Microsoft Edge Chakra: JIT - 'Lowerer::LowerBoundCheck' Incorrect Integer Overflow Check

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1343 Here's a snippet of the method. void Lowerer::LowerBoundCheckIR::Instr const instr ... ifrightOpnd-IsIntConstOpnd IntConstType newOffset; if!IntConstMath::Addoffset, rightOpnd-AsIntConstOpnd-GetValue, &newOffset --- a offset...

Microsoft Edge Chakra: JIT - 'OP_Memset' Type Confusion

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1357 function opta, b, v if b.length b0 = ; return 0; ; printb0; main;...

Microsoft Edge Chakra JIT - Type Confusion with switch Statements

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1341&desc=3 Let's start with a switch statement and its IR code for JIT. JS: for let i = 0; i ; 100; i++ switch i case 2: case 4: case 6: case 8: case 10: case 12: case 14: case 16: case 18: case 20: case 22: case 24: case 26: ca...

CVE-2017-11874

Microsoft Edge in Microsoft Windows 10 1703, 1709, Windows Server, version 1709, and ChakraCore allows an attacker to bypass Control Flow Guard CFG to run arbitrary code on a target system, due to how Microsoft Edge handles accessing memory in code compiled by the Edge Just-In-Time JIT compiler,...

CVE-2017-11846

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 Microsoft Edge and Internet Explorer in Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows...

CVE-2017-11841

ChakraCore and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to gain the same user rights as the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption...

CVE-2017-11836

ChakraCore, and Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to take control of an affected system, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption...

CVE-2017-11871

ChakraCore and Microsoft Edge in Windows 10 1703, 1709, and Windows Server, version 1709 allows an attacker to gain the same user rights as the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique fr...

CVE-2017-11840

ChakraCore and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to gain the same user rights as the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption...

CVE-2017-11866

ChakraCore and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to gain the same user rights as the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption...

CVE-2017-11846

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 Microsoft Edge and Internet Explorer in Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows...

chakra: NULL

Detailed report: https://oss-fuzz.com/testcase?key=6459571993313280 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: Null-dereference READ Crash Address: 0x000000000000 Crash State: NULL Sanitizer: address ASAN Reproducer Testcase:...

The vulnerability of the JavaScript script handler ChakraCore in the Microsoft Edge browser allows a hacker to execute arbitrary code.

The vulnerability of the JavaScript script handler ChakraCore in the Microsoft Edge browser is related to improper handling of objects in memory. Exploiting this vulnerability allows a malicious actor to execute arbitrary code in the context of the current user, using a specially crafted web page...

The vulnerability of the JavaScript script handler ChakraCore in the Microsoft Edge browser allows a hacker to execute arbitrary code.

The vulnerability of the JavaScript script handler ChakraCore in the Microsoft Edge browser is related to improper handling of objects in memory. Exploiting this vulnerability allows a malicious actor to execute arbitrary code in the context of the current user, using a specially crafted web page...

chakra: Dynamic-stack-buffer-overflow in Js::JavascriptArray::NewInstance

Project: https://github.com/Microsoft/ChakraCore.git Detailed report: https://oss-fuzz.com/testcase?key=6106023170408448 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: Dynamic-stack-buffer-overflow READ 8 Crash Address: 0x7ffd13bb0260 Crash State:...

chakra: Crash in Memory::RecyclerWriteBarrierManager::WriteBarrier

Detailed report: https://oss-fuzz.com/testcase?key=4792234600824832 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: UNKNOWN WRITE Crash Address: 0x7f1ab4666000 Crash State: Memory::RecyclerWriteBarrierManager::WriteBarrier int...

chakra: Crash in Js::JavascriptObject::CreateKeysHelper

Detailed report: https://oss-fuzz.com/testcase?key=5635112487092224 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x00072005a007 Crash State: Js::JavascriptObject::CreateKeysHelper Js::JavascriptOperators::GetOwnPropertyNames...

chakra: Stack-buffer-overflow in Output::PrintBuffer

Project: https://github.com/Microsoft/ChakraCore.git Detailed report: https://oss-fuzz.com/testcase?key=5319633180557312 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: Stack-buffer-overflow READ Crash Address: 0x7efd1fdab820 Crash State: Output::PrintBuffer...

chakra: Stack-use-after-scope in Js::JavascriptFunction::CallAsConstructor

Project: https://github.com/Microsoft/ChakraCore.git Detailed report: https://oss-fuzz.com/testcase?key=4931873332527104 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: Stack-use-after-scope WRITE 8 Crash Address: 0x7fd69755f220 Crash State:...

chakra: Dynamic-stack-buffer-overflow in js_memcpy_s

Project: https://github.com/Microsoft/ChakraCore.git Detailed report: https://oss-fuzz.com/testcase?key=6280172954189824 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: Dynamic-stack-buffer-overflow READ 16 Crash Address: 0x7ffec5b38060 Crash State: jsmemcpys...