CVE-2016-5048
📋 TL;DR
This SQL injection vulnerability in ReadyDesk 9.1 allows remote attackers to execute arbitrary SQL commands through the username field in the chat/staff/default.aspx page. Attackers can potentially read, modify, or delete database contents, and in worst cases gain full system control. All organizations running ReadyDesk 9.1 with the vulnerable component exposed are affected.
💻 Affected Systems
- ReadyDesk
📦 What is this software?
Readydesk by Readydesk
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, privilege escalation to system administrator, and potential remote code execution on the underlying server.
Likely Case
Database information disclosure, including user credentials, customer data, and system configuration, potentially leading to further attacks.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only allowing data viewing without modification.
🎯 Exploit Status
SQL injection via username field is straightforward to exploit with common SQL injection techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.1.1 or later
Vendor Advisory: http://www.kb.cert.org/vuls/id/294272
Restart Required: Yes
Instructions:
1. Backup your ReadyDesk installation and database. 2. Download and install the latest ReadyDesk version from the vendor. 3. Restart the IIS service or application pool. 4. Test the chat/staff/default.aspx functionality.
🔧 Temporary Workarounds
Input Validation Filter
windowsImplement server-side input validation to sanitize username field inputs
Implement parameterized queries in the chat/staff/default.aspx code
Access Restriction
windowsRestrict access to the vulnerable page using firewall rules or authentication
Add IP restriction in web.config: <security><ipSecurity allowUnlisted="false"><add ipAddress="192.168.1.0" subnetMask="255.255.255.0" /></ipSecurity></security>
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with SQL injection rules
- Restrict database user permissions to minimum required access
🔍 How to Verify
Check if Vulnerable:
Test the username field in chat/staff/default.aspx with SQL injection payloads like ' OR '1'='1Check Version:
Check ReadyDesk version in admin panel or web.config fileVerify Fix Applied:
Attempt SQL injection on the patched version and verify it rejects malicious inputs📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts with SQL-like patterns
- Access to chat/staff/default.aspx with suspicious parameters
Network Indicators:
- HTTP POST requests to chat/staff/default.aspx containing SQL keywords
- Unusual database connection patterns from web server
SIEM Query:
source="web_logs" AND uri="/chat/staff/default.aspx" AND (request CONTAINS "OR" OR request CONTAINS "UNION" OR request CONTAINS "SELECT")