CVE-2023-45902
📋 TL;DR
Dreamer CMS v4.1.3 contains a Cross-Site Request Forgery (CSRF) vulnerability in the attachment deletion function. This allows attackers to trick authenticated administrators into unknowingly deleting attachments by visiting a malicious webpage. Only administrators with attachment deletion privileges are affected.
💻 Affected Systems
- Dreamer CMS
📦 What is this software?
Dreamer Cms by Iteachyou
⚠️ Risk & Real-World Impact
Worst Case
An attacker could delete all attachments from the CMS, causing data loss and potential website functionality issues if attachments are critical to content.
Likely Case
Selective deletion of important attachments, disrupting website content and potentially causing broken links or missing media.
If Mitigated
No impact if proper CSRF protections are implemented or if administrators don't visit malicious sites while authenticated.
🎯 Exploit Status
Exploitation requires the victim to be authenticated as an administrator and visit a malicious webpage.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None known
Restart Required: No
Instructions:
Check for official patches from Dreamer CMS developers. If unavailable, implement CSRF tokens in the /admin/attachment/delete endpoint.
🔧 Temporary Workarounds
Implement CSRF Protection
allAdd CSRF tokens to the attachment deletion form and validate them server-side.
Modify /admin/attachment/delete endpoint to require and validate CSRF tokens
Restrict Admin Access
allLimit administrator access to trusted networks and require separate authentication for sensitive actions.
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to detect and block CSRF attempts
- Educate administrators about CSRF risks and safe browsing practices
🔍 How to Verify
Check if Vulnerable:
Check if Dreamer CMS version is 4.1.3 and if /admin/attachment/delete endpoint lacks CSRF protection.Check Version:
Check CMS configuration files or admin panel for version informationVerify Fix Applied:
Test that /admin/attachment/delete endpoint now requires and validates CSRF tokens.📡 Detection & Monitoring
Log Indicators:
- Multiple attachment deletion requests from same admin session without corresponding form submissions
Network Indicators:
- HTTP POST requests to /admin/attachment/delete without Referer header validation
SIEM Query:
source="web_logs" AND uri="/admin/attachment/delete" AND NOT referer="*admin*"