CVE-2024-7533
📋 TL;DR
This is a use-after-free vulnerability in Google Chrome's sharing functionality on iOS that allows remote attackers to potentially exploit heap corruption. Attackers can trigger this vulnerability by tricking users into visiting a malicious HTML page. Only iOS users running vulnerable Chrome versions are affected.
💻 Affected Systems
- Google Chrome for iOS
📦 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...
Learn more about Chrome →⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, data theft, and persistent access to the iOS device.
Likely Case
Application crash leading to denial of service, with potential for limited data exposure or sandbox escape depending on exploit sophistication.
If Mitigated
No impact if Chrome is updated to patched version or if users avoid untrusted websites.
🎯 Exploit Status
Exploitation requires heap manipulation techniques but is remotely triggerable via web content.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 127.0.6533.99 and later
Vendor Advisory: https://chromereleases.googleblog.com/2024/08/stable-channel-update-for-desktop.html
Restart Required: Yes
Instructions:
1. Open the App Store on iOS. 2. Tap your profile icon. 3. Scroll to find Chrome updates. 4. Tap 'Update' next to Chrome. 5. Restart Chrome after update completes.
🔧 Temporary Workarounds
Disable JavaScript
allPrevents exploitation by disabling JavaScript execution in Chrome
Settings → Site Settings → JavaScript → Blocked
Use Alternative Browser
allSwitch to Safari or another browser until Chrome is updated
🧯 If You Can't Patch
- Restrict access to untrusted websites and implement web filtering
- Enable iOS device management policies to control browser usage
🔍 How to Verify
Check if Vulnerable:
Open Chrome → Settings → About Chrome → Check version numberCheck Version:
Not applicable for iOS - check via app settingsVerify Fix Applied:
Verify Chrome version is 127.0.6533.99 or higher in Settings → About Chrome📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports
- Memory access violation logs
- Unexpected process termination
Network Indicators:
- Requests to known malicious domains hosting exploit code
- Unusual outbound connections after visiting web pages
SIEM Query:
source="chrome_crash_reports" AND version<"127.0.6533.99" AND process="Chrome"