CVE-2023-2935
📋 TL;DR
This is a type confusion vulnerability in Chrome's V8 JavaScript engine that could allow an attacker to corrupt heap memory. Attackers could exploit this by tricking users into visiting a malicious webpage, potentially leading to remote 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 other vulnerabilities.
Likely Case
Browser crash (denial of service) or limited code execution within the sandboxed Chrome process.
If Mitigated
Browser crash with no further impact if sandboxing holds and no additional vulnerabilities are chained.
🎯 Exploit Status
Exploit requires user interaction (visiting malicious page). Public proof-of-concept exists in Packet Storm reference.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 114.0.5735.90 and later
Vendor Advisory: https://chromereleases.googleblog.com/2023/05/stable-channel-update-for-desktop_30.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 with the patched version.
🔧 Temporary Workarounds
Disable JavaScript
allTemporarily disable JavaScript execution in Chrome to prevent exploitation
chrome://settings/content/javascript → toggle to 'Blocked'
Use Site Isolation
allEnsure site isolation is enabled to limit impact of potential exploitation
chrome://flags/#site-isolation-trial-opt-out → set to 'Disabled'
🧯 If You Can't Patch
- Deploy network filtering to block known malicious domains hosting exploit code.
- Implement application allowlisting to restrict execution of unauthorized processes from browser.
🔍 How to Verify
Check if Vulnerable:
Check Chrome version in About Google Chrome page. If version is below 114.0.5735.90, system is vulnerable.Check Version:
On Windows: "C:\Program Files\Google\Chrome\Application\chrome.exe" --version
On Linux: google-chrome --version
On macOS: /Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --versionVerify Fix Applied:
Confirm Chrome version is 114.0.5735.90 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with V8-related errors
- Unexpected Chrome process termination events
- Security event logs showing suspicious browser activity
Network Indicators:
- HTTP requests to domains hosting known exploit code
- Unusual outbound connections from Chrome processes
SIEM Query:
source="chrome_logs" AND (error="V8" OR error="heap corruption" OR process="chrome.exe" AND termination="unexpected")🔗 References
- http://packetstormsecurity.com/files/173196/Chrome-v8-internal-Object-SetPropertyWithAccessor-Type-Confusion.html
- https://chromereleases.googleblog.com/2023/05/stable-channel-update-for-desktop_30.html
- https://crbug.com/1440695
- https://security.gentoo.org/glsa/202311-11
- https://security.gentoo.org/glsa/202401-34
- https://www.debian.org/security/2023/dsa-5418
- http://packetstormsecurity.com/files/173196/Chrome-v8-internal-Object-SetPropertyWithAccessor-Type-Confusion.html
- https://chromereleases.googleblog.com/2023/05/stable-channel-update-for-desktop_30.html
- https://crbug.com/1440695
- https://security.gentoo.org/glsa/202311-11
- https://security.gentoo.org/glsa/202401-34
- https://www.debian.org/security/2023/dsa-5418
