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The CVE-2024-4761 vulnerability is a critical type confusion issue within the V8 JavaScript engine. Type confusion occurs when code initializes a resource using one type but later accesses it as an incompatible type, bypassing security checks. In V8’s Just-In-Time (JIT) compilation pipeline, an integer overflow flaw in the instruction selector component for x86 architecture specifically during the `ElideTruncate` optimization phase generates incorrect bounds. This miscalculation leads to an out-of-bounds memory write primitive. A remote attacker can exploit this by crafting a malicious HTML page that triggers the flaw during JIT compilation of specially designed JavaScript code, ultimately allowing for arbitrary code execution within the context of the browser renderer process.
Platform: Google Chromium
Version: V8 Engine
Vulnerability: Type Confusion
Severity: Critical
date: 2024-05-15
Prediction: Patch: 2024-05-24
What Undercode Say:
`git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git`
`fetch v8</h2>
<h2 style="color: blue;">cd v8</h2>
<h2 style="color: blue;">git log –oneline –grep=”4761″</h2>
<h2 style="color: blue;">How Exploit:</h2>
<h2 style="color: blue;">Malicious JavaScript triggers JIT.</h2>
<h2 style="color: blue;">ElideTruncate` optimization miscalculates.
<h2 style="color: blue;">
<h2 style="color: blue;">
<h2 style="color: blue;">How Exploit:</h2>
<h2 style="color: blue;">Malicious JavaScript triggers JIT.</h2>
<h2 style="color: blue;">
Out-of-bounds write achieved.
Arbitrary code execution.
Protection from this CVE
Update Chrome/Chromium.
Disable JavaScript.
Use exploit mitigations.
Impact:
Remote Code Execution.
Compromise user system.
Bypass security sandbox.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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