chakra: Crash in libgcc_s.so.1

Project: https://github.com/Microsoft/ChakraCore.git Detailed report: https://oss-fuzz.com/testcase?key=5713014413066240 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x7f863863e000 Crash State: libgccs.so.1...

Microsoft Chakra typeof Operator Type Confusion 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 the handling of...

Microsoft Edge Chakra - EntrySimpleObjectSlotGetter Type Confusion

Microsoft Edge Chakra - EntrySimpleObjectSlotGetter Type Confusion / function optw, arr arr0 = 1.1; let res = w.event; arr0 = 2.3023e-320; return res; let arr = 1.1; for let i = 0; i ::EntrySimpleObjectSlotGetter 00007fffd5cf3d50 // w.event 000001a880001235 48ffd0 call rax 000001a880001238...

Microsoft Edge Chakra EntrySimpleObjectSlotGetter Type Confusion Exploit

Microsoft Edge Chakra suffers from an issue where EntrySimpleObjectSlotGetter can have side effects that cause a type confusion vulnerability. Microsoft Edge: Chakra: EntrySimpleObjectSlotGetter can have side effects CVE-2018-8133 function optw, arr arr0 = 1.1; let res = w.event; arr0 =...

Microsoft Edge Chakra EntrySimpleObjectSlotGetter Type Confusion

Microsoft Edge: Chakra: EntrySimpleObjectSlotGetter can have side effects CVE-2018-8133 function optw, arr arr0 = 1.1; let res = w.event; arr0 = 2.3023e-320; return res; let arr = 1.1; for let i = 0; i ::EntrySimpleObjectSlotGetter 00007fffd5cf3d50 // w.event 000001a880001235 48ffd0 call rax...

Microsoft Edge Chakra - EntrySimpleObjectSlotGetter Type Confusion

/ function optw, arr arr0 = 1.1; let res = w.event; arr0 = 2.3023e-320; return res; let arr = 1.1; for let i = 0; i ::EntrySimpleObjectSlotGetter 00007fffd5cf3d50 // w.event 000001a880001235 48ffd0 call rax 000001a880001238 488b8e30bdf0ff mov rcx,qword ptr rsi-0F42D0h 000001a88000123f f2480f10415...

chakra: Crash in Js::RegexHelper::StringReplace

Project: https://github.com/Microsoft/ChakraCore.git Detailed report: https://oss-fuzz.com/testcase?key=6004443454636032 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x7f9829583cc0 Crash State: Js::RegexHelper::StringReplace...

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, you will see an exception saying "Can't execute code...

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...

Microsoft Edge Chakra JIT - Magic Value Type Confusion Exploit

Exploit for windows platform in category dos / poc / BOOL JavascriptNativeFloatArray::SetItemuint32 index, double dValue if uint64&dValue == uint64&JavascriptNativeFloatArray::MissingItem JavascriptArray varArr = JavascriptNativeFloatArray::ToVarArraythis; varArr-DirectSetItemAtindex,...

Microsoft Edge Chakra JIT - Magic Value Type Confusion

/ BOOL JavascriptNativeFloatArray::SetItemuint32 index, double dValue if uint64&dValue == uint64&JavascriptNativeFloatArray::MissingItem JavascriptArray varArr = JavascriptNativeFloatArray::ToVarArraythis; varArr-DirectSetItemAtindex, JavascriptNumber::ToVarNoCheckdValue, GetScriptContext; return...

Microsoft Edge Chakra JIT - Magic Value Type Confusion

Microsoft Edge Chakra JIT - Magic Value Type Confusion / BOOL JavascriptNativeFloatArray::SetItemuint32 index, double dValue if uint64&dValue == uint64&JavascriptNativeFloatArray::MissingItem JavascriptArray varArr = JavascriptNativeFloatArray::ToVarArraythis; varArr-DirectSetItemAtindex,...

chakra: Crash in void* Js::JavascriptArray::EveryObjectHelper<unsigned int>

Project: https://github.com/Microsoft/ChakraCore.git Detailed report: https://oss-fuzz.com/testcase?key=5978651605598208 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x7fff81af3470 Crash State: void...

Microsoft Edge Chakra JIT Bounce Check Elimination Bug

Microsoft Edge: Chakra: JIT: A bound check elimination bug CVE-2018-0980 Chakra uses the InvariantBlockBackwardIterator class to backpropagate the information about the hoisted bound checks. But the class follows the linked list instaed of the control flow. This may lead to incorrectly remove the...

Microsoft Edge Chakra JIT - Bound Check Elimination Bug

Microsoft Edge Chakra JIT - Bound Check Elimination Bug / Chakra uses the InvariantBlockBackwardIterator class to backpropagate the information about the hoisted bound checks. But the class follows the linked list instaed of the control flow. This may lead to incorrectly remove the bound checks. ...

Microsoft Edge Chakra JIT - Bound Check Elimination Bug

/ Chakra uses the InvariantBlockBackwardIterator class to backpropagate the information about the hoisted bound checks. But the class follows the linked list instaed of the control flow. This may lead to incorrectly remove the bound checks. In the following code, currentBlock's block number is 4...

Microsoft Edge Chakra JIT - Bound Check Elimination Bug Exploit

Exploit for windows platform in category dos / poc / Chakra uses the InvariantBlockBackwardIterator class to backpropagate the information about the hoisted bound checks. But the class follows the linked list instaed of the control flow. This may lead to incorrectly remove the bound checks. In th...

CVE-2018-8177

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore. This CVE ID is unique from CVE-2018-0943, CVE-2018-8130, CVE-2018-8133,...

CVE-2018-8177

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore. This CVE ID is unique from CVE-2018-0943, CVE-2018-8130, CVE-2018-8133,...

CVE-2018-8145

An information disclosure vulnerability exists when Chakra improperly discloses the contents of its memory, which could provide an attacker with information to further compromise the user's computer or data, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore,...