●Google Chrome · Mai 2024

Bulletin de Sécurité Google Chrome : V8 JIT et WebRTC

Analyse technique de la mise à jour d'urgence du canal stable de Google Chrome résolvant les vulnérabilités du compilateur JIT V8.

Active Zero-Day (V8)

8.8

CVSS Severity

Critical

Browser Exploitation

Immediate

Fleet Patch Urgency

Triage Exécutif et Verdict de Risque

Google has released an emergency security update for Chrome across Windows, Mac, and Linux to patch CVE-2024-4947, an actively exploited type confusion vulnerability in the V8 JavaScript engine. This flaw allows malicious web pages to escape the V8 sandbox and execute arbitrary code in the browser renderer process.

Matrice de Triage des Vulnérabilités

Identifiant CVE	Sous-système / Composant	Impact	CVSS	Exploitation Active ?
`CVE-2024-4947`	V8 JavaScript Engine	JIT Type Confusion	8.8 High	YES (In-The-Wild)
`CVE-2024-4948`	Dawn / WebGPU	Use-After-Free	8.1 High	No
`CVE-2024-4949`	V8 WebAssembly	Out-of-Bounds Memory Access	7.5 High	No
`CVE-2024-4950`	Downloads Subsystem	Inappropriate Implementation	4.3 Medium	No

FEATURED CODE TEARDOWN

Deep Dive: CVE-2024-4947 Chrome V8 Turbofan Type Confusion Teardown →

Examine the exact C++ Git commit from Chromium Gerrit showing how property accessor prototype transitions fooled the Turbofan optimizer.

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