CVE-2023-0703
📋 TL;DR
This vulnerability involves type confusion in Chrome DevTools that could allow heap corruption through specific UI interactions. Attackers could potentially exploit this by tricking users into performing certain actions in DevTools. All Chrome users prior to version 110.0.5481.77 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...
Learn more about Chrome →⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full system compromise, data theft, or malware installation.
Likely Case
Browser crash or instability, with potential for limited data exposure or sandbox escape.
If Mitigated
Minimal impact if Chrome sandboxing works as intended, potentially just a browser crash.
🎯 Exploit Status
Requires social engineering to convince user to perform specific DevTools interactions; not a drive-by exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 110.0.5481.77 and later
Vendor Advisory: https://chromereleases.googleblog.com/2023/02/stable-channel-update-for-desktop.html
Restart Required: Yes
Instructions:
1. Open Chrome settings 2. Click 'About Chrome' 3. Allow Chrome to update automatically 4. Restart Chrome when prompted
🔧 Temporary Workarounds
Disable DevTools
allPrevent access to Chrome DevTools to eliminate attack surface
chrome://flags/#enable-devtools-experiments
Set to Disabled
Restrict DevTools Access
windowsUse group policies to limit who can access DevTools
🧯 If You Can't Patch
- Implement application allowlisting to prevent unauthorized Chrome usage
- Use network segmentation to isolate Chrome instances from sensitive systems
🔍 How to Verify
Check if Vulnerable:
Check Chrome version in settings; if below 110.0.5481.77, system is vulnerableCheck Version:
chrome://version/Verify Fix Applied:
Confirm Chrome version is 110.0.5481.77 or higher📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports
- Unexpected DevTools usage patterns
- Memory access violations in system logs
Network Indicators:
- Unusual outbound connections following Chrome crashes
SIEM Query:
source="chrome_crash_reports" AND version<"110.0.5481.77"🔗 References
- https://chromereleases.googleblog.com/2023/02/stable-channel-update-for-desktop.html
- https://crbug.com/1405574
- https://security.gentoo.org/glsa/202309-17
- https://chromereleases.googleblog.com/2023/02/stable-channel-update-for-desktop.html
- https://crbug.com/1405574
- https://security.gentoo.org/glsa/202309-17
