7.5

CVSS Score

3.0

-

CVSS Score

Basic Information

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CVE-2018-0934

CVE-2018-0934: ChakraCore RCE Vulnerability

ChakraCore and Microsoft Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows remote code execution, due to how the Chakra scripting engine handles objects in memory, aka "Chakra Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0872, CVE-2018-0873, CVE-2018-0874, CVE-2018-0930, CVE-2018-0931, CVE-2018-0933, CVE-2018-0936, and CVE-2018-0937.

(GitHub Advisory)

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CVE-2018-0934

CVE-2018-0934:

7.5

CVSS Score

3.0

-

CVSS Score

Basic Information

Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
Microsoft.ChakraCore	nuget	< 1.8.2	1.8.2

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from improper handling of stack-to-heap transitions during JIT bailout. Key issues were:

RestoreFrames/Restore functions passed 'deepCopy=false' during bailout, allowing stack-based arrays to be cached.
BoxStackInstance's caching logic didn't differentiate between shallow/deep copies, enabling reuse of invalidated deep copies. The commit fixes these by:

Replacing 'deepCopy' with 'boxValues' in frame restoration
Avoiding caching when doing deep copies
Ensuring proper boxing during bailout paths These changes directly correlate to the CWE-787 (out-of-bounds write) described in the vulnerability.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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7.5

-

Basic Information

Basic Information

Concerned about an active attack path?

CVE-2018-0934: ChakraCore RCE Vulnerability

CVE-2018-0934:

7.5

-

Basic Information

Basic Information

Technical Details

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability IntelligenceMiggo AI

7.5

7.5

Technical Details

CVE-2018-0934: ChakraCore RCE Vulnerability

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Basic Information

Basic Information

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI