CVE-2024-2174: Google Chrome V8 RCE Vulnerability

CVE-2024-2174 Overview

CVE-2024-2174 is a high-severity vulnerability in the V8 JavaScript engine used by Google Chrome versions prior to 122.0.6261.111. The flaw stems from an inappropriate implementation in V8 that allows a remote attacker to trigger heap corruption through a crafted HTML page. Successful exploitation requires user interaction, such as visiting an attacker-controlled website. The Chromium project rated the security severity as High, and the issue maps to [CWE-787] Out-of-Bounds Write and [CWE-358] Improperly Implemented Security Check for Standard.

Critical Impact

Remote attackers can corrupt heap memory in the renderer process via a malicious web page, enabling potential code execution within the Chrome sandbox boundary.

Affected Products

• Google Chrome versions prior to 122.0.6261.111
• Fedora 40 (chromium package distributed via Fedora Project)
• Chromium-based browsers built on vulnerable upstream V8 code

Discovery Timeline

• 2024-03-06 - CVE-2024-2174 published to the National Vulnerability Database
• 2024-12-19 - Last updated in NVD database

Technical Details for CVE-2024-2174

Vulnerability Analysis

The vulnerability resides in V8, the JavaScript and WebAssembly engine that powers Chrome. V8 performs aggressive runtime optimization, type speculation, and just-in-time (JIT) compilation to execute JavaScript efficiently. When the engine's implementation does not enforce expected invariants on object layout, type, or memory bounds, attacker-controlled JavaScript can manipulate heap-allocated objects into an inconsistent state. The result is heap corruption that the attacker can shape to achieve arbitrary read and write primitives within the renderer process.

Exploitation requires a victim to load a crafted HTML page that delivers the malicious JavaScript payload. Because the bug is reachable from any web origin, drive-by attacks through advertisements, compromised sites, or phishing links are practical delivery vectors. Chrome's renderer sandbox limits direct system impact, but heap corruption in V8 is frequently chained with sandbox escape vulnerabilities to reach full remote code execution.

Root Cause

Google's advisory attributes the issue to an inappropriate implementation in V8. The CWE classification [CWE-787] indicates an out-of-bounds write, while [CWE-358] points to improperly implemented security checks. Together they describe a logic flaw where V8 fails to enforce a required check, allowing a write that overruns its intended buffer or object boundary on the heap.

Attack Vector

The attack vector is the network. An attacker hosts a page containing crafted JavaScript that triggers the V8 bug when rendered by a vulnerable Chrome build. User interaction is limited to navigating to the page. No authentication or prior access is required. Technical details are tracked in the Chromium Issue Tracker Entry and the Google Chrome Update Announcement.

Detection Methods for CVE-2024-2174

Indicators of Compromise

• Chrome renderer process crashes with access violations or heap corruption signatures shortly after loading specific URLs
• Unexpected child processes spawned by chrome.exe following web navigation, including command shells or script interpreters
• Outbound connections from Chrome renderer processes to previously unseen domains hosting heavily obfuscated JavaScript
• Browser telemetry showing Chrome versions older than 122.0.6261.111 still active in the environment

Detection Strategies

• Inventory installed Chrome versions across managed endpoints and flag any build below 122.0.6261.111
• Monitor for renderer process crashes correlated with web browsing activity using endpoint telemetry
• Inspect web proxy and DNS logs for connections to domains delivering obfuscated JavaScript or known exploit kit infrastructure
• Apply behavioral detection rules that alert on browser processes writing executables or launching LOLBins

Monitoring Recommendations

• Collect Chrome version data through software inventory tools and feed it into your vulnerability management workflow
• Forward endpoint process, network, and crash telemetry to a centralized analytics platform for correlation
• Track exploitation indicators against threat intelligence covering V8 n-day exploitation campaigns
• Alert on anomalous parent-child process relationships originating from browser renderer processes

How to Mitigate CVE-2024-2174

Immediate Actions Required

• Update Google Chrome to version 122.0.6261.111 or later on all Windows, macOS, and Linux endpoints
• Update Fedora 40 chromium packages using dnf once the patched build is available per the Fedora Package Announcement
• Restart Chrome after updating to ensure the patched V8 binary is loaded into memory
• Verify the running version through chrome://settings/help or enterprise management tooling

Patch Information

Google released the fix in the Stable Channel update 122.0.6261.111 for Windows, macOS, and Linux, documented in the Google Chrome Update Announcement. Fedora published a corresponding chromium package update for Fedora 40. Enterprise administrators should validate that Chrome auto-update is enabled and not blocked by group policy, or deploy the update through their existing software distribution process.

Workarounds

• Disable JavaScript execution on untrusted sites through Chrome site settings or enterprise policy where operationally feasible
• Restrict browsing to a curated allowlist of business-critical domains until patching completes
• Deploy browser isolation for high-risk users so untrusted content renders in an isolated environment
• Enforce Chrome enterprise update policies via ChromeBrowserUpdater configuration to prevent users from deferring patches

# Verify Chrome version on Linux endpoints
google-chrome --version

# Update chromium on Fedora 40
sudo dnf upgrade --refresh chromium

# Windows: enforce auto-update via registry
reg add "HKLM\SOFTWARE\Policies\Google\Update" /v UpdateDefault /t REG_DWORD /d 1 /f