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michaelnebelmichaelnebel
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Java: Indentify more APIs as supported in the telemetry queries (as QL defined sources).
1 parent c5bdd5b commit b8dd047

10 files changed

Lines changed: 139 additions & 22 deletions

‎java/ql/lib/semmle/code/java/dataflow/ApiSources.qll‎

Lines changed: 73 additions & 0 deletions
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@@ -0,0 +1,73 @@
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/** Provides classes representing various flow sources for data flow / taint tracking. */
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private import semmle.code.java.dataflow.ExternalFlow
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private import semmle.code.java.dataflow.FlowSources
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/**
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* A data flow source node.
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*/
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abstract class SourceNode extends DataFlow::Node { }
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/**
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* Module that adds all API like sources to `SourceNode`, excluding sources for cryptography based
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* queries, and queries where sources are not succifiently.
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*/
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private module ApiSources {
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private import FlowSources as FlowSources
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private import semmle.code.java.security.ArbitraryApkInstallation as ArbitraryApkInstallation
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private import semmle.code.java.security.CleartextStorageAndroidDatabaseQuery as CleartextStorageAndroidDatabaseQuery
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private import semmle.code.java.security.CleartextStorageAndroidFilesystemQuery as CleartextStorageAndroidFilesystemQuery
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private import semmle.code.java.security.CleartextStorageSharedPrefsQuery as CleartextStorageSharedPrefsQuery
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private import semmle.code.java.security.ImplicitPendingIntentsQuery as ImplicitPendingIntentsQuery
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private import semmle.code.java.security.ImproperIntentVerificationQuery as ImproperIntentVerificationQuery
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private import semmle.code.java.security.InsecureTrustManagerQuery as InsecureTrustManagerQuery
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private import semmle.code.java.security.MissingJWTSignatureCheckQuery as MissingJWTSignatureCheckQuery
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private import semmle.code.java.security.XSS as Xss
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private import semmle.code.java.security.StackTraceExposureQuery as StackTraceExposureQuery
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private import semmle.code.java.security.UnsafeCertTrustQuery as UnsafeCertTrustQuery
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private import semmle.code.java.security.ZipSlipQuery as ZipSlipQuery
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private class FlowSourcesSourceNode extends SourceNode instanceof FlowSources::SourceNode { }
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private class ArbitraryApkInstallationSources extends SourceNode instanceof ArbitraryApkInstallation::ExternalApkSource
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{ }
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private class CleartextStorageAndroidDatabaseQuerySources extends SourceNode instanceof CleartextStorageAndroidDatabaseQuery::LocalDatabaseOpenMethodCallSource
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{ }
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private class CleartextStorageAndroidFilesystemQuerySources extends SourceNode instanceof CleartextStorageAndroidFilesystemQuery::LocalFileOpenCallSource
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{ }
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private class CleartextStorageSharedPrefsQuerySources extends SourceNode instanceof CleartextStorageSharedPrefsQuery::SharedPreferencesEditorMethodCallSource
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{ }
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private class ImplicitPendingIntentsQuerySources extends SourceNode instanceof ImplicitPendingIntentsQuery::ImplicitPendingIntentSource
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{ }
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private class ImproperIntentVerificationQuerySources extends SourceNode instanceof ImproperIntentVerificationQuery::VerifiedIntentConfigSource
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{ }
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private class InsecureTrustManagerQuerySources extends SourceNode instanceof InsecureTrustManagerQuery::InsecureTrustManagerSource
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{ }
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private class MissingJWTSignatureCheckQuerySources extends SourceNode instanceof MissingJWTSignatureCheckQuery::JwtParserWithInsecureParseSource
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{ }
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private class XssSources extends SourceNode instanceof Xss::XssVulnerableWriterSourceNode { }
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private class StackTraceExposureQuerySources extends SourceNode instanceof StackTraceExposureQuery::GetMessageFlowSource
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{ }
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private class UnsafeCertTrustQuerySources extends SourceNode instanceof UnsafeCertTrustQuery::SslConnectionInit
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{ }
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private class ZipSlipQuerySources extends SourceNode instanceof ZipSlipQuery::ArchiveEntryNameMethodSource
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{ }
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/**
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* Add all models as data sources.
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*/
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private class SourceNodeExternal extends SourceNode {
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SourceNodeExternal() { sourceNode(this, _) }
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}
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}

