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Merge pull request #18341 from asgerf/py/diff-informed

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Python: enable diff-informed data flow queries
This commit is contained in:
Asger F
2025-02-11 13:15:44 +01:00
committed by GitHub
parent 4a9be40e1f d3b9d1d89d
commit eedfa4dbb2
54 changed files with 151 additions and 1 deletions
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4
python/ql/src/Security/CWE-020-ExternalAPIs/ExternalAPIs.qll
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@@ -171,6 +171,10 @@ private module UntrustedDataToExternalApiConfig implements DataFlow::ConfigSig {
predicate isSource(DataFlow::Node source) { source instanceof RemoteFlowSource }
predicate isSink(DataFlow::Node sink) { sink instanceof ExternalApiDataNode }
predicate observeDiffInformedIncrementalMode() {
none() // Not used for PR analysis
}
}
/** Global taint-tracking from `RemoteFlowSource`s to `ExternalApiDataNode`s. */

4
python/ql/src/Security/CWE-327/FluentApiModel.qll
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@@ -110,6 +110,10 @@ module InsecureContextConfiguration implements DataFlow::StateConfigSig {
)
)
}
predicate observeDiffInformedIncrementalMode() {
none() // Too complicated, but might be possible after some refactoring.
}
}
private module InsecureContextFlow = DataFlow::GlobalWithState<InsecureContextConfiguration>;

2
python/ql/src/Security/CWE-730/PolynomialReDoS.ql
View File

@@ -23,7 +23,7 @@ from
where
PolynomialReDoSFlow::flowPath(source, sink) and
sinkNode = sink.getNode() and
regexp.getRootTerm() = sinkNode.getRegExp()
regexp = sinkNode.getABacktrackingTerm()
// not (
// source.getNode().(Source).getKind() = "url" and
// regexp.isAtEndLine()

2
python/ql/src/Security/CWE-798/HardcodedCredentials.ql
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@@ -119,6 +119,8 @@ private module HardcodedCredentialsConfig implements DataFlow::ConfigSig {
predicate isSource(DataFlow::Node source) { source instanceof HardcodedValueSource }
predicate isSink(DataFlow::Node sink) { sink instanceof CredentialSink }
predicate observeDiffInformedIncrementalMode() { any() }
}
module HardcodedCredentialsFlow = TaintTracking::Global<HardcodedCredentialsConfig>;

2
python/ql/src/experimental/Security/CWE-022bis/TarSlipImprov.ql
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@@ -109,6 +109,8 @@ private module TarSlipImprovConfig implements DataFlow::ConfigSig {
nodeFrom = nodeTo.(API::CallNode).getArg(0) and
nodeFrom = tarfileOpen().getReturn().getAValueReachableFromSource()
}
predicate observeDiffInformedIncrementalMode() { any() }
}
/** Global taint-tracking for detecting more "TarSlip" vulnerabilities. */

2
python/ql/src/experimental/Security/CWE-091/XsltInjectionQuery.qll
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@@ -19,6 +19,8 @@ module XsltInjectionConfig implements DataFlow::ConfigSig {
// opted for the more simple approach.
nodeTo = elementTreeConstruction(nodeFrom)
}
predicate observeDiffInformedIncrementalMode() { any() }
}
module XsltInjectionFlow = TaintTracking::Global<XsltInjectionConfig>;

2
python/ql/src/experimental/Security/CWE-094/Js2Py.ql
View File

@@ -24,6 +24,8 @@ module Js2PyFlowConfig implements DataFlow::ConfigSig {
API::moduleImport("js2py").getMember(["eval_js", "eval_js6", "EvalJs"]).getACall().getArg(_) =
node
}
predicate observeDiffInformedIncrementalMode() { any() }
}
module Js2PyFlow = TaintTracking::Global<Js2PyFlowConfig>;

2
python/ql/src/experimental/Security/CWE-176/UnicodeBypassValidationQuery.qll
View File

@@ -75,6 +75,8 @@ private module UnicodeBypassValidationConfig implements DataFlow::StateConfigSig
) and
state instanceof PostValidation
}
predicate observeDiffInformedIncrementalMode() { any() }
}
/** Global taint-tracking for detecting "Unicode transformation mishandling" vulnerabilities. */

2
python/ql/src/experimental/Security/CWE-208/TimingAttackAgainstHeaderValue/TimingAttackAgainstHeaderValue.ql
View File

