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The CVE-2024-0519 vulnerability is a type confusion issue within the V8 JavaScript engine’s just-in-time (JIT) compiler. During compilation, TurboFan fails to properly validate the type of an object before optimization passes. An attacker can craft JavaScript code that triggers an inlining optimization for a function, passing an object of an unexpected type. This corrupts the compiler’s type system, leading to the creation of optimized code that performs dangerous machine-level operations on the wrong type of memory pointer. This memory corruption can be leveraged to achieve remote code execution within the context of the browser’s renderer sandbox.
Platform: Google Chromium
Version: prior to 121.0.6167.85
Vulnerability: Type Confusion
Severity: High
date: 2024-01-16
Prediction: 2024-01-24
What Undercode Say:
`git clone https://chromium.googlesource.com/chromium/src.git`
`grep -r “Map::FindField” –include=”.cc” src/v8/</h2>
<h2 style="color: blue;">./v8/tools/turbolizer.py pipeline.cfg`
<h2 style="color: blue;">
How Exploit:
Crafted JavaScript triggers optimization.
Exploits incorrect type assumptions.
Leads to memory corruption.
Bypasses sandbox for RCE.
Protection from this CVE:
Update Chrome/Chromium.
Apply vendor patch.
Enable auto-updates.
Impact:
Remote Code Execution.
Sandbox Escape.
Compromised system integrity.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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