CVE-2023-5687
📋 TL;DR
This CSRF vulnerability in mosparo allows attackers to trick authenticated users into performing unintended actions on their behalf. It affects all users of mosparo versions prior to 1.0.3 who are logged into the application.
💻 Affected Systems
- mosparo
📦 What is this software?
Mosparo by Mosparo
⚠️ Risk & Real-World Impact
Worst Case
Attackers could perform administrative actions like changing configurations, deleting projects, or modifying user permissions without the victim's knowledge.
Likely Case
Attackers could manipulate spam filter settings, create/delete projects, or modify user accounts through forged requests.
If Mitigated
With proper CSRF protections, requests would be rejected unless they include valid anti-CSRF tokens, preventing unauthorized actions.
🎯 Exploit Status
Exploitation requires the victim to be authenticated and visit a malicious page while logged into mosparo.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.3
Vendor Advisory: https://github.com/mosparo/mosparo/commit/fb3ac528b7548beb802182310967968a21c1354a
Restart Required: Yes
Instructions:
1. Backup your current installation. 2. Update mosparo to version 1.0.3 or later. 3. Restart the mosparo service. 4. Verify the update was successful.
🔧 Temporary Workarounds
Implement CSRF Token Validation
allManually add CSRF token validation to all state-changing endpoints
Use SameSite Cookies
allConfigure session cookies with SameSite=Strict attribute
🧯 If You Can't Patch
- Implement web application firewall rules to detect and block CSRF attempts
- Educate users about the risks of visiting untrusted websites while logged into mosparo
🔍 How to Verify
Check if Vulnerable:
Check mosparo version - if it's below 1.0.3, it's vulnerableCheck Version:
Check mosparo admin interface or configuration files for version informationVerify Fix Applied:
Verify version is 1.0.3 or higher and test CSRF protection by attempting to submit forms without valid tokens📡 Detection & Monitoring
Log Indicators:
- Multiple failed state-changing requests from same IP
- Requests missing CSRF tokens
Network Indicators:
- HTTP POST requests to mosparo endpoints without Referer headers or CSRF tokens
SIEM Query:
source="mosparo" AND (status=403 AND message="CSRF token missing" OR status=200 AND method=POST AND user_agent contains suspicious)