources.Local
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private import semmle.code.csharp.security.dataflow.flowsources.FlowSources
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private import semmle.code.csharp.frameworks.system.codedom.Compiler
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private import semmle.code.csharp.security.Sanitizers
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private import semmle.code.csharp.dataflow.internal.ExternalFlow
@@ -55,11 +54,24 @@ private module CodeInjectionConfig implements DataFlow::ConfigSig {
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*/
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module CodeInjection = TaintTracking::Global<CodeInjectionConfig>;
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/** A source of remote user input. */
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class RemoteSource extends Source instanceof RemoteFlowSource { }
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/**
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* DEPRECATED: Use `ThreatModelSource` instead.
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*
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* A source of remote user input.
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*/
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deprecated class RemoteSource extends DataFlow::Node instanceof RemoteFlowSource { }
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/**
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* DEPRECATED: Use `ThreatModelSource` instead.
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*
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* A source of local user input.
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*/
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deprecated class LocalSource extends DataFlow::Node instanceof LocalFlowSource { }
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private class AddLocalSource extends Source instanceof LocalFlowSource { }
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/** A source of local user input. */
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class LocalSource extends Source instanceof LocalFlowSource { }
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/** A source supported by the current threat model. */
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class ThreatModelSource extends Source instanceof ThreatModelFlowSource { }
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private class SimpleTypeSanitizer extends Sanitizer, SimpleTypeSanitizedExpr { }
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‎csharp/ql/lib/semmle/code/csharp/security/dataflow/CommandInjectionQuery.qll‎

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Original file line numberDiff line numberDiff line change
@@ -3,7 +3,7 @@
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*/
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import csharp
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private import semmle.code.csharp.security.dataflow.flowsources.Remote
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private import semmle.code.csharp.security.dataflow.flowsources.FlowSources
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private import semmle.code.csharp.frameworks.system.Diagnostics
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private import semmle.code.csharp.security.Sanitizers
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private import semmle.code.csharp.dataflow.internal.ExternalFlow
@@ -64,8 +64,15 @@ module CommandInjectionConfig implements DataFlow::ConfigSig {
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*/
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module CommandInjection = TaintTracking::Global<CommandInjectionConfig>;
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/** A source of remote user input. */
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class RemoteSource extends Source instanceof RemoteFlowSource { }
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/**
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* DEPRECATED: Use `ThreatModelSource` instead.
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*
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* A source of remote user input.
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*/
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deprecated class RemoteSource extends DataFlow::Node instanceof RemoteFlowSource { }
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/** A source supported by the current threat model. */
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class ThreatModelSource extends Source instanceof ThreatModelFlowSource { }
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/** Command Injection sinks defined through Models as Data. */
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private class ExternalCommandInjectionExprSink extends Sink {

‎csharp/ql/lib/semmle/code/csharp/security/dataflow/ConditionalBypassQuery.qll‎

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@@ -6,7 +6,7 @@
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import csharp
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private import semmle.code.csharp.controlflow.Guards
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private import semmle.code.csharp.controlflow.BasicBlocks
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private import semmle.code.csharp.security.dataflow.flowsources.Remote
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private import semmle.code.csharp.security.dataflow.flowsources.FlowSources
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private import semmle.code.csharp.frameworks.System
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private import semmle.code.csharp.frameworks.system.Net
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private import semmle.code.csharp.security.SensitiveActions
@@ -60,8 +60,15 @@ private module ConditionalBypassConfig implements DataFlow::ConfigSig {
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*/
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module ConditionalBypass = TaintTracking::Global<ConditionalBypassConfig>;
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/** A source of remote user input. */
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class RemoteSource extends Source instanceof RemoteFlowSource { }
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/**
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* DEPRECATED: Use `ThreatModelSource` instead.
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*
66+
* A source of remote user input.
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*/
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deprecated class RemoteSource extends DataFlow::Node instanceof RemoteFlowSource { }
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/** A source supported by the current threat model. */
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class ThreatModelSource extends Source instanceof ThreatModelFlowSource { }
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/** The result of a reverse dns may be user-controlled. */
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class ReverseDnsSource extends Source {

‎csharp/ql/lib/semmle/code/csharp/security/dataflow/ExposureOfPrivateInformationQuery.qll‎

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@@ -3,7 +3,7 @@
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*/
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import csharp
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private import semmle.code.csharp.security.dataflow.flowsources.Remote
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private import semmle.code.csharp.security.dataflow.flowsources.FlowSources
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private import semmle.code.csharp.security.dataflow.flowsinks.ExternalLocationSink
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private import semmle.code.csharp.security.PrivateData
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‎csharp/ql/lib/semmle/code/csharp/security/dataflow/ExternalAPIsQuery.qll‎

