CVE-2021-3817
📋 TL;DR
CVE-2021-3817 is an SQL injection vulnerability in WBCE CMS that allows attackers to execute arbitrary SQL commands. This can lead to authentication bypass, data theft, or complete system compromise. All users running vulnerable versions of WBCE CMS are affected.
💻 Affected Systems
- WBCE CMS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the CMS database including admin credential theft, data exfiltration, and potential remote code execution through database functions.
Likely Case
Authentication bypass leading to unauthorized admin access, password reset manipulation, and content manipulation.
If Mitigated
Limited impact with proper input validation and parameterized queries in place.
🎯 Exploit Status
Exploit requires authentication but can lead to admin password reset bypass.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.5.1 and later
Vendor Advisory: https://github.com/wbce/wbce_cms/commit/6ca63f0cad5f0cd606fdb69a372f09b7d238f1d7
Restart Required: No
Instructions:
1. Backup your current installation. 2. Download WBCE CMS version 1.5.1 or later from the official repository. 3. Replace vulnerable files with patched versions. 4. Verify the fix by checking the commit hash includes 6ca63f0cad5f0cd606fdb69a372f09b7d238f1d7.
🔧 Temporary Workarounds
Input Validation Enhancement
allImplement strict input validation for all user-supplied parameters in admin functions.
Web Application Firewall
allDeploy a WAF with SQL injection protection rules enabled.
🧯 If You Can't Patch
- Restrict admin panel access to trusted IP addresses only
- Implement database user privilege separation to limit potential damage
🔍 How to Verify
Check if Vulnerable:
Check if your WBCE CMS version is below 1.5.1 by examining the version file or admin panel.Check Version:
Check the version.php file or admin dashboard for version information.Verify Fix Applied:
Verify that the commit hash 6ca63f0cad5f0cd606fdb69a372f09b7d238f1d7 is present in your installation.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts followed by successful admin access
- Unexpected password reset requests
Network Indicators:
- SQL injection patterns in HTTP requests to admin endpoints
- Unusual database connection patterns
SIEM Query:
source="web_server" AND (uri="*/admin/*" OR uri="*/login/*") AND (query="*' OR *" OR query="*;--*" OR query="*UNION*SELECT*")🔗 References
- http://packetstormsecurity.com/files/165377/WBCE-CMS-1.5.1-Admin-Password-Reset.html
- https://github.com/wbce/wbce_cms/commit/6ca63f0cad5f0cd606fdb69a372f09b7d238f1d7
- https://huntr.dev/bounties/c330dc0d-220a-4b15-b785-5face4cf6ef7
- http://packetstormsecurity.com/files/165377/WBCE-CMS-1.5.1-Admin-Password-Reset.html
- https://github.com/wbce/wbce_cms/commit/6ca63f0cad5f0cd606fdb69a372f09b7d238f1d7
- https://huntr.dev/bounties/c330dc0d-220a-4b15-b785-5face4cf6ef7
