CVE-2024-57636
📋 TL;DR
This vulnerability in OpenLink Virtuoso Open-Source allows attackers to execute crafted SQL statements that trigger a denial of service condition in the itc_sample_row_check component. Systems running vulnerable versions of Virtuoso with SQL query processing enabled are affected. The vulnerability requires SQL execution capability but can be exploited by authenticated users or through SQL injection vectors.
💻 Affected Systems
- OpenLink Virtuoso Open-Source
📦 What is this software?
Virtuoso by Openlinksw
⚠️ Risk & Real-World Impact
Worst Case
Complete service unavailability of the Virtuoso database server, disrupting all applications dependent on it, potentially requiring manual restart or recovery procedures.
Likely Case
Partial or intermittent service degradation affecting specific database operations, particularly those involving the vulnerable component during SQL query processing.
If Mitigated
Minimal impact with proper input validation, query filtering, and network segmentation limiting attack surface.
🎯 Exploit Status
Exploitation requires ability to execute SQL statements; could be combined with SQL injection vulnerabilities for unauthenticated access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub issue #1194 for patched version
Vendor Advisory: https://github.com/openlink/virtuoso-opensource/issues/1194
Restart Required: No
Instructions:
1. Monitor GitHub issue #1194 for official patch release. 2. Apply patch when available. 3. Test in non-production environment first. 4. Deploy to production systems.
🔧 Temporary Workarounds
Input Validation and Filtering
allImplement strict input validation and SQL query filtering to block crafted statements targeting the vulnerable component.
Network Segmentation
allRestrict database access to only trusted applications and users, minimizing attack surface.
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to detect and block SQL injection attempts
- Monitor database logs for unusual SQL patterns and implement rate limiting on database connections
🔍 How to Verify
Check if Vulnerable:
Check Virtuoso version: SELECT sys_stat('st_dbms_version'); If version is v7.2.11, system is 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 ensure normal operation.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL query patterns
- Database process crashes or restarts
- Error messages related to itc_sample_row_check
Network Indicators:
- Unusual SQL traffic patterns
- Multiple failed SQL queries from single source
SIEM Query:
source="virtuoso_logs" AND ("itc_sample_row_check" OR "DoS" OR "crash")