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@@ -5,7 +5,7 @@
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import csharp
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private import semmle.code.csharp.commons.QualifiedName
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private import semmle.code.csharp.dataflow.flowsources.Remote
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private import semmle.code.csharp.security.dataflow.flowsources.FlowSources
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private import semmle.code.csharp.frameworks.System
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private import semmle.code.csharp.dataflow.FlowSummary
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@@ -92,19 +92,19 @@ class ExternalApiDataNode extends DataFlow::Node {
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deprecated class UntrustedDataToExternalApiConfig extends TaintTracking::Configuration {
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UntrustedDataToExternalApiConfig() { this = "UntrustedDataToExternalAPIConfig" }
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95-
override predicate isSource(DataFlow::Node source) { source instanceof RemoteFlowSource }
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override predicate isSource(DataFlow::Node source) { source instanceof ThreatModelFlowSource }
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override predicate isSink(DataFlow::Node sink) { sink instanceof ExternalApiDataNode }
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}
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100-
/** A configuration for tracking flow from `RemoteFlowSource`s to `ExternalApiDataNode`s. */
100+
/** A configuration for tracking flow from `ThreatModelFlowSource`s to `ExternalApiDataNode`s. */
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private module RemoteSourceToExternalApiConfig implements DataFlow::ConfigSig {
102-
predicate isSource(DataFlow::Node source) { source instanceof RemoteFlowSource }
102+
predicate isSource(DataFlow::Node source) { source instanceof ThreatModelFlowSource }
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104104
predicate isSink(DataFlow::Node sink) { sink instanceof ExternalApiDataNode }
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}
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107-
/** A module for tracking flow from `RemoteFlowSource`s to `ExternalApiDataNode`s. */
107+
/** A module for tracking flow from `ThreatModelFlowSource`s to `ExternalApiDataNode`s. */
108108
module RemoteSourceToExternalApi = TaintTracking::Global<RemoteSourceToExternalApiConfig>;
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/** A node representing untrusted data being passed to an external API. */

‎csharp/ql/lib/semmle/code/csharp/security/dataflow/LDAPInjectionQuery.qll‎

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@@ -4,7 +4,7 @@
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*/
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import csharp
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private import semmle.code.csharp.security.dataflow.flowsources.Remote
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private import semmle.code.csharp.security.dataflow.flowsources.FlowSources
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private import semmle.code.csharp.frameworks.system.DirectoryServices
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private import semmle.code.csharp.frameworks.system.directoryservices.Protocols
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private import semmle.code.csharp.security.Sanitizers
@@ -66,8 +66,15 @@ module LdapInjectionConfig implements DataFlow::ConfigSig {
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*/
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module LdapInjection = TaintTracking::Global<LdapInjectionConfig>;
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69-
/** A source of remote user input. */
70-
class RemoteSource extends Source instanceof RemoteFlowSource { }
69+
/**
70+
* DEPRECATED: Use `ThreadModelSource` instead.
71+
*
72+
* A source of remote user input.
73+
*/
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deprecated class RemoteSource extends DataFlow::Node instanceof RemoteFlowSource { }
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/** A source supported by the current threat model. */
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class ThreatModelSource extends Source instanceof ThreatModelFlowSource { }
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/** LDAP sinks defined through Models as Data. */
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private class ExternalLdapExprSink extends Sink {

‎csharp/ql/lib/semmle/code/csharp/security/dataflow/LogForgingQuery.qll‎

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@@ -3,7 +3,7 @@
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*/
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import csharp
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private import semmle.code.csharp.security.dataflow.flowsources.Remote
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private import semmle.code.csharp.security.dataflow.flowsources.FlowSources
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private import semmle.code.csharp.frameworks.System
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private import semmle.code.csharp.frameworks.system.text.RegularExpressions
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private import semmle.code.csharp.security.Sanitizers
@@ -57,7 +57,7 @@ private module LogForgingConfig implements DataFlow::ConfigSig {
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module LogForging = TaintTracking::Global<LogForgingConfig>;
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/** A source of remote user input. */
60-
private class RemoteSource extends Source instanceof RemoteFlowSource { }
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private class ThreatModelSource extends Source instanceof ThreatModelFlowSource { }
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private class HtmlSanitizer extends Sanitizer {
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HtmlSanitizer() { this.asExpr() instanceof HtmlSanitizedExpr }

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