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Python: Taint when using unicode

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This commit is contained in:
Rasmus Wriedt Larsen
2020-08-25 12:49:36 +02:00
parent 2a29e26687
commit 0439b83c60
3 changed files with 76 additions and 70 deletions
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6
python/ql/src/experimental/dataflow/internal/TaintTrackingPrivate.qll
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@@ -67,11 +67,7 @@ predicate subscriptStep(DataFlow::CfgNode nodeFrom, DataFlow::CfgNode nodeTo) {
predicate stringMethods(DataFlow::CfgNode nodeFrom, DataFlow::CfgNode nodeTo) {
// transforming something tainted into a string will make the string tainted
exists(CallNode call | call = nodeTo.getNode() |
(
call.getFunction().(NameNode).getId() = "str"
or
call.getFunction().(NameNode).getId() = "bytes"
) and
call.getFunction().(NameNode).getId() in ["str", "bytes", "unicode"] and
(
nodeFrom.getNode() = call.getArg(0)
or