CVE-2022-4912
📋 TL;DR
This vulnerability is a type confusion flaw in Chrome's MathML implementation that allows a remote attacker to trigger heap corruption via a malicious HTML page. Successful exploitation could lead to arbitrary code execution. All users running vulnerable Chrome versions 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 with the privileges of the Chrome process, potentially leading to full system compromise.
Likely Case
Browser crash (denial of service) or limited code execution within the sandboxed renderer process.
If Mitigated
No impact if Chrome is fully patched or if exploit attempts are blocked by security controls.
🎯 Exploit Status
Exploitation requires user interaction (visiting a malicious page). No public exploit code is known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 105.0.5195.52
Vendor Advisory: https://chromereleases.googleblog.com/2022/08/stable-channel-update-for-desktop_30.html
Restart Required: Yes
Instructions:
1. Open Chrome. 2. Click the three-dot menu → Help → About Google Chrome. 3. Chrome will automatically check for and apply updates. 4. Restart Chrome when prompted.
🔧 Temporary Workarounds
Disable JavaScript
allPrevents execution of malicious scripts that could trigger the vulnerability.
Use browser extensions to block malicious sites
allExtensions like uBlock Origin or NoScript can block potentially malicious content.
🧯 If You Can't Patch
- Restrict access to untrusted websites using network filtering or proxy rules.
- Implement application allowlisting to prevent unauthorized browser execution.
🔍 How to Verify
Check if Vulnerable:
Check Chrome version: if below 105.0.5195.52, it is vulnerable.Check Version:
chrome://version/Verify Fix Applied:
Confirm Chrome version is 105.0.5195.52 or higher.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports
- Unexpected process terminations in system logs
Network Indicators:
- HTTP requests to known malicious domains hosting exploit code
SIEM Query:
source="chrome" AND (event="crash" OR event="process_termination")🔗 References
- https://chromereleases.googleblog.com/2022/08/stable-channel-update-for-desktop_30.html
- https://crbug.com/1350909
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PQKT7EGDD2P3L7S3NXEDDRCPK4NNZNWJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YKLJ3B3D5BCVWE3QNP4N7HHF26OHD567/
- https://chromereleases.googleblog.com/2022/08/stable-channel-update-for-desktop_30.html
- https://crbug.com/1350909
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PQKT7EGDD2P3L7S3NXEDDRCPK4NNZNWJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YKLJ3B3D5BCVWE3QNP4N7HHF26OHD567/
