CVE-2025-12925
📋 TL;DR
This CVE describes an authorization bypass vulnerability in rymcu forest's UserDicController API endpoints. Attackers can remotely manipulate user dictionary functions without proper authentication, potentially modifying or deleting dictionary data. All deployments using affected code commits are vulnerable.
💻 Affected Systems
- rymcu forest
📦 What is this software?
Forest by Rymcu
⚠️ Risk & Real-World Impact
Worst Case
Unauthenticated attackers could delete or modify all user dictionary entries, potentially causing data loss or service disruption if dictionaries are critical to application functionality.
Likely Case
Attackers could add, view, or delete user dictionary entries, compromising data integrity and potentially enabling further attacks if dictionary data influences application behavior.
If Mitigated
With proper authentication and authorization controls, only authorized users could access dictionary functions, limiting impact to legitimate operations.
🎯 Exploit Status
The vulnerability is a missing authorization check on API endpoints, making exploitation straightforward via HTTP requests to the affected endpoints.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown - check for commits after de53ce79db9faa2efc4e79ce1077a302c42a1224
Vendor Advisory: https://github.com/rymcu/forest/issues/199
Restart Required: Yes
Instructions:
1. Check the GitHub repository for fixes after commit de53ce79db9faa2efc4e79ce1077a302c42a1224. 2. Update to a fixed version if available. 3. Restart the application after updating.
🔧 Temporary Workarounds
Implement API Gateway Authentication
allAdd authentication and authorization checks at the API gateway or reverse proxy level
Network Access Control
allRestrict access to the affected endpoints using firewall rules or network segmentation
🧯 If You Can't Patch
- Implement strong authentication and authorization checks for all UserDicController endpoints
- Monitor and log all access attempts to the getAll/addDic/getAllDic/deleteDic endpoints
🔍 How to Verify
Check if Vulnerable:
Check if your deployment uses code from commit de53ce79db9faa2efc4e79ce1077a302c42a1224 or earlier. Test if unauthenticated requests to /api/userdic/* endpoints succeed.Check Version:
git log --oneline -1Verify Fix Applied:
Verify that unauthenticated requests to the affected endpoints now return 401/403 status codes and authenticated requests with proper authorization succeed.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated requests to /api/userdic/* endpoints
- Multiple failed authentication attempts followed by successful dictionary operations
Network Indicators:
- HTTP requests to UserDicController endpoints without authentication headers
- Unusual patterns of dictionary modifications
SIEM Query:
source="application.logs" AND (uri_path="/api/userdic/*" AND NOT auth_token=*)