Microsoft Edge Chakra - 'JavascriptFunction::ReparseAsmJsModule' Incorrectly Re-parses

GetParseableFunctionInfo; AssertfunctionInfo; functionInfo-GetFunctionBody-AddDeferParseAttribute; functionInfo-GetFunctionBody-ResetEntryPoint; functionInfo-GetFunctionBody-ResetInParams; FunctionBody funcBody = functionInfo-ParsefunctionRef; if ENABLEPROFILEINFO // This is the first call to the...

Microsoft Edge Chakra - JavascriptFunction::ReparseAsmJsModule Incorrectly Re-parses Exploit

Exploit for windows platform in category dos / poc GetParseableFunctionInfo; AssertfunctionInfo; functionInfo-GetFunctionBody-AddDeferParseAttribute; functionInfo-GetFunctionBody-ResetEntryPoint; functionInfo-GetFunctionBody-ResetInParams; FunctionBody funcBody = functionInfo-ParsefunctionRef; if...

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 Incorrectly Parses Object Patterns

Microsoft Edge - Chakra Incorrectly Parses Object Patterns function f a: b = 0x1111, c = 0x2222, .c = 0x3333 = ; f;...

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 - 'Parser::ParseCatch' Does Not Handle 'eval()' (Denial of Service)

PnodeBlockType::Regular, isPattern ? ScopeTypeCatchParamPattern : ScopeTypeCatch; ... ParseNodePtr pnodePattern = ParseDestructuredLiteraltkLET, true /isDecl/, true /topLevel/, DICForceErrorOnInitializer; ... 1. "pnodeCatchScope" is a temporary block used to create a scope, and it is not actually...

Microsoft Edge - Chakra Incorrectly Parses Object Patterns

function f a: b = 0x1111, c = 0x2222, .c = 0x3333 = ; f;...

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...

Microsoft Edge 38.14393.1066.0 - Memory Corruption with Partial Page Loading

Microsoft Edge 38.14393.1066.0 - Memory Corruption with Partial Page Loading Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1309 There is a security issue in Microsoft Edge related to how HTML documents are loaded. If Edge displays a HTML document from a slow HTTP server, it is...

Microsoft Edge 38.14393.1066.0 - Memory Corruption with Partial Page Loading

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1309 There is a security issue in Microsoft Edge related to how HTML documents are loaded. If Edge displays a HTML document from a slow HTTP server, it is possible that a part of the document is going to be rendered before the serv...

Microsoft Edge 38.14393.1066.0 - COptionsCollectionCacheItem::GetAt Out-of-Bounds Read

Microsoft Edge 38.14393.1066.0 - COptionsCollectionCacheItem::GetAt Out-of-Bounds Read function go select1.multiple = false; var optgroup = document.createElement"optgroup"; select1.addoptgroup; var options = select1.options; select2 = document.createElement"select";...

Microsoft Edge 38.14393.1066.0 - 'COptionsCollectionCacheItem::GetAt' Out-of-Bounds Read

function go select1.multiple = false; var optgroup = document.createElement"optgroup"; select1.addoptgroup; var options = select1.options; select2 = document.createElement"select"; textarea.setSelectionRange0,1000000; select1.length = 2; document.getElementsByTagName'option'0.appendChildtextarea;...

Microsoft Edge COptionsCollectionCacheItem::GetAt Out-Of-Bounds Read Exploit

There is an out-of-bounds read issue in Microsoft Edge that could potentially be turned into remote code execution. The vulnerability has been confirmed on Microsoft Edge 38.14393.1066.0 Microsoft EdgeHTML 14.14393 as well as Microsoft Edge 40.15063.0.0 Microsoft EdgeHTML 15.15063. Microsoft Edge...

Microsoft Edge COptionsCollectionCacheItem::GetAt Out-Of-Bounds Read

Microsoft Edge: out-of-bounds read in COptionsCollectionCacheItem::GetAt CVE-2017-8734 There is an out-of-bounds read issue in Microsoft Edge that could potentially be turned into remote code execution. The vulnerability has been confirmed on Microsoft Edge 38.14393.1066.0 Microsoft EdgeHTML...

Microsoft Edge: ACG bypass using DuplicateHandle

ACG Arbitrary Code Guard in Microsoft Edge is bypassable. The bypass has been tested on Microsoft Edge 40.15063.0.0 running on Windows 10 Enterprise 64-bit with Creators Update Version 1703, OS build 15063.413 Background: To implement ACG...

CVE-2017-8757

Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to the way Microsoft Edge handles objects in memory, aka "Microsoft Edge Remote Code Execution Vulnerability"...

CVE-2017-8753

Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to the way that the Microsoft Edge scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption...

CVE-2017-8756

Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to the way that Microsoft Edge accesses objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE I...

CVE-2017-8755

Microsoft Edge in Microsoft Windows 10 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to the way that the scripting engine handles objects in memory in Microsoft Edge, aka "Scripting Engine Memory Corruption...

CVE-2017-8750

Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 R2, and Microsoft Edge and Internet Explorer in Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allow an attacker to execute arbitrary code in the context of th...