CVE-2024-57631
📋 TL;DR
This vulnerability in MonetDB Server's exp_ref component allows attackers to execute crafted SQL statements that cause a denial of service (DoS) by crashing or hanging the database server. It affects organizations running vulnerable versions of MonetDB Server. The vulnerability stems from improper input validation in SQL processing.
💻 Affected Systems
- MonetDB Server
📦 What is this software?
Monetdb by Monetdb
⚠️ Risk & Real-World Impact
Worst Case
Complete database server outage resulting in application downtime, data unavailability, and potential data corruption if crashes occur during transactions.
Likely Case
Temporary service disruption requiring database restart, with potential transaction loss depending on crash timing.
If Mitigated
Minimal impact with proper network segmentation and input validation, though service could still be disrupted.
🎯 Exploit Status
Exploitation requires SQL execution capability, typically requiring database credentials. The CWE-89 classification suggests SQL injection-like behavior in the exp_ref component.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub issue for fixed version (likely v11.49.2 or later)
Vendor Advisory: https://github.com/MonetDB/MonetDB/issues/7436
Restart Required: Yes
Instructions:
1. Check current MonetDB version. 2. Review the GitHub issue for patch availability. 3. Apply the official patch from MonetDB. 4. Restart the MonetDB service. 5. Verify the fix.
🔧 Temporary Workarounds
Input Validation at Application Layer
allImplement strict input validation and parameterized queries in applications to prevent crafted SQL from reaching the database.
Network Access Restrictions
allRestrict database access to only trusted application servers using firewall rules.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate MonetDB from untrusted networks
- Deploy web application firewalls (WAF) or database firewalls to filter malicious SQL patterns
🔍 How to Verify
Check if Vulnerable:
Check if MonetDB version is v11.49.1. Review logs for unexpected crashes or hangs after SQL execution.Check Version:
monetdb versionVerify Fix Applied:
After patching, verify the version is updated and test with normal SQL operations to ensure stability.📡 Detection & Monitoring
Log Indicators:
- Database crash logs
- Unexpected termination of monetdbd process
- Error messages related to exp_ref or SQL parsing
Network Indicators:
- Unusual SQL query patterns from single sources
- High volume of complex SQL queries
SIEM Query:
source="monetdb.log" AND ("crash" OR "segfault" OR "exp_ref")