Microsoft Edge Scripting Engine Memory Corruption (CVE-2017-11893)

A remote code execution vulnerability exists in Microsoft Edge. The vulnerability is due to the way the scripting engine handles objects in memory. An attacker could exploit this vulnerability by enticing the target user to open a specially crafted web page...

Microsoft Edge Scripting Engine CVE-2017-11889 Remote Memory Corruption Vulnerability

Description Microsoft Edge is prone to a remote memory-corruption vulnerability. Attackers can exploit this issue to execute arbitrary code in the context of the currently logged-in user. Failed attacks will cause denial of service conditions. Technologies Affected Microsoft ChakraCore Microsoft...

Microsoft Edge Scripting Engine CVE-2017-11910 Remote Memory Corruption Vulnerability

Description Microsoft Edge is prone to a remote memory-corruption vulnerability. Attackers can exploit this issue to execute arbitrary code in the context of the currently logged-in user. Failed attacks will cause denial of service conditions. Technologies Affected Microsoft ChakraCore Microsoft...

Microsoft Edge Scripting Engine Memory Corruption (CVE-2017-11909)

A remote code execution vulnerability exists in Microsoft Edge. The vulnerability is due to the way Microsoft Edge renders when accesses objects in memory. A remote unauthenticated attacker could exploit this vulnerability by enticing the target user to open a specially crafted web page...

KB4053581: Windows 10 December 2017 Security Update

The remote Windows host is missing security update 4053581. It is, therefore, affected by multiple vulnerabilities : - A security feature bypass exists when Device Guard incorrectly validates an untrusted file. An attacker who successfully exploited this vulnerability could make an unsigned file...

Microsoft Edge Chakra CFG Bypass By Overwriting JavaScript Bytecode Vulnerability

Chakra suffers from a CFG bypass by overwriting JavaScript bytecode. Chakra: CFG bypass by overwriting JavaScript bytecode Assume an attacker has the ability to overwrite Chakra's bytecode, either through a read/write primitive or through an overflow type vulnerability. Let's take a look at the...

Microsoft Edge Chakra CFG Bypass With leafInterpreterFrame Vulnerability

Chakra suffers from a CFG bypass with leafInterpreterFrame. Every JavaScript variable in Chakra except a tagged int is a pointer. From this pointer, using an arbitrary read, it is possible to follow a chain of pointers and end up with a pointer to the native stack. This allows disclosing the stac...

Microsoft Edge Chakra CFG Bypass Due To Bug In ServerFreeAllocation Vulnerability

Charka suffers from a CFG bypass due to a bug in ServerFreeAllocation. Chakra: CFG bypass due to a bug in ServerFreeAllocation CVE-2017-11874 Chakra JIT server exposes a ServerFreeAllocation method that can be used to free an existing JIT allocation for example when the corresponding function get...

Microsoft Edge: Chakra: JIT: Incorrect function declaration scope(CVE-2017-11870)

In the following JavaScript code, both of the print calls must print out "undefined" because of "x" is a formal parameter. But the second print call prints out "function x ". This bug may lead to type confusion in JITed code. function fx printx; function x printx; The following code in...

Microsoft Edge: Chakra: JIT: GlobOpt::OptTagChecks must consider IsLoopPrePass properly(CVE-2017-11840)

There's one more place that emits a BailOnNotObject opcode. Here's a snippet of GlobOpt::OptTagChecks. if valueType.CanBeTaggedValue && !valueType.HasBeenNumber && this-IsLoopPrePass || !this-currentBlock-loop ValueType newValueType = valueType.SetCanBeTaggedValuefalse; // Split out the tag check...

Microsoft Edge: Chakra: JIT: Inline::InlineCallApplyTarget_Shared doesn't return the return instruction(CVE-2017-11841)

Here's a snippet of Inline::Optimize. FOREACHINSTREDITINGinstr, instrNext, func-mheadInstr switch instr-mopcode case Js::OpCode::Label: ... if instr-AsLabelInstr-misForInExit Assertthis-currentForInDepth != 0; // The PoC hits this this-currentForInDepth--; break; case...

Microsoft Edge Scripting Engine Memory Corruption (CVE-2017-11839)

A remote code execution Vulnerability exists in Microsoft Edge. The vulnerability is due to the way JavaScript engine renders when handling objects in memory. A remote unauthenticated attacker could exploit this vulnerability by enticing the target user to open a specially crafted web page...

Microsoft Edge Scripting Engine Memory Corruption (CVE-2017-11870)

A remote code execution vulnerability exists in Microsoft Edge. The vulnerability is due to the way the scripting engine handles objects in memory. A remote unauthenticated attacker could exploit this vulnerability by enticing the target user to open a specially crafted web page...

Microsoft Edge Memory Corruption Arbitrary Code Execution (CVE-2017-8751)

A remote code execution vulnerability exists in Microsoft Edge. The vulnerability is due to the way Microsoft Edge handles objects in memory. A remote attacker can exploit this issue by enticing a target victim to open a specially crafted web page...

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

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1365 Some background: https://bugs.chromium.org/p/project-zero/issues/detail?id=1364 There's one more place that emits a BailOnNotObject opcode. Here's a snippet of GlobOpt::OptTagChecks. if valueType.CanBeTaggedValue &&...

Microsoft Edge Chakra JIT - Inline::InlineCallApplyTarget_Shared does not Return the return Instruction

Microsoft Edge Chakra JIT - Inline::InlineCallApplyTargetShared does not Return the return Instruction / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1366 Here's a snippet of Inline::Optimize. FOREACHINSTREDITINGinstr, instrNext, func-mheadInstr switch instr-mopcode case...

Microsoft Edge Chakra JIT - Incorrect Function Declaration Scope

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1367 In the following JavaScript code, both of the print calls must print out "undefined" because of "x" is a formal parameter. But the second print call prints out "function x ". This bug may lead to type confusion in JITed code...

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

Microsoft Edge Chakra JIT - GlobOpt::OptTagChecks Must Consider IsLoopPrePass Properly / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1365 Some background: https://bugs.chromium.org/p/project-zero/issues/detail?id=1364 There's one more place that emits a BailOnNotObject opcod...

Microsoft Edge Chakra JIT - Incorrect Function Declaration Scope

Microsoft Edge Chakra JIT - Incorrect Function Declaration Scope / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1367 In the following JavaScript code, both of the print calls must print out "undefined" because of "x" is a formal parameter. But the second print call prints out...

Microsoft Edge Chakra JIT Incorrect Function Declaration Scope Exploit

Exploit for windows platform in category dos / poc Microsoft Edge: Chakra: JIT: Incorrect function declaration scope CVE-2017-11870 In the following JavaScript code, both of the print calls must print out "undefined" because of "x" is a formal parameter. But the second print call prints out...