CodeQL queries 1.24

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Tracks user-controlled values into 'eval' calls (special case of js/code-injection), and generates a visualizable path from the source to the sink.

import javascript
import DataFlow
import DataFlow::PathGraph

class EvalTaint extends TaintTracking::Configuration {
  EvalTaint() { this = "EvalTaint" }

  override predicate isSource(Node node) { node instanceof RemoteFlowSource }

  override predicate isSink(Node node) { node = globalVarRef("eval").getACall().getArgument(0) }
}

from EvalTaint cfg, PathNode source, PathNode sink
where cfg.hasFlowPath(source, sink)
select sink.getNode(), source, sink, "Eval with user-controlled input from $@.", source.getNode(),
  "here"