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JS: Diff-informed queries: phase 3 (non-trivial locations) #20078

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JS: Diff-informed queries: phase 3 (non-trivial locations) #20078

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43e318f
[DIFF-INFORMED] JS: IndirectCommandInjection
d10c Jul 16, 2025
f3974c3
[DIFF-INFORMED] JS: ShellCommandInjectionFromEnvironment
d10c Jul 16, 2025
4b43cf4
[DIFF-INFORMED] JS: EnvValueAndKeyInjection
d10c Jul 16, 2025
bd6b27e
[DIFF-INFORMED] JS: decodeJwtWithoutVerification
d10c Jul 16, 2025
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7 changes: 4 additions & 3 deletions javascript/ql/lib/semmle/javascript/security/dataflow/IndirectCommandInjectionQuery.qll
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Original file line number Diff line number Diff line change
Expand Up @@ -30,9 +30,10 @@ module IndirectCommandInjectionConfig implements DataFlow::ConfigSig {
predicate observeDiffInformedIncrementalMode() { any() }

Location getASelectedSinkLocation(DataFlow::Node sink) {
exists(DataFlow::Node node |
isSinkWithHighlight(sink, node) and
result = node.getLocation()
exists(DataFlow::Node highlight | result = highlight.getLocation() |
if isSinkWithHighlight(sink, _)
then isSinkWithHighlight(sink, highlight)
else highlight = sink
)
}
}
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7 changes: 4 additions & 3 deletions .../ql/lib/semmle/javascript/security/dataflow/ShellCommandInjectionFromEnvironmentQuery.qll
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Expand Up @@ -31,9 +31,10 @@ module ShellCommandInjectionFromEnvironmentConfig implements DataFlow::ConfigSig
predicate observeDiffInformedIncrementalMode() { any() }

Location getASelectedSinkLocation(DataFlow::Node sink) {
exists(DataFlow::Node node |
isSinkWithHighlight(sink, node) and
result = node.getLocation()
exists(DataFlow::Node highlight | result = highlight.getLocation() |
if isSinkWithHighlight(sink, _)
then isSinkWithHighlight(sink, highlight)
else highlight = sink
)
}
}
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4 changes: 4 additions & 0 deletions javascript/ql/src/experimental/Security/CWE-099/EnvValueAndKeyInjection.ql
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Expand Up @@ -33,6 +33,10 @@ module EnvValueAndKeyInjectionConfig implements DataFlow::ConfigSig {
)
)
}

predicate observeDiffInformedIncrementalMode() {
none() // can't override location accurately because of secondary use in select.
}
}

module EnvValueAndKeyInjectionFlow = TaintTracking::Global<EnvValueAndKeyInjectionConfig>;
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4 changes: 4 additions & 0 deletions javascript/ql/src/experimental/Security/CWE-347/decodeJwtWithoutVerification.ql
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Expand Up @@ -27,6 +27,10 @@ module VerifiedDecodeConfig implements DataFlow::ConfigSig {
predicate isSource(DataFlow::Node source) { source instanceof ActiveThreatModelSource }

predicate isSink(DataFlow::Node sink) { sink = verifiedDecode() }

predicate observeDiffInformedIncrementalMode() {
none() // used as secondary config
}
}

module VerifiedDecodeFlow = TaintTracking::Global<VerifiedDecodeConfig>;
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