@@ -23,6 +23,8 @@ private module TimingAttackAgainstHeaderValueConfig implements DataFlow::ConfigS
predicate isSource(DataFlow::Node source) { source instanceof ClientSuppliedSecret }
predicate isSink(DataFlow::Node sink) { sink instanceof CompareSink }
predicate observeDiffInformedIncrementalMode() { any() }
}
module TimingAttackAgainstHeaderValueFlow =

2
python/ql/src/experimental/Security/CWE-208/TimingAttackAgainstSensitiveInfo/PossibleTimingAttackAgainstSensitiveInfo.ql
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@@ -23,6 +23,8 @@ private module PossibleTimingAttackAgainstSensitiveInfoConfig implements DataFlo
predicate isSource(DataFlow::Node source) { source instanceof SecretSource }
predicate isSink(DataFlow::Node sink) { sink instanceof NonConstantTimeComparisonSink }
predicate observeDiffInformedIncrementalMode() { any() }
}
module PossibleTimingAttackAgainstSensitiveInfoFlow =

2
python/ql/src/experimental/Security/CWE-208/TimingAttackAgainstSensitiveInfo/TimingAttackAgainstSensitiveInfo.ql
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@@ -24,6 +24,8 @@ private module TimingAttackAgainstSensitiveInfoConfig implements DataFlow::Confi
predicate isSource(DataFlow::Node source) { source instanceof SecretSource }
predicate isSink(DataFlow::Node sink) { sink instanceof NonConstantTimeComparisonSink }
predicate observeDiffInformedIncrementalMode() { any() }
}
module TimingAttackAgainstSensitiveInfoFlow =

2
python/ql/src/experimental/Security/CWE-287-ConstantSecretKey/WebAppConstantSecretKey.ql
View File

@@ -52,6 +52,8 @@ private module WebAppConstantSecretKeyConfig implements DataFlow::StateConfigSig
or
state = Django() and DjangoConstantSecretKeyConfig::isSink(sink)
}
predicate observeDiffInformedIncrementalMode() { any() }
}
module WebAppConstantSecretKeyFlow = TaintTracking::GlobalWithState<WebAppConstantSecretKeyConfig>;

2
python/ql/src/experimental/Security/CWE-327/Azure/UnsafeUsageOfClientSideEncryptionVersion.ql
View File

@@ -145,6 +145,8 @@ private module AzureBlobClientConfig implements DataFlow::StateConfigSig {
node = call.getObject()
)
}
predicate observeDiffInformedIncrementalMode() { any() }
}
module AzureBlobClientFlow = DataFlow::GlobalWithState<AzureBlobClientConfig>;

2
python/ql/src/experimental/Security/CWE-340/TokenBuiltFromUUID.ql
View File

@@ -51,6 +51,8 @@ private module TokenBuiltFromUuidConfig implements DataFlow::ConfigSig {
nodeTo = call
)
}
predicate observeDiffInformedIncrementalMode() { any() }
}
/** Global taint-tracking for detecting "TokenBuiltFromUUID" vulnerabilities. */

2
python/ql/src/experimental/Security/CWE-346/CorsBypass.ql
View File

@@ -79,6 +79,8 @@ module CorsBypassConfig implements DataFlow::ConfigSig {
c.getReturn().asSource() = node2 and n.asSource() = node1
)
}
predicate observeDiffInformedIncrementalMode() { any() }
}
module CorsFlow = TaintTracking::Global<CorsBypassConfig>;

2
python/ql/src/experimental/Security/CWE-348/ClientSuppliedIpUsedInSecurityCheck.ql
View File

@@ -45,6 +45,8 @@ private module ClientSuppliedIpUsedInSecurityCheckConfig implements DataFlow::Co
ss = node.asExpr()
)
}
predicate observeDiffInformedIncrementalMode() { any() }
}
/** Global taint-tracking for detecting "client ip used in security check" vulnerabilities. */

2
python/ql/src/experimental/Security/CWE-770/UnicodeDoS.ql
View File

@@ -108,6 +108,8 @@ private module UnicodeDoSConfig implements DataFlow::ConfigSig {
.getACall()
.getArg(_)
}
predicate observeDiffInformedIncrementalMode() { any() }
}
module UnicodeDoSFlow = TaintTracking::Global<UnicodeDoSConfig>;

