CVE-2023-24892
📋 TL;DR
This vulnerability allows attackers to spoof URLs in Microsoft Edge WebView2, potentially tricking users into visiting malicious sites. It affects applications using WebView2 control on Windows systems. Users could be redirected to phishing sites or malicious content.
💻 Affected Systems
- Microsoft Edge WebView2 Runtime
- Applications using WebView2 control
📦 What is this software?
Edge Chromium by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Users could be redirected to sophisticated phishing sites that steal credentials, financial information, or deliver malware, leading to full system compromise.
Likely Case
Users are tricked into visiting spoofed websites that appear legitimate, potentially leading to credential harvesting or malware installation.
If Mitigated
With proper URL validation and user education, impact is limited to failed phishing attempts with minimal damage.
🎯 Exploit Status
Exploitation requires user interaction (clicking a link) but no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 110.0.1587.57 or later
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24892
Restart Required: Yes
Instructions:
1. Open Microsoft Edge. 2. Click Settings > About Microsoft Edge. 3. Allow automatic update or manually update. 4. Restart Edge and affected applications.
🔧 Temporary Workarounds
Disable WebView2 in applications
windowsTemporarily disable WebView2 components in applications until patched.
🧯 If You Can't Patch
- Implement application allowlisting to restrict untrusted WebView2 usage
- Deploy network filtering to block known malicious domains and suspicious redirects
🔍 How to Verify
Check if Vulnerable:
Check WebView2 version in Edge settings or registry: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}Check Version:
reg query "HKLM\SOFTWARE\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}" /v pvVerify Fix Applied:
Verify WebView2 version is 110.0.1587.57 or higher in Edge settings.📡 Detection & Monitoring
Log Indicators:
- Unusual URL redirect patterns in application logs
- Multiple failed authentication attempts following WebView2 usage
Network Indicators:
- Unexpected outbound connections to suspicious domains after WebView2 interaction
- HTTP redirect chains ending in known malicious sites
SIEM Query:
source="*edge*" OR source="*webview*" AND (url="*redirect*" OR url="*phish*" OR url="*malicious*")