CVE-2018-5992
📋 TL;DR
This CVE describes a SQL injection vulnerability in the Staff Master component for Joomla! CMS. Attackers can exploit the 'name' parameter in view=staff requests to execute arbitrary SQL commands on the database. All Joomla! installations using the vulnerable Staff Master component are affected.
💻 Affected Systems
- Joomla! Staff Master component
📦 What is this software?
Staff Master by Staff Master Project
Staff Master by Staff Master Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data manipulation, authentication bypass, and potential remote code execution via database functions.
Likely Case
Database information disclosure, including user credentials, sensitive data extraction, and potential privilege escalation.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection.
🎯 Exploit Status
Public exploit code available on Exploit-DB. Simple parameter manipulation required. No authentication needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.0 RC 1
Vendor Advisory: https://www.joomla.org/announcements/release-news/
Restart Required: No
Instructions:
1. Update Staff Master component to latest version. 2. Update Joomla! core to latest version. 3. Remove or disable component if not needed.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation for 'name' parameter to reject SQL special characters
Modify component PHP files to sanitize $_GET['name'] parameter using Joomla! JFilterInput
WAF Rule
allImplement web application firewall rules to block SQL injection patterns
Add WAF rule: Detect and block requests containing SQL keywords in 'name' parameter
🧯 If You Can't Patch
- Disable or remove the Staff Master component entirely
- Implement network segmentation to isolate vulnerable system from sensitive data
🔍 How to Verify
Check if Vulnerable:
Check Joomla! extensions manager for Staff Master component version. If version is 1.0 RC 1 or earlier, system is vulnerable.Check Version:
Check Joomla! administrator panel → Extensions → Manage → Staff Master component versionVerify Fix Applied:
After update, test the vulnerable endpoint with SQL injection payloads to confirm they are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in Joomla! logs
- Multiple requests with SQL keywords in parameters
- Failed login attempts following SQL injection attempts
Network Indicators:
- HTTP requests with SQL syntax in 'name' parameter
- Unusual database query patterns from web server
SIEM Query:
web.url:*view=staff* AND (web.param.name:*SELECT* OR web.param.name:*UNION* OR web.param.name:*OR*)