Microsoft Edge Chakra JIT - InlineArrayPush Type Confusion Exploit

Exploit for windows platform in category dos / poc / This is similar to issue 1531 . The patch seems to prevent type confusion triggered from StElemIA instructions. But the SetItem method can also be invoked through the Array.prototype.push method which can be inlineed. We can achieve type...

Microsoft Edge Chakra InitializeNumberFormat / InitializeDateTimeFormat Type Confusion

Microsoft Edge: Chakra: Bugs in InitializeNumberFormat and InitializeDateTimeFormat CVE-2018-8298 The InitializeNumberFormat function in Intl.js is used to initialize an Intl.NumberFormat object, and InitializeDateTimeFormat is used for an Intl.DateTimeFormat object. There are two versions of eac...

Microsoft Edge Chakra JIT - InlineArrayPush Type Confusion

Microsoft Edge Chakra JIT - InlineArrayPush Type Confusion / This is similar to issue 1531 . The patch seems to prevent type confusion triggered from StElemIA instructions. But the SetItem method can also be invoked through the Array.prototype.push method which can be inlineed. We can achieve typ...

Microsoft Edge Chakra JIT - Parameter Scope Parsing Type Confusion

// PoC: async function triggera = class b await 1 let spray = ; for let i = 0; i 0016 SetHomeObj R13 R14 001b NewScObjectSimple R9 001d ProfiledStFld R9.value = R2 1 0021 ProfiledStFld R9.done = R4 2 0025 Yield R9 R9 0037 InitClassMemberComputedName R14R15...

Microsoft Edge Chakra JIT - ImplicitCallFlags Check Bypass with Intl

Microsoft Edge Chakra JIT - ImplicitCallFlags Check Bypass with Intl / If the Intl object hasn't been initialized, access to any property of it will trigger the initialization process which will run Intl.js. The problem is that it runs Intl.js without caring about the ImplicitCallFlags flag. In t...

Microsoft Edge Chakra JIT - InitializeNumberFormat and InitializeDateTimeFormat Type Confusion Explo

Exploit for windows platform in category dos / poc / The InitializeNumberFormat function in Intl.js is used to initialize an Intl.NumberFormat object, and InitializeDateTimeFormat is used for an Intl.DateTimeFormat object. There are two versions of each initializer. One is for WinGlob and the oth...

Microsoft Edge Chakra JIT - ImplicitCallFlags Check Bypass with Intl Exploit

Exploit for windows platform in category dos / poc / If the Intl object hasn't been initialized, access to any property of it will trigger the initialization process which will run Intl.js. The problem is that it runs Intl.js without caring about the ImplicitCallFlags flag. In the PoC, it redefin...

Microsoft Edge Chakra JIT InlineArrayPush Type Confusion

Microsoft Edge: Chakra: JIT: Type confusion with InlineArrayPush This is similar to issue 1531 . The patch seems to prevent type confusion triggered from StElemIA instructions. But the SetItem method can also be invoked through the Array.prototype.push method which can be inlineed. We can achieve...

Microsoft Edge Chakra JIT - 'InlineArrayPush' Type Confusion

/ This is similar to issue 1531 . The patch seems to prevent type confusion triggered from StElemIA instructions. But the SetItem method can also be invoked through the Array.prototype.push method which can be inlineed. We can achieve type confusion with the push method in the same way used for...

Microsoft Edge Chakra JIT - 'DictionaryPropertyDescriptor::CopyFrom' Type Confusion

/ Here's the method. template template void DictionaryPropertyDescriptor::CopyFromDictionaryPropertyDescriptor& descriptor this-Attributes = descriptor.Attributes; this-Data = descriptor.Data == DictionaryPropertyDescriptor::NoSlots ? NoSlots : descriptor.Data; this-Getter = descriptor.Getter ==...

Microsoft Edge Chakra JIT - Parameter Scope Parsing Type Confusion

Microsoft Edge Chakra JIT - Parameter Scope Parsing Type Confusion // PoC: async function triggera = class b await 1 let spray = ; for let i = 0; i 0016 SetHomeObj R13 R14 001b NewScObjectSimple R9 001d ProfiledStFld R9.value = R2 1 0021 ProfiledStFld R9.done = R4 2 0025 Yield R9 R9...

Microsoft Edge Chakra JIT ImplicitCallFlags Check Bypass

Microsoft Edge: Chakra: JIT: ImplicitCallFlags check bypass with Intl CVE-2018-8288 If the Intl object hasn't been initialized, access to any property of it will trigger the initialization process which will run Intl.js. The problem is that it runs Intl.js without caring about the ImplicitCallFla...

Microsoft Edge Chakra Parameter Scope Parsing Bug

Microsoft Edge: Chakra: Parameter scope parsing bug CVE-2018-8279 PoC: async function triggera = class b await 1 let spray = ; for let i = 0; i 0016 SetHomeObj R13 R14 001b NewScObjectSimple R9 001d ProfiledStFld R9.value = R2 1 0021 ProfiledStFld R9.done = R4 2 0025 Yield R9 R9 0037...

Microsoft Edge Chakra JIT - ImplicitCallFlags Check Bypass with Intl

/ If the Intl object hasn't been initialized, access to any property of it will trigger the initialization process which will run Intl.js. The problem is that it runs Intl.js without caring about the ImplicitCallFlags flag. In the PoC, it redefines Map.prototype.get to intercept the execution of...

Microsoft Edge Chakra JIT - InitializeNumberFormat and InitializeDateTimeFormat Type Confusion

/ The InitializeNumberFormat function in Intl.js is used to initialize an Intl.NumberFormat object, and InitializeDateTimeFormat is used for an Intl.DateTimeFormat object. There are two versions of each initializer. One is for WinGlob and the other is for ICU. The problem is that the versions for...

CVE-2018-8384

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-2018-8266, CVE-2018-8380, CVE-2018-8381...

CVE-2018-8381

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 Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8266, CVE-2018-8380,...

CVE-2018-8380

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 Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8266, CVE-2018-8381,...

CVE-2018-8380

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 Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8266, CVE-2018-8381,...

CVE-2018-8384

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-2018-8266, CVE-2018-8380, CVE-2018-8381...