‎java/ql/lib/semmle/code/java/dataflow/FlowSources.qll‎

Lines changed: 5 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -194,15 +194,17 @@ private class AndroidExternalStorageSource extends RemoteFlowSource {
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}
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/** Class for `tainted` user input. */
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abstract class UserInput extends DataFlow::Node { }
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abstract class UserInput extends SourceNode { }
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/**
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* Input that may be controlled by a remote user.
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*/
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private class RemoteUserInput extends UserInput instanceof RemoteFlowSource { }
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private class RemoteUserInput extends UserInput instanceof RemoteFlowSource {
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override string getThreatModel() { result = super.getThreatModel() }
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}
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/** A node with input that may be controlled by a local user. */
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abstract class LocalUserInput extends UserInput, SourceNode {
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abstract class LocalUserInput extends UserInput {
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override string getThreatModel() { result = "local" }
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}
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‎java/ql/lib/semmle/code/java/security/CleartextStorageAndroidDatabaseQuery.qll‎

Lines changed: 8 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -96,10 +96,15 @@ private predicate localDatabaseStore(DataFlow::Node database, MethodCall store)
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)
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}
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/**
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* A class of local database open method call source nodes.
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*/
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class LocalDatabaseOpenMethodCallSource extends DataFlow::Node {
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LocalDatabaseOpenMethodCallSource() { this.asExpr() instanceof LocalDatabaseOpenMethodCall }
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}
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private module LocalDatabaseFlowConfig implements DataFlow::ConfigSig {
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predicate isSource(DataFlow::Node source) {
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source.asExpr() instanceof LocalDatabaseOpenMethodCall
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}
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predicate isSource(DataFlow::Node source) { source instanceof LocalDatabaseOpenMethodCallSource }
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predicate isSink(DataFlow::Node sink) {
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localDatabaseInput(sink, _) or

‎java/ql/lib/semmle/code/java/security/CleartextStorageAndroidFilesystemQuery.qll‎

Lines changed: 8 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -79,8 +79,15 @@ private class CloseFileMethod extends Method {
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}
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}
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/**
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* A class of local file open call source nodes.
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*/
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class LocalFileOpenCallSource extends DataFlow::Node {
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LocalFileOpenCallSource() { this.asExpr() instanceof LocalFileOpenCall }
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}
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private module FilesystemFlowConfig implements DataFlow::ConfigSig {
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predicate isSource(DataFlow::Node src) { src.asExpr() instanceof LocalFileOpenCall }
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predicate isSource(DataFlow::Node src) { src instanceof LocalFileOpenCallSource }
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predicate isSink(DataFlow::Node sink) {
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filesystemInput(sink, _) or

‎java/ql/lib/semmle/code/java/security/CleartextStorageSharedPrefsQuery.qll‎

Lines changed: 10 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -67,11 +67,18 @@ private predicate sharedPreferencesStore(DataFlow::Node editor, MethodCall m) {
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editor.asExpr() = m.getQualifier().getUnderlyingExpr()
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}
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/**
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* A shared preferences editor method call source nodes.
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*/
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class SharedPreferencesEditorMethodCallSource extends DataFlow::Node {
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SharedPreferencesEditorMethodCallSource() {
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this.asExpr() instanceof SharedPreferencesEditorMethodCall
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}
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}
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/** Flow from `SharedPreferences.Editor` to either a setter or a store method. */
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private module SharedPreferencesFlowConfig implements DataFlow::ConfigSig {
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predicate isSource(DataFlow::Node src) {
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src.asExpr() instanceof SharedPreferencesEditorMethodCall
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}
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predicate isSource(DataFlow::Node src) { src instanceof SharedPreferencesEditorMethodCallSource }
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predicate isSink(DataFlow::Node sink) {
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sharedPreferencesInput(sink, _) or

‎java/ql/lib/semmle/code/java/security/ImproperIntentVerificationQuery.qll‎

Lines changed: 10 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -13,11 +13,18 @@ private class OnReceiveMethod extends Method {
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Parameter getIntentParameter() { result = this.getParameter(1) }
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}
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/**
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* A class of verified intent source nodes.
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*/
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class VerifiedIntentConfigSource extends DataFlow::Node {
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VerifiedIntentConfigSource() {
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this.asParameter() = any(OnReceiveMethod orm).getIntentParameter()
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}
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}
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/** A configuration to detect whether the `action` of an `Intent` is checked. */
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private module VerifiedIntentConfig implements DataFlow::ConfigSig {
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predicate isSource(DataFlow::Node src) {
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src.asParameter() = any(OnReceiveMethod orm).getIntentParameter()
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}
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predicate isSource(DataFlow::Node src) { src instanceof VerifiedIntentConfigSource }
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predicate isSink(DataFlow::Node sink) {
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exists(MethodCall ma |

