CVE-2024-4949
📋 TL;DR
This vulnerability is a use-after-free memory corruption flaw in Chrome's V8 JavaScript engine. It allows remote attackers to potentially execute arbitrary code or cause denial of service by tricking users into visiting a malicious webpage. All Chrome users prior to version 125.0.6422.60 are affected.
💻 Affected Systems
- Google Chrome
- Chromium-based browsers
📦 What is this software?
Chrome by Google
Google Chrome is the world's most popular web browser, used by over 3 billion users globally across Windows, macOS, Linux, Android, and iOS platforms. As a Chromium-based browser developed by Google, Chrome dominates the browser market with approximately 65% market share, making it a critical compon...
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⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full system compromise, data theft, or ransomware deployment.
Likely Case
Browser crash (denial of service) or limited sandbox escape leading to information disclosure.
If Mitigated
Minimal impact if browser sandboxing holds, potentially just a tab crash.
🎯 Exploit Status
Use-after-free vulnerabilities in V8 are frequently exploited in the wild, but no specific exploit for this CVE has been publicly documented yet.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 125.0.6422.60 and later
Vendor Advisory: https://chromereleases.googleblog.com/2024/05/stable-channel-update-for-desktop_15.html
Restart Required: Yes
Instructions:
1. Open Chrome. 2. Click three-dot menu → Help → About Google Chrome. 3. Chrome will automatically check for and install updates. 4. Click 'Relaunch' to restart Chrome with the patched version.
🔧 Temporary Workarounds
Disable JavaScript
allPrevents exploitation by disabling JavaScript execution, but breaks most website functionality.
Use Chrome sandboxing policies
allEnforce strict site isolation and sandboxing via enterprise policies to limit potential damage.
🧯 If You Can't Patch
- Restrict web browsing to trusted sites only using proxy or firewall rules.
- Implement application whitelisting to prevent unauthorized code execution from browser exploits.
🔍 How to Verify
Check if Vulnerable:
Check Chrome version: if below 125.0.6422.60, you are vulnerable.Check Version:
chrome://version/ (in Chrome address bar) or 'google-chrome --version' on Linux terminalVerify Fix Applied:
Confirm Chrome version is 125.0.6422.60 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with V8-related errors
- Unexpected Chrome process termination in system logs
Network Indicators:
- Unusual outbound connections from Chrome processes
- Traffic to known exploit hosting domains
SIEM Query:
source="chrome_crash_logs" AND (message="V8" OR message="use-after-free") OR process_name="chrome.exe" AND event_type="process_crash"🔗 References
- https://chromereleases.googleblog.com/2024/05/stable-channel-update-for-desktop_15.html
- https://issues.chromium.org/issues/326607001
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6G7EYH2JAK5OJPVNC6AXYQ5K7YGYNCDN/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NTSN22LNYXMWHVTYNOYQVOY7VDZFHENQ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WSUWM73ZCXTN62AT2REYQDD5ZKPFMDZD/
- https://chromereleases.googleblog.com/2024/05/stable-channel-update-for-desktop_15.html
- https://issues.chromium.org/issues/326607001
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6G7EYH2JAK5OJPVNC6AXYQ5K7YGYNCDN/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NTSN22LNYXMWHVTYNOYQVOY7VDZFHENQ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WSUWM73ZCXTN62AT2REYQDD5ZKPFMDZD/
