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JS: Add taint source/sink summary queries #5728

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Merged
codeql-ci merged 3 commits into from
May 11, 2021
Merged

JS: Add taint source/sink summary queries #5728

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9f8a9b9
JS: Add taint source/sink summary queries
asgerf Apr 20, 2021
02707f0
JS: informational -> info
asgerf Apr 20, 2021
df5eab3
JS: Update relevantTaintSource()
asgerf May 10, 2021
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15 changes: 15 additions & 0 deletions javascript/ql/src/Summary/TaintSinks.ql
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Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
/**
* @name Taint sinks
* @description Expressions that are vulnerable if containing untrusted data.
* @kind problem
* @problem.severity info
* @id js/summary/taint-sinks
* @tags summary
* @precision medium
*/

import javascript
import meta.internal.TaintMetrics

from string kind
select relevantTaintSink(kind), kind + " sink"
16 changes: 16 additions & 0 deletions javascript/ql/src/Summary/TaintSources.ql
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
/**
* @name Taint sources
* @description Sources of untrusted input.
* @kind problem
* @problem.severity info
* @id js/summary/taint-sources
* @tags summary
* @precision medium
*/

import javascript
import meta.internal.TaintMetrics

from RemoteFlowSource node
where node = relevantTaintSource()
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@erik-krogh erik-krogh Apr 25, 2021

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relevantTaintSource has return-type DataFlow::Node, so I think the node here should have that type.

Suggested change
from RemoteFlowSource node
where node = relevantTaintSource()
from DataFlow::Node node
where node = relevantTaintSource()

Or relevantTaintSource could be changed to have the return-type RemoteFlowSource.
DOM::locationSource() is a RemoteFlowSource anyway, so relevantTaintSource could be simplified in the same go.

select node, node.getSourceType()