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Java: Add support for BarrierGuards as parameterised modules.

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This commit is contained in:
Anders Schack-Mulligen
2022-05-24 16:36:03 +02:00
parent 1075a141a4
commit a3177368f0
2 changed files with 30 additions and 13 deletions
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22
java/ql/src/Security/CWE/CWE-022/TaintedPath.ql
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@@ -19,15 +19,13 @@ import semmle.code.java.security.PathCreation
import DataFlow::PathGraph
import TaintedPathCommon
class ContainsDotDotSanitizer extends DataFlow::BarrierGuard {
ContainsDotDotSanitizer() {
this.(MethodAccess).getMethod().hasName("contains") and
this.(MethodAccess).getAnArgument().(StringLiteral).getValue() = ".."
}
override predicate checks(Expr e, boolean branch) {
e = this.(MethodAccess).getQualifier() and branch = false
}
predicate containsDotDotSanitizer(Guard g, Expr e, boolean branch) {
exists(MethodAccess contains | g = contains |
contains.getMethod().hasName("contains") and
contains.getAnArgument().(StringLiteral).getValue() = ".." and
e = contains.getQualifier() and
branch = false
)
}
class TaintedPathConfig extends TaintTracking::Configuration {
@@ -41,10 +39,8 @@ class TaintedPathConfig extends TaintTracking::Configuration {
override predicate isSanitizer(DataFlow::Node node) {
exists(Type t | t = node.getType() | t instanceof BoxedType or t instanceof PrimitiveType)
}
override predicate isSanitizerGuard(DataFlow::BarrierGuard guard) {
guard instanceof ContainsDotDotSanitizer
or
node = DataFlow::BarrierGuard<containsDotDotSanitizer/3>::getABarrierNode()
}
}