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882000afb3
- added `is_unsafe` - added "negated version" of two tests. These versions do not use `not` and the analysis gets the taint right.
34 lines
1.2 KiB
Plaintext
34 lines
1.2 KiB
Plaintext
import experimental.meta.InlineTaintTest
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predicate isSafeCheck(DataFlow::GuardNode g, ControlFlowNode node, boolean branch) {
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g.(CallNode).getNode().getFunc().(Name).getId() in ["is_safe", "emulated_is_safe"] and
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node = g.(CallNode).getAnArg() and
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branch = true
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}
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predicate isUnsafeCheck(DataFlow::GuardNode g, ControlFlowNode node, boolean branch) {
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g.(CallNode).getNode().getFunc().(Name).getId() in ["is_unsafe", "emulated_is_unsafe"] and
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node = g.(CallNode).getAnArg() and
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branch = false
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}
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class CustomSanitizerOverrides extends TestTaintTrackingConfiguration {
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override predicate isSanitizer(DataFlow::Node node) {
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exists(Call call |
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call.getFunc().(Name).getId() = "emulated_authentication_check" and
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call.getArg(0) = node.asExpr()
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)
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or
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node.asExpr().(Call).getFunc().(Name).getId() = "emulated_escaping"
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or
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node = DataFlow::BarrierGuard<isSafeCheck/3>::getABarrierNode()
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or
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node = DataFlow::BarrierGuard<isUnsafeCheck/3>::getABarrierNode()
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}
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}
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query predicate isSanitizer(TestTaintTrackingConfiguration conf, DataFlow::Node node) {
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exists(node.getLocation().getFile().getRelativePath()) and
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conf.isSanitizer(node)
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}
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