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Ruby: configsig rb/user-controlled-bypass

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Alex Ford
2023-08-24 12:21:11 +01:00
parent 377570f361
commit 2536f1a0cd
2 changed files with 23 additions and 6 deletions
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18
ruby/ql/lib/codeql/ruby/security/ConditionalBypassQuery.qll
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@@ -2,7 +2,7 @@
* Provides a taint tracking configuration for reasoning about bypass of sensitive action guards.
*
* Note, for performance reasons: only import this file if
* `ConditionalBypass::Configuration` is needed, otherwise
* `ConditionalBypassFlow` is needed, otherwise
* `ConditionalBypassCustomizations` should be imported instead.
*/
@@ -13,8 +13,9 @@ import ConditionalBypassCustomizations::ConditionalBypass
/**
* A taint tracking configuration for bypass of sensitive action guards.
* DEPRECATED: Use `ConditionalBypassFlow` instead
*/
class Configuration extends TaintTracking::Configuration {
deprecated class Configuration extends TaintTracking::Configuration {
Configuration() { this = "ConditionalBypass" }
override predicate isSource(DataFlow::Node source) { source instanceof Source }
@@ -26,3 +27,16 @@ class Configuration extends TaintTracking::Configuration {
node instanceof Sanitizer
}
}
private module Config implements DataFlow::ConfigSig {
predicate isSource(DataFlow::Node source) { source instanceof Source }
predicate isSink(DataFlow::Node sink) { sink instanceof Sink }
predicate isBarrier(DataFlow::Node node) { node instanceof Sanitizer }
}
/**
* Taint-tracking for bypass of sensitive action guards.
*/
module ConditionalBypassFlow = TaintTracking::Global<Config>;