CVE-2023-2033
📋 TL;DR
This vulnerability is a type confusion flaw in Chrome's V8 JavaScript engine that could allow a remote attacker to execute arbitrary code or cause heap corruption by tricking a user into visiting a malicious webpage. It affects all users running vulnerable versions of Google Chrome or Chromium-based browsers. The severity is high due to the potential for remote code execution.
💻 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...
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⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full system compromise, data theft, or malware installation on the victim's device.
Likely Case
Browser crash or denial of service, with potential for limited code execution in sandboxed contexts.
If Mitigated
No impact if the browser is updated to the patched version or if exploit attempts are blocked by security controls.
🎯 Exploit Status
Exploitation requires crafting a malicious HTML page; no authentication is needed, but user interaction (visiting the page) is typically required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 112.0.5615.121
Vendor Advisory: https://chromereleases.googleblog.com/2023/04/stable-channel-update-for-desktop_14.html
Restart Required: Yes
Instructions:
1. Open Google Chrome. 2. Click the three-dot menu in the top-right corner. 3. Go to 'Help' > 'About Google Chrome'. 4. Chrome will automatically check for updates and prompt to relaunch if an update is available. 5. Restart Chrome to apply the update.
🔧 Temporary Workarounds
Disable JavaScript
allPrevents exploitation by disabling JavaScript execution in the browser, but may break website functionality.
Use Browser Sandboxing
allRun Chrome in a sandboxed environment to limit the impact of potential exploitation.
🧯 If You Can't Patch
- Restrict access to untrusted websites using web filtering or firewall rules.
- Implement application whitelisting to block unauthorized code execution from browser exploits.
🔍 How to Verify
Check if Vulnerable:
Check the Chrome version by going to 'chrome://settings/help' or 'About Google Chrome' in the menu; if version is below 112.0.5615.121, it is vulnerable.Check Version:
On command line: google-chrome --version (Linux) or 'C:\Program Files\Google\Chrome\Application\chrome.exe' --version (Windows)Verify Fix Applied:
After updating, verify the version is 112.0.5615.121 or higher using the same method.📡 Detection & Monitoring
Log Indicators:
- Browser crash logs with V8-related errors
- Unusual process spawns from Chrome in system logs
Network Indicators:
- HTTP requests to known malicious domains hosting exploit code
- Unusual outbound connections from Chrome
SIEM Query:
Example: source="chrome_logs" AND (event="crash" OR error="V8")🔗 References
- https://chromereleases.googleblog.com/2023/04/stable-channel-update-for-desktop_14.html
- https://crbug.com/1432210
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4AOSGAOPXLBK4A5ZRTVZ4M6QKVLSWMWG/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ES2CDRHR2Y4WY6DNDIAPYZFXJU3ZBFAV/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FEJZMAUB4XP44HSHEBDWEKFGA7DUHY42/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHHD6KNH4WLUE6JG6HRQZWNAJMHJ32X7/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RJQI63HWZFL6M26Q6UOHKDY6LD2PFC5Z/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SLO7BL2MHZYPY6O3OAEAQL3SKYMGGO6M/
- https://security.gentoo.org/glsa/202309-17
- https://www.couchbase.com/alerts/
- https://www.debian.org/security/2023/dsa-5390
- https://chromereleases.googleblog.com/2023/04/stable-channel-update-for-desktop_14.html
- https://crbug.com/1432210
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4AOSGAOPXLBK4A5ZRTVZ4M6QKVLSWMWG/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ES2CDRHR2Y4WY6DNDIAPYZFXJU3ZBFAV/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FEJZMAUB4XP44HSHEBDWEKFGA7DUHY42/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHHD6KNH4WLUE6JG6HRQZWNAJMHJ32X7/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RJQI63HWZFL6M26Q6UOHKDY6LD2PFC5Z/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SLO7BL2MHZYPY6O3OAEAQL3SKYMGGO6M/
- https://security.gentoo.org/glsa/202309-17
- https://www.couchbase.com/alerts/
- https://www.debian.org/security/2023/dsa-5390
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2033