‎java/ql/lib/semmle/code/java/security/StackTraceExposureQuery.qll‎

Lines changed: 5 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -19,7 +19,7 @@ private class PrintStackTraceMethod extends Method {
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}
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private module ServletWriterSourceToPrintStackTraceMethodFlowConfig implements DataFlow::ConfigSig {
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predicate isSource(DataFlow::Node src) { src.asExpr() instanceof XssVulnerableWriterSource }
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predicate isSource(DataFlow::Node src) { src instanceof XssVulnerableWriterSourceNode }
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predicate isSink(DataFlow::Node sink) {
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exists(MethodCall ma |
@@ -95,7 +95,10 @@ predicate stringifiedStackFlowsExternally(DataFlow::Node externalExpr, Expr stac
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)
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}
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private class GetMessageFlowSource extends DataFlow::Node {
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/**
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* A class of get message source nodes.
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*/
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class GetMessageFlowSource extends DataFlow::Node {
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GetMessageFlowSource() {
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exists(Method method | this.asExpr().(MethodCall).getMethod() = method |
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method.hasName("getMessage") and

‎java/ql/lib/semmle/code/java/security/XSS.qll‎

Lines changed: 8 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -62,7 +62,7 @@ private class DefaultXssSanitizer extends XssSanitizer {
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/** A configuration that tracks data from a servlet writer to an output method. */
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private module XssVulnerableWriterSourceToWritingMethodFlowConfig implements DataFlow::ConfigSig {
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predicate isSource(DataFlow::Node src) { src.asExpr() instanceof XssVulnerableWriterSource }
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predicate isSource(DataFlow::Node src) { src instanceof XssVulnerableWriterSourceNode }
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predicate isSink(DataFlow::Node sink) {
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exists(MethodCall ma |
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}
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}
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/**
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* A class of xss vulnerable writer source nodes.
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*/
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class XssVulnerableWriterSourceNode extends DataFlow::Node {
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XssVulnerableWriterSourceNode() { this.asExpr() instanceof XssVulnerableWriterSource }
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}
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/**
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* Holds if `s` is an HTTP Content-Type vulnerable to XSS.
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*/

‎java/ql/lib/semmle/code/java/security/ZipSlipQuery.qll‎

Lines changed: 10 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -21,13 +21,20 @@ private class ArchiveEntryNameMethod extends Method {
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}
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}
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/**
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* A class of entry name method source nodes.
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*/
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class ArchiveEntryNameMethodSource extends DataFlow::Node {
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ArchiveEntryNameMethodSource() {
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this.asExpr().(MethodCall).getMethod() instanceof ArchiveEntryNameMethod
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}
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}
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/**
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* A taint-tracking configuration for reasoning about unsafe zip file extraction.
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*/
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module ZipSlipConfig implements DataFlow::ConfigSig {
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predicate isSource(DataFlow::Node source) {
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source.asExpr().(MethodCall).getMethod() instanceof ArchiveEntryNameMethod
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}
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predicate isSource(DataFlow::Node source) { source instanceof ArchiveEntryNameMethodSource }
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predicate isSink(DataFlow::Node sink) { sink instanceof FileCreationSink }
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‎java/ql/src/Telemetry/ExternalApi.qll‎

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,7 @@
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/** Provides classes and predicates related to handling APIs from external libraries. */
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private import java
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private import semmle.code.java.dataflow.ApiSources as ApiSources
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private import semmle.code.java.dataflow.DataFlow
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private import semmle.code.java.dataflow.ExternalFlow
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private import semmle.code.java.dataflow.FlowSources
@@ -69,9 +70,7 @@ class ExternalApi extends Callable {
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}
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pragma[nomagic]
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predicate isSource() {
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this.getAnOutput() instanceof RemoteFlowSource or sourceNode(this.getAnOutput(), _)
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}
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predicate isSource() { this.getAnOutput() instanceof ApiSources::SourceNode }
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/** Holds if this API is a known sink. */
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pragma[nomagic]

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