CVE-2018-0837

CVE-2018-0837 corresponds to a remote code execution vulnerability in Microsoft Edge and ChakraCore on Windows 10 (Gold, 1511, 1607, 1703, 1709) and Windows Server 2016, arising from how the scripting engine handles objects in memory (Scripting Engine Memory Corruption Vulnerability). Connected a...

CVE-2018-0856

Microsoft Edge and ChakraCore in Microsoft Windows 10 1703 and 1709 allows remote code execution, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-083...

CVE-2018-0857

ChakraCore/Edge memory-corruption RCE chain is described in the connected advisories: ChakraCore on Microsoft Edge and ChakraCore components within Windows 10 (various builds) is vulnerable when the scripting engine mishandles in-memory objects, enabling remote code execution. The exact affected ...

CVE-2018-0771

Microsoft Edge in Microsoft Windows 10 1607, 1703, and Windows Server 2016 allows a security feature bypass, due to how Edge handles different-origin requests, aka "Microsoft Edge Security Feature Bypass"...

CVE-2018-0859

The CVE-2018-0859 entry concerns a remote code execution vulnerability in Microsoft Edge and ChakraCore on Windows 10 (Gold, 1511, 1607, 1703, 1709) and Windows Server 2016, caused by how the scripting engine handles objects in memory (Scripting Engine Memory Corruption). Connected advisories (GH...

EUVD-2018-1573

Microsoft Edge in Microsoft Windows 10 1703 and 1709 allows information disclosure, due to how Edge handles objects in memory, aka "Microsoft Edge Information Disclosure Vulnerability". This CVE ID is unique from CVE-2018-0839...

CVE-2018-0840

Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Internet Explorer and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows remote code execution, due to how the scripting...

CVE-2018-0763

Microsoft Edge in Microsoft Windows 10 1703 and 1709 allows information disclosure, due to how Edge handles objects in memory, aka "Microsoft Edge Information Disclosure Vulnerability". This CVE ID is unique from CVE-2018-0839...

CVE-2018-0836

The CVE-2018-0836 entry concerns Microsoft Edge and ChakraCore in Windows 10 (1703/1709) where remote code execution is possible due to how the scripting engine handles objects in memory (Scripting Engine Memory Corruption). Connected advisories (GHSA) corroborate a ChakraCore RCE vulnerability a...

EUVD-2018-1639

Microsoft Edge in Microsoft Windows 10 1703 allows information disclosure, due to how Edge handles objects in memory, aka "Microsoft Edge Information Disclosure Vulnerability". This CVE ID is unique from CVE-2018-0763...

CVE-2018-0836

Microsoft Edge and ChakraCore in Microsoft Windows 10 1703 and 1709 allows remote code execution, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0834, CVE-2018-0835, CVE-2018-0837, CVE-2018-083...

Microsoft Edge Chakra JIT - ImplicitCallFlags Checks Bypass

Microsoft Edge Chakra JIT - ImplicitCallFlags Checks Bypass / Here's a snippet of ExecuteImplicitCall which is responsible for updating the ImplicitCallFlags flag. template inline Js::Var ExecuteImplicitCallJs::RecyclableObject function, Js::ImplicitCallFlags flags, Fn implicitCall...

Microsoft Edge Chakra JIT LdThis Type Confusion

Microsoft Edge: Chakra: JIT: LdThis type confusion CVE-2018-0837 LdThis instructions' value type is assumed to be "Object". Since "this" can be other objects like an array, it has to be assumed to be "LikelyObject", otherwise, operations to "this" will not be checked properly. PoC: function optar...

Microsoft Edge Chakra JIT - NewScObjectNoCtor Array Type Confusion Exploit

Exploit for windows platform in category dos / poc / This is similar to the previous issues 1457, 1459 MSRC 42551, MSRC 42552. If a JavaScript function is used as a consturctor, it sets the new object's "proto" to its "prototype". The JIT compiler uses NewScObjectNoCtor instructions to perform it...

Microsoft Edge Chakra JIT Array.prototype.reverse Array Type Confusion

Microsoft Edge: Chakra: JIT: Array type confusion via Array.prototype.reverse CVE-2018-0835 This is simillar to the previous issue 1457. But this time, we use Array.prototype.reverse. Array.prototype.reverse can be inlineed and may invoke EnsureNonNativeArray to convert the prototype of "this" to...

Microsoft Edge Chakra JIT - GlobOpt::OptTagChecks Must Consider IsLoopPrePass Properly (2)

Microsoft Edge Chakra JIT - GlobOpt::OptTagChecks Must Consider IsLoopPrePass Properly 2 It seems this is the patch for the bug. https://github.com/Microsoft/ChakraCore/pull/4226/commits/874551dd00ff6f404e593c7e0162efb54b953f5a The following two cases will bypass the fix. 1: function opt let obj ...

Microsoft Edge Chakra JIT - Array.prototype.reverse Array Type Confusion Exploit

Exploit for windows platform in category dos / poc / This is simillar to the previous issue 1457. But this time, we use Array.prototype.reverse. Array.prototype.reverse can be inlined and may invoke EnsureNonNativeArray to convert the prototype of "this" to a Var array. Call flow:...

Microsoft Edge Chakra JIT - ImplicitCallFlags Checks Bypass

/ Here's a snippet of ExecuteImplicitCall which is responsible for updating the ImplicitCallFlags flag. template inline Js::Var ExecuteImplicitCallJs::RecyclableObject function, Js::ImplicitCallFlags flags, Fn implicitCall ... Js::ImplicitCallFlags saveImplicitCallFlags = this-GetImplicitCallFlag...

Microsoft Edge Chakra JIT - 'GlobOpt::OptTagChecks' Must Consider IsLoopPrePass Properly (2)

It seems this is the patch for the bug. https://github.com/Microsoft/ChakraCore/pull/4226/commits/874551dd00ff6f404e593c7e0162efb54b953f5a The following two cases will bypass the fix. 1: function opt let obj = new Number2.3023e-320; for let i = 0; i 1; i++ obj.x = 1; obj = +obj; obj.x = 1; functi...

Microsoft Edge Chakra JIT - NewScObjectNoCtor Array Type Confusion

Microsoft Edge Chakra JIT - NewScObjectNoCtor Array Type Confusion / This is similar to the previous issues 1457, 1459 MSRC 42551, MSRC 42552. If a JavaScript function is used as a consturctor, it sets the new object's "proto" to its "prototype". The JIT compiler uses NewScObjectNoCtor instructio...