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codeql/javascript/ql/src/AngularJS/DoubleCompilation.ql
2022-09-05 16:11:54 +02:00

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/**
* @name Double compilation
* @description Recompiling an already compiled part of the DOM can lead to
* unexpected behavior of directives, performance problems, and memory leaks.
* @kind problem
* @problem.severity warning
* @security-severity 8.8
* @id js/angular/double-compilation
* @tags reliability
* frameworks/angularjs
* security
* external/cwe/cwe-1176
* @precision very-high
*/
import javascript
from AngularJS::ServiceReference compile, DataFlow::ParameterNode elem, DataFlow::CallNode c
where
compile.getName() = "$compile" and
elem =
any(AngularJS::CustomDirective d)
.getALinkFunction()
.(AngularJS::LinkFunction)
.getElementParameter() and
c = compile.getACall() and
elem.flowsTo(c.getArgument(0)) and
// don't flag $compile calls that specify a `maxPriority`
c.getNumArgument() < 3
select c, "This call to $compile may cause double compilation of '" + elem + "'."