2
python/ql/src/experimental/Security/UnsafeUnpackQuery.qll
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@@ -208,6 +208,8 @@ module UnsafeUnpackConfig implements DataFlow::ConfigSig {
nodeFrom = mcn.getArg(0)
)
}
predicate observeDiffInformedIncrementalMode() { any() }
}
/** Global taint-tracking for detecting "UnsafeUnpacking" vulnerabilities. */

4
python/ql/src/experimental/semmle/python/libraries/SmtpLib.qll
View File

@@ -38,6 +38,10 @@ module SmtpLib {
predicate isSink(DataFlow::Node sink) {
sink = smtpMimeMultipartInstance().getACall().getArgByName("_subparts")
}
predicate observeDiffInformedIncrementalMode() {
none() // Used in library model
}
}
module SmtpMessageFlow = TaintTracking::Global<SmtpMessageConfig>;

2
python/ql/src/experimental/semmle/python/security/DecompressionBomb.qll
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@@ -408,6 +408,8 @@ module BombsConfig implements DataFlow::ConfigSig {
isAdditionalTaintStepTextIOWrapper(pred, succ)
)
}
predicate observeDiffInformedIncrementalMode() { any() }
}
module BombsFlow = TaintTracking::Global<BombsConfig>;

2
python/ql/src/experimental/semmle/python/security/InsecureRandomness.qll
View File

@@ -27,6 +27,8 @@ module InsecureRandomness {
predicate isSink(DataFlow::Node sink) { sink instanceof Sink }
predicate isBarrier(DataFlow::Node node) { node instanceof Sanitizer }
predicate observeDiffInformedIncrementalMode() { any() }
}
/** Global taint-tracking for detecting "random values that are not cryptographically secure" vulnerabilities. */

2
python/ql/src/experimental/semmle/python/security/LdapInsecureAuth.qll
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@@ -101,6 +101,8 @@ private module LdapInsecureAuthConfig implements DataFlow::ConfigSig {
predicate isSink(DataFlow::Node sink) {
exists(LdapBind ldapBind | not ldapBind.useSsl() and sink = ldapBind.getHost())
}
predicate observeDiffInformedIncrementalMode() { any() }
}
/** Global taint-tracking for detecting "LDAP insecure authentications" vulnerabilities. */

2
python/ql/src/experimental/semmle/python/security/RemoteCommandExecution.qll
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@@ -10,6 +10,8 @@ module RemoteCommandExecutionConfig implements DataFlow::ConfigSig {
predicate isSource(DataFlow::Node source) { source instanceof RemoteFlowSource }
predicate isSink(DataFlow::Node sink) { sink = any(RemoteCommandExecution rce).getCommand() }
predicate observeDiffInformedIncrementalMode() { any() }
}
/** Global taint-tracking for detecting "secondary server command injection" vulnerabilities. */

2
python/ql/src/experimental/semmle/python/security/ZipSlip.qll
View File

@@ -34,6 +34,8 @@ private module ZipSlipConfig implements DataFlow::ConfigSig {
) and
not sink.getScope().getLocation().getFile().inStdlib()
}
predicate observeDiffInformedIncrementalMode() { any() }
}
/** Global taint-tracking for detecting "zip slip" vulnerabilities. */

2
python/ql/src/experimental/semmle/python/security/dataflow/EmailXss.qll
View File

@@ -34,6 +34,8 @@ private module EmailXssConfig implements DataFlow::ConfigSig {
nodeFrom = htmlContentCall.getArg(0)
)
}
predicate observeDiffInformedIncrementalMode() { any() }
}
/** Global taint-tracking for detecting "Email XSS" vulnerabilities. */

2
python/ql/src/experimental/semmle/python/security/injection/CsvInjection.qll
View File

@@ -17,6 +17,8 @@ private module CsvInjectionConfig implements DataFlow::ConfigSig {
node = DataFlow::BarrierGuard<startsWithCheck/3>::getABarrierNode() or
node instanceof ConstCompareBarrier
}
predicate observeDiffInformedIncrementalMode() { any() }
}
private predicate startsWithCheck(DataFlow::GuardNode g, ControlFlowNode node, boolean branch) {

2
python/ql/src/semmle/python/functions/ModificationOfParameterWithDefault.qll
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@@ -50,6 +50,8 @@ module ModificationOfParameterWithDefault {
or
node.(DataFlow::MethodCallNode).calls(_, "copy")
}
predicate observeDiffInformedIncrementalMode() { any() }
}
/** Global data-flow for detecting modifications of a parameters default value. */