Microsoft Edge: Chakra: Cross context bug(CVE-2018-0946)

Background The CrossSite class is used for passing JavaScript variables across different contexts. Chakra is basically trying to wrap every variable being passed from a context to another context. The way it wraps an object is, first overwrite the virtual function table pointer of the given objec...

Microsoft Edge Chakra - Cross Context Use-After-Free

Microsoft Edge Chakra - Cross Context Use-After-Free f.onload = null; // Garbage collection for let i = 0; i 10; i++ new ArrayBuffer1024 1024 40; let obj = opt; // "opt" returns the freed string constant. ; // Closing the diffrent context f.src = 'about:blank'; But in fact, if you run the code, y...