CVE-2024-45601
📋 TL;DR
This vulnerability in the Mesop Python UI framework allows attackers to access unauthorized files on the server through insufficient input validation in a specific endpoint. It affects all users running vulnerable versions of Mesop web applications. The vulnerability could lead to exposure of sensitive server files.
💻 Affected Systems
- Mesop
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete server file system compromise, exposing sensitive configuration files, credentials, and application source code.
Likely Case
Unauthorized access to application files, configuration files, and potentially sensitive data stored in accessible directories.
If Mitigated
Limited access to non-critical files if proper file permissions and directory restrictions are in place.
🎯 Exploit Status
The vulnerability appears to be a path traversal issue that could be exploited with simple HTTP requests.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.12.4
Vendor Advisory: https://github.com/google/mesop/security/advisories/GHSA-pmv9-3xqp-8w42
Restart Required: Yes
Instructions:
1. Update Mesop using pip: pip install --upgrade mesop==0.12.4
2. Restart your Mesop application
3. Verify the update was successful
🔧 Temporary Workarounds
Input Validation Middleware
allImplement custom middleware to validate and sanitize all input parameters before processing
# Add input validation in your Mesop app
# Example: Validate file path parameters
import os
from pathlib import Path
def validate_path(user_input):
base_path = Path('/allowed/directory')
requested = Path(user_input).resolve()
return requested.is_relative_to(base_path)
🧯 If You Can't Patch
- Implement strict file access controls and permissions on the server
- Deploy a web application firewall (WAF) with path traversal protection rules
🔍 How to Verify
Check if Vulnerable:
Check Mesop version: pip show mesop | grep VersionCheck Version:
pip show mesop | grep VersionVerify Fix Applied:
Verify version is 0.12.4 or higher: pip show mesop | grep Version📡 Detection & Monitoring
Log Indicators:
- Unusual file path patterns in request logs
- Multiple failed attempts to access non-existent files
- Requests with ../ patterns or directory traversal sequences
Network Indicators:
- HTTP requests with path traversal sequences (../, ..\, %2e%2e%2f)
- Requests to unexpected file extensions or paths
SIEM Query:
source="web_server_logs" AND (uri="*../*" OR uri="*..\\*" OR uri="*%2e%2e%2f*")