Microsoft Edge Chakra JIT - BackwardPass::RemoveEmptyLoopAfterMemOp Does not Insert Branches

Microsoft Edge Chakra JIT - BackwardPass::RemoveEmptyLoopAfterMemOp Does not Insert Branches / The optimizations for memory operations may leave empty loops as follows: for let i = 0; i arr.length; i++ arri = 0; Becomes: Memsetarr, 0, arr.length; for let i = 0; i arr.length; i++ // empty! These...

Microsoft Edge Chakra JIT - Op_MaxInAnArray and Op_MinInAnArray can Explicitly call User-Defined Jav

Exploit for windows platform in category dos / poc / 1. Call patterns like "Math.max.applyMath, 1, 2, 3, 4, 5" and "Math.max.applyMath, arr" can be optimized to directly call the method "JavascriptMath::MaxInAnArray" in the Inline Phase. 2. The method takes the original method "Math.max" as the...

Microsoft Edge Chakra - 'asm.js' Out-of-Bounds Read

/ Here's a snippet of AsmJSByteCodeGenerator::EmitAsmJsFunctionBody. AsmJsVar initSource = nullptr; if decl-sxVar.pnodeInit-nop == knopName AsmJsSymbol initSym = mCompiler-LookupIdentifierdecl-sxVar.pnodeInit-name, mFunction; if initSym-GetSymbolType == AsmJsSymbol::Variable // in this case we ar...

Microsoft Chakra Memory Allocator Integer Overflow Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Chakra. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within Chakra's memory...

Scripting Engine Security Feature Bypass Vulnerability

A security feature bypass vulnerability exists in the Microsoft Chakra scripting engine that allows Control Flow Guard CFG to be bypassed. By itself, the CFG bypass vulnerability does not allow arbitrary code execution. However, an attacker could use the CFG bypass vulnerability in conjunction wi...

Chakra Scripting Engine Memory Corruption Vulnerability

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge HTML-based. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who...

Chakra Scripting Engine Memory Corruption Vulnerability

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge HTML-based. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who...

chakra: Crash in Js::DynamicProfileInfo::RecordCallSiteInfo

Project: https://github.com/Microsoft/ChakraCore.git Detailed report: https://oss-fuzz.com/testcase?key=6634271616794624 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x7fc57939b0da Crash State:...

Microsoft Windows Edge and Microsoft ChakraCore Remote Code Execution Vulnerability (CNVD-2018-00326)

Microsoft Windows 10 and Windows Server 2016 are both products of the American company Microsoft. The former is a set of operating systems for personal computers, and the latter is a set of server operating systems.Edge is the default browser that comes with one of these systems.ChakraCore is the...

Microsoft Windows Edge and Internet Explorer Remote Code Execution Vulnerability (CNVD-2018-00788)

Microsoft Windows is an operating system released by Microsoft Corporation in the U.S. Edge and Internet Explorer IE are among the browsers. The former is the default browser that comes with the latest operating system, Windows 10, and the latter is the default browser that comes with operating...

Microsoft Windows Edge and Microsoft ChakraCore Remote Code Execution Vulnerability

Microsoft Windows 10 and Windows Server 2016 are both products of the American company Microsoft. The former is a set of operating systems for personal computers, and the latter is a set of server operating systems.Edge is the default browser that comes with one of these systems.ChakraCore is the...

Microsoft Windows Edge and Microsoft ChakraCore (CNVD-2018-00786)

Microsoft Windows 10 and Windows Server 2016 are both products of the American company Microsoft. The former is a set of operating systems for personal computers, and the latter is a set of server operating systems.Edge is the default browser that comes with one of these systems.ChakraCore is the...

Microsoft Windows Edge and Internet Explorer and Microsoft ChakraCore Remote Code Execution Vulnerability

Microsoft Windows 7 SP1 and others are operating systems released by Microsoft Corporation in the U.S. Edge and Internet Explorer IE are among the browsers. The former is the default browser that comes with the latest operating system, Windows 10, and the latter is the default browser that comes...

Microsoft Windows Edge and Microsoft ChakraCore Remote Code Execution Vulnerability (CNVD-2018-00325)

Microsoft Windows 10 and Windows Server 2016 are both products of the American company Microsoft. The former is a set of operating systems for personal computers, and the latter is a set of server operating systems.Edge is the default browser that comes with one of these systems.ChakraCore is the...

CVE-2017-11930

ChakraCore, and Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 R2, Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due t...

CVE-2017-11911

ChakraCore and Windows 10 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from...

CVE-2017-11894

ChakraCore, and Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and and Internet Explorer adn Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to gain the...

CVE-2017-11909

ChakraCore and Windows 10 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from...

chakra: Stack-use-after-scope in char16_t const* PlatformAgnostic::Intl::FormatNumber<double>

Project: https://github.com/Microsoft/ChakraCore.git Detailed report: https://oss-fuzz.com/testcase?key=5972830278647808 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: Stack-use-after-scope READ 3 Crash Address: 0x7f9ca422b8c0 Crash State: char16t const...

Microsoft Edge Chakra CFG Bypass By Overwriting JavaScript Bytecode Vulnerability

Chakra suffers from a CFG bypass by overwriting JavaScript bytecode. Chakra: CFG bypass by overwriting JavaScript bytecode Assume an attacker has the ability to overwrite Chakra's bytecode, either through a read/write primitive or through an overflow type vulnerability. Let's take a look at the...