![]() Note that Pyre doesn't always see the definition of The signature of any modeled function needs to match the signature of theįunction, as seen by Pyre. This annotation can be applied to any parameter, including self, and is useful in scenarios such as when retrieving a value from a collection containting tainted data: In such cases, Pysa models can be annotated with TaintInTaintOut to encode this information for using during the analysis. Sometimes, Pysa is unable to infer that tainted data provided as an argument to a function will be returned by that function. ![]() Specific sources and sinks over using the general -> Sanitize or Then, is to make them as specific as possible. Into your SQL query happened to be HTML escaped. Removing all taint kinds would prevent you from seeing any flows where data going If you are trying to track flows where SQL injection occurs, the escape sanitizer Some of the above sanitizer examples might not be a good idea to use. Other flows when you add a sanitizer for a flow you care about. This means you need to ensure you aren't potentially affecting Remove all taint and aren't restricted to a specific rule or individual source Note that sanitizers come with the risk of losing legitimate taint flows. sanitize_tito_b ( a, b : Sanitize, c ). # Same as before, but only for parameter 'b'ĭef module. # allow taint to reach sinks within the function via any ( TaintInTaintOut )ĭef module. # value, but allow taint sources to be returned from the function as well as # This will remove any taint which propagates through any argument to the return # taint from propagating from any argument to the return ( Parameters )ĭef module. # but allows taint which originates within the function to be returned. # This prevents any taint which passes through any parameter from entering the function, sanitize_parameter ( argument : Sanitize ). # the function, but allows taint which originates within the function to be returned.ĭef module. # This prevents any taint which passes through 'argument' from reaching a sink within sanitize_return ( argument ) - > Sanitize. # from propagating from any argument to the return value.ĭef module. # to be passed in to the function via 'argument'. # This will remove any taint returned by this function, but allow taint
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