Microsoft Edge: Chakra: Deferred parsing makes wrong scopes #2(CVE-2018-0775)

Since the PoC is only triggerable when the "DeferParse" flag enabled and requires a with statement, I think this is simillar to issue 1310 . PoC: // Enable the flag using '\n'.repeat0x1000 evalfunction f with function printf; ; ; + '\n'.repeat0x1000; PoC 2: // ./ch poc.js -ForceDeferParse functio...

Microsoft Edge Chakra - Deferred Parsing Makes Wrong Scopes (2)

Exploit for windows platform in category dos / poc / Since the PoC is only triggerable when the "DeferParse" flag enabled and requires a with statement, I think this is simillar to issue 1310 . PoC: / // Enable the flag using '\n'.repeat0x1000 evalfunction f with function printf; ; ; +...

Microsoft Edge Chakra Deferred Parsing

Microsoft Edge: Chakra: Deferred parsing makes wrong scopes 2 CVE-2018-0775 Since the PoC is only triggerable when the "DeferParse" flag enabled and requires a with statement, I think this is simillar to issue 1310 . PoC: // Enable the flag using '\n'.repeat0x1000 evalfunction f with function...

Microsoft Edge Chakra - Deferred Parsing Makes Wrong Scopes (2)

Microsoft Edge Chakra - Deferred Parsing Makes Wrong Scopes 2 / Since the PoC is only triggerable when the "DeferParse" flag enabled and requires a with statement, I think this is simillar to issue 1310 . PoC: / // Enable the flag using '\n'.repeat0x1000 evalfunction f with function printf; ; ; +...

Microsoft Edge Chakra - Deferred Parsing Makes Wrong Scopes (2)

/ Since the PoC is only triggerable when the "DeferParse" flag enabled and requires a with statement, I think this is simillar to issue 1310 . PoC: / // Enable the flag using '\n'.repeat0x1000 evalfunction f with function printf; ; ; + '\n'.repeat0x1000; PoC 2: // ./ch poc.js -ForceDeferParse...

Microsoft Edge Charka Wrong Scopes In Deferred Parsing

Microsoft Edge: Chakra: Deferred parsing makes wrong scopes CVE-2017-8740 function fa = function printa; with ; function g f; ; When Chakra executes the above code, it doesn't generate bytecode for "g". This is a feature called "DeferParse". The problem is that the bytecode generated for "f" when...

Microsoft Edge Chakra - Deferred Parsing Makes Wrong Scopes Exploit

Exploit for windows platform in category dos / poc GetFuncExprNameReference || funcInfo-funcExprScope && funcInfo-funcExprScope-GetIsObject ... Js::RegSlot ldFuncExprDst = sym-GetLocation; this-mwriter.Reg1Js::OpCode::LdFuncExpr, ldFuncExprDst; if sym-IsInSlotfuncInfo Js::RegSlot scopeLocation;...

Microsoft Edge Chakra - Deferred Parsing Makes Wrong Scopes

Microsoft Edge Chakra - Deferred Parsing Makes Wrong Scopes GetFuncExprNameReference || funcInfo-funcExprScope && funcInfo-funcExprScope-GetIsObject ... Js::RegSlot ldFuncExprDst = sym-GetLocation; this-mwriter.Reg1Js::OpCode::LdFuncExpr, ldFuncExprDst; if sym-IsInSlotfuncInfo Js::RegSlot...

Microsoft Edge Chakra - Deferred Parsing Makes Wrong Scopes

GetFuncExprNameReference || funcInfo-funcExprScope && funcInfo-funcExprScope-GetIsObject ... Js::RegSlot ldFuncExprDst = sym-GetLocation; this-mwriter.Reg1Js::OpCode::LdFuncExpr, ldFuncExprDst; if sym-IsInSlotfuncInfo Js::RegSlot scopeLocation; AnalysisAssertfuncInfo-funcExprScope; if...