CVE-2023-3732
📋 TL;DR
This vulnerability allows out-of-bounds memory access in Chrome's Mojo IPC system, enabling a remote attacker who has compromised the renderer process to potentially exploit heap corruption. Attackers could execute arbitrary code or cause crashes by tricking users into visiting a malicious HTML page. All users of affected Chrome versions are at risk.
💻 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 ransomware deployment
Likely Case
Browser crash or sandbox escape allowing limited code execution within browser context
If Mitigated
Browser crash with no further impact if sandboxing holds
🎯 Exploit Status
Exploit requires chaining with another vulnerability to compromise renderer process first. Technical details available in public references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 115.0.5790.98 and later
Vendor Advisory: https://chromereleases.googleblog.com/2023/07/stable-channel-update-for-desktop.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.
🔧 Temporary Workarounds
Disable JavaScript
allPrevents malicious HTML pages from executing exploit code
chrome://settings/content/javascript → Block
Use Site Isolation
allEnhances sandboxing between websites
chrome://flags/#site-isolation-trial-opt-out → Disabled
🧯 If You Can't Patch
- Use alternative browser temporarily
- Implement network filtering to block malicious sites
🔍 How to Verify
Check if Vulnerable:
Check Chrome version in About Google Chrome pageCheck Version:
google-chrome --version (Linux) or chrome://versionVerify Fix Applied:
Confirm version is 115.0.5790.98 or higher📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports
- Renderer process termination events
Network Indicators:
- Requests to known exploit hosting domains
SIEM Query:
source="chrome" AND (event="crash" OR process="chrome_renderer")🔗 References
- http://packetstormsecurity.com/files/174223/Chrome-IPCZ-FragmentDescriptors-Missing-Validation.html
- https://chromereleases.googleblog.com/2023/07/stable-channel-update-for-desktop.html
- https://crbug.com/1450899
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PQKT7EGDD2P3L7S3NXEDDRCPK4NNZNWJ/
- https://security.gentoo.org/glsa/202401-34
- http://packetstormsecurity.com/files/174223/Chrome-IPCZ-FragmentDescriptors-Missing-Validation.html
- https://chromereleases.googleblog.com/2023/07/stable-channel-update-for-desktop.html
- https://crbug.com/1450899
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PQKT7EGDD2P3L7S3NXEDDRCPK4NNZNWJ/
- https://security.gentoo.org/glsa/202401-34
