CVE-2024-57640
📋 TL;DR
A SQL injection vulnerability in the dc_add_int component of OpenLink Virtuoso OpenSource allows attackers to execute crafted SQL statements that cause denial of service. This affects systems running vulnerable versions of Virtuoso database server. Attackers with SQL execution capabilities can exploit this to crash the database service.
💻 Affected Systems
- OpenLink Virtuoso OpenSource
📦 What is this software?
Virtuoso by Openlinksw
⚠️ Risk & Real-World Impact
Worst Case
Complete database service outage requiring restart, potential data corruption if crash occurs during critical operations.
Likely Case
Database service crash requiring manual restart, temporary unavailability of applications relying on the database.
If Mitigated
Limited impact with proper input validation and SQL injection protections in place.
🎯 Exploit Status
Requires SQL execution capability. Exploit involves crafting specific SQL statements targeting the dc_add_int component.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub issue for latest patched version
Vendor Advisory: https://github.com/openlink/virtuoso-opensource/issues/1184
Restart Required: No
Instructions:
1. Check the GitHub issue for patch availability. 2. Update to the latest patched version. 3. Test in non-production environment first. 4. Apply to production systems during maintenance window.
🔧 Temporary Workarounds
Input Validation and Parameterized Queries
allImplement strict input validation and use parameterized queries/prepared statements for all SQL operations.
Database User Privilege Reduction
allLimit database user privileges to minimum required, preventing execution of dangerous SQL functions.
🧯 If You Can't Patch
- Implement network segmentation to isolate database from untrusted networks
- Deploy web application firewall with SQL injection protection rules
🔍 How to Verify
Check if Vulnerable:
Check Virtuoso version: SELECT sys_stat('st_dbms_ver'); If version is v7.2.11 or earlier, assume vulnerable.Check Version:
SELECT sys_stat('st_dbms_ver');Verify Fix Applied:
After patching, verify version is updated and test with safe SQL injection test queries.📡 Detection & Monitoring
Log Indicators:
- Database crash logs
- Unusual SQL error messages
- Repeated connection failures
Network Indicators:
- Unusual SQL query patterns targeting dc_add_int
- Database port becoming unresponsive
SIEM Query:
source="virtuoso.log" AND ("crash" OR "segfault" OR "abnormal termination")