CVE-2024-57645
📋 TL;DR
This vulnerability in OpenLink Virtuoso OpenSource allows attackers to execute crafted SQL statements that trigger a memory management flaw in the qi_inst_state_free component, causing the database server to crash and resulting in Denial of Service. Any system running vulnerable versions of Virtuoso OpenSource with SQL query processing enabled is affected.
💻 Affected Systems
- OpenLink Virtuoso OpenSource
📦 What is this software?
Virtuoso by Openlinksw
⚠️ Risk & Real-World Impact
Worst Case
Complete database service outage, disrupting all applications dependent on Virtuoso, potentially leading to extended downtime and data unavailability.
Likely Case
Intermittent database crashes requiring manual restart, causing application errors and temporary service disruption.
If Mitigated
Minimal impact with proper input validation and query filtering in place, though the underlying vulnerability remains.
🎯 Exploit Status
Requires ability to execute SQL statements, typically through application interfaces or direct database access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub issue for latest patched version
Vendor Advisory: https://github.com/openlink/virtuoso-opensource/issues/1197
Restart Required: No
Instructions:
1. Monitor the GitHub issue for patch release. 2. Update to the patched version when available. 3. Test in non-production environment first.
🔧 Temporary Workarounds
Input Validation and Filtering
allImplement strict input validation and SQL query filtering at application layer
Network Segmentation
allRestrict database access to trusted application servers only
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) with SQL injection protection rules
- Monitor for abnormal SQL query patterns and implement rate limiting
🔍 How to Verify
Check if Vulnerable:
Check Virtuoso version: SELECT sys_stat('st_dbms_version'); If version is v7.2.11 or earlier, assume vulnerable.Check Version:
SELECT sys_stat('st_dbms_version');Verify Fix Applied:
After patching, verify version is updated and test with safe SQL queries to ensure stability.📡 Detection & Monitoring
Log Indicators:
- Database crash logs
- Abnormal termination of virtuoso-t process
- Error messages containing 'qi_inst_state_free'
Network Indicators:
- Unusual SQL query patterns
- Multiple connection attempts followed by service unavailability
SIEM Query:
source="virtuoso.log" AND ("crash" OR "segmentation fault" OR "qi_inst_state_free")