CVE-2022-1308
📋 TL;DR
This is a use-after-free vulnerability in Chrome's Back/Forward Cache (BFCache) that allows remote attackers to potentially exploit heap corruption. Attackers can trigger this by getting users to visit a specially crafted HTML page, potentially leading to arbitrary code execution. All users running vulnerable versions of Google Chrome 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 if combined with privilege escalation vulnerabilities.
Likely Case
Browser crash (denial of service) or limited information disclosure from memory corruption.
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) and bypassing Chrome's sandbox for full impact.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 100.0.4896.88 and later
Vendor Advisory: https://chromereleases.googleblog.com/2022/04/stable-channel-update-for-desktop_11.html
Restart Required: Yes
Instructions:
1. Open Chrome. 2. Click the three-dot menu → Help → About Google Chrome. 3. Chrome will automatically check for updates and install version 100.0.4896.88 or later. 4. Click 'Relaunch' to restart Chrome.
🔧 Temporary Workarounds
Disable BFCache via enterprise policy
allDisables the Back/Forward Cache feature to prevent exploitation of this vulnerability.
Set Chrome policy 'BackForwardCacheEnabled' to false
Use browser isolation
allDeploy browser isolation solutions to render web content in isolated environments.
🧯 If You Can't Patch
- Restrict access to untrusted websites using web filtering or proxy controls
- Implement application allowlisting to prevent execution of malicious code
🔍 How to Verify
Check if Vulnerable:
Check Chrome version: If version is less than 100.0.4896.88, the system is vulnerable.Check Version:
chrome://version/ or 'google-chrome --version' on Linux/macOSVerify Fix Applied:
Confirm Chrome version is 100.0.4896.88 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with memory corruption signatures
- Unexpected process termination of chrome.exe
Network Indicators:
- Requests to known malicious domains hosting exploit code
- Unusual outbound connections from Chrome processes
SIEM Query:
source="chrome" AND (event_type="crash" OR message="*heap corruption*" OR message="*use-after-free*")🔗 References
- https://chromereleases.googleblog.com/2022/04/stable-channel-update-for-desktop_11.html
- https://crbug.com/1283050
- https://security.gentoo.org/glsa/202208-25
- https://chromereleases.googleblog.com/2022/04/stable-channel-update-for-desktop_11.html
- https://crbug.com/1283050
- https://security.gentoo.org/glsa/202208-25
