CVE-2023-3422
📋 TL;DR
This is a use-after-free vulnerability in Google Chrome's Guest View component that allows heap corruption. Attackers can exploit it by convincing users to install a malicious extension and visit a crafted HTML page. All Chrome users prior to version 114.0.5735.198 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
Full system compromise through arbitrary code execution, potentially leading to data theft, ransomware deployment, or complete system control.
Likely Case
Browser compromise allowing session hijacking, credential theft, and installation of additional malware through the user's browser context.
If Mitigated
Limited impact with proper extension controls and updated browsers, potentially only browser crash or denial of service.
🎯 Exploit Status
Requires social engineering to install malicious extension plus crafted HTML page. No public exploit code available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 114.0.5735.198 and later
Vendor Advisory: https://chromereleases.googleblog.com/2023/06/stable-channel-update-for-desktop_26.html
Restart Required: Yes
Instructions:
1. Open Chrome menu > Help > About Google Chrome. 2. Chrome will automatically check for updates. 3. If update available, click 'Update Google Chrome'. 4. Restart Chrome when prompted.
🔧 Temporary Workarounds
Disable Guest View
allDisable the Guest View feature via Chrome flags
chrome://flags/#enable-guest-view
Set to 'Disabled'
Restrict Extension Installation
allConfigure Chrome to block extension installation from unknown sources
chrome://extensions/
Enable 'Developer mode' toggle
Configure extension settings
🧯 If You Can't Patch
- Implement application allowlisting to prevent unauthorized extension installation
- Deploy network filtering to block malicious HTML pages and restrict browser internet access
🔍 How to Verify
Check if Vulnerable:
Check Chrome version via chrome://settings/help or 'About Google Chrome' in menuCheck Version:
google-chrome --version (Linux) or check via chrome://settings/helpVerify Fix Applied:
Confirm Chrome version is 114.0.5735.198 or higher📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with memory corruption signatures
- Unexpected extension installation events
- Guest View process termination errors
Network Indicators:
- Requests to known malicious domains hosting crafted HTML
- Unusual extension update traffic
SIEM Query:
source="chrome" AND (event="crash" OR event="extension_install") AND version<"114.0.5735.198"🔗 References
- https://chromereleases.googleblog.com/2023/06/stable-channel-update-for-desktop_26.html
- https://crbug.com/1450397
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KREKCQTJDVI2AEBG5ECZPSOQXIC2L5XL/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBAHED5YFJPRGSEKNZIYHZBGSVHGEHOH/
- https://security.gentoo.org/glsa/202401-34
- https://www.debian.org/security/2023/dsa-5440
- https://chromereleases.googleblog.com/2023/06/stable-channel-update-for-desktop_26.html
- https://crbug.com/1450397
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KREKCQTJDVI2AEBG5ECZPSOQXIC2L5XL/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBAHED5YFJPRGSEKNZIYHZBGSVHGEHOH/
- https://security.gentoo.org/glsa/202401-34
- https://www.debian.org/security/2023/dsa-5440
