CVE-2024-30056
📋 TL;DR
This vulnerability in Microsoft Edge (Chromium-based) allows an attacker to potentially access sensitive information from the browser's memory. It affects users running vulnerable versions of Microsoft Edge on Windows systems. The vulnerability could expose browsing data or other information that should remain private.
💻 Affected Systems
- Microsoft Edge (Chromium-based)
📦 What is this software?
Edge Chromium by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
An attacker could extract sensitive user data such as passwords, cookies, session tokens, or other private information from browser memory, leading to account compromise or data theft.
Likely Case
Limited information disclosure of non-critical browser data or memory contents, potentially exposing some user activity or system information.
If Mitigated
With proper patching and security controls, the risk is minimal as the vulnerability is addressed before exploitation.
🎯 Exploit Status
Exploitation requires user interaction (visiting malicious site) and specific conditions to trigger the information disclosure.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 124.0.2478.80 or later
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-30056
Restart Required: Yes
Instructions:
1. Open Microsoft Edge. 2. Click Settings (three dots) → Help and feedback → About Microsoft Edge. 3. Browser will automatically check for and install updates. 4. Restart Edge when prompted.
🔧 Temporary Workarounds
Disable JavaScript
windowsTemporarily disable JavaScript to prevent exploitation through malicious websites
edge://settings/content/javascript
Use Alternative Browser
allTemporarily use a different browser until Edge is updated
🧯 If You Can't Patch
- Restrict user access to untrusted websites
- Implement application whitelisting to control browser usage
🔍 How to Verify
Check if Vulnerable:
Check Edge version: Open Edge → Settings → About Microsoft Edge. If version is below 124.0.2478.80, system is vulnerable.Check Version:
edge://settings/helpVerify Fix Applied:
Verify Edge version is 124.0.2478.80 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Unusual memory access patterns in browser processes
- Multiple crash reports from Edge
Network Indicators:
- Connections to known malicious domains that could host exploit code
SIEM Query:
source="Microsoft-Windows-Security-Auditing" EventID=4688 | where ProcessName contains "msedge.exe" | where CommandLine contains suspicious patterns