CVE-2024-57646
📋 TL;DR
This SQL injection vulnerability in OpenLink Virtuoso's psiginfo component allows attackers to execute crafted SQL statements, potentially causing denial of service. It affects systems running vulnerable versions of Virtuoso Open-Source Edition, particularly those exposed to untrusted SQL input.
💻 Affected Systems
- OpenLink Virtuoso Open-Source Edition
📦 What is this software?
Virtuoso by Openlinksw
⚠️ Risk & Real-World Impact
Worst Case
Complete service unavailability through resource exhaustion or database corruption, potentially affecting dependent applications.
Likely Case
Service disruption through CPU/memory exhaustion from malformed SQL queries, requiring restart of Virtuoso service.
If Mitigated
Minimal impact with proper input validation and query sanitization in place.
🎯 Exploit Status
Requires ability to submit SQL queries to vulnerable component. No public exploit code available at time of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub issue for latest patched version
Vendor Advisory: https://github.com/openlink/virtuoso-opensource/issues/1199
Restart Required: No
Instructions:
1. Monitor GitHub issue #1199 for official patch release. 2. Update to patched version when available. 3. Test in non-production environment first. 4. Apply to production systems during maintenance window.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation for SQL queries passed to psiginfo component
# Configure application-layer validation to reject malformed SQL
Access Restriction
allRestrict access to Virtuoso SQL endpoints to trusted sources only
# Use firewall rules to limit access to Virtuoso ports (typically 1111, 8890)
🧯 If You Can't Patch
- Implement network segmentation to isolate Virtuoso instances from untrusted networks
- Deploy web application firewall (WAF) with SQL injection protection rules
🔍 How to Verify
Check if Vulnerable:
Check Virtuoso version: if running v7.2.11 or earlier and psiginfo component is enabled, system is likely vulnerable.Check Version:
SELECT sys_stat('st_dbms_version');Verify Fix Applied:
After patching, verify version is updated beyond v7.2.11 and test with safe SQL queries to confirm functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL query patterns in Virtuoso logs
- Multiple failed query attempts
- Resource exhaustion warnings
Network Indicators:
- Unusual SQL traffic patterns to Virtuoso ports
- Requests with malformed SQL syntax
SIEM Query:
source="virtuoso.log" AND ("psiginfo" OR "SQL error" OR "resource exhausted")