CVE-2024-57655

What it actually does

The flaw in the dfe_n_in_order component permits remote attackers to submit crafted SQL statements that trigger a denial of service, likely through an injection vector causing resource exhaustion or process crash in Virtuoso Open Source 7.2.11.

Why it matters to the business

Successful exploitation can render database services unavailable, leading to application downtime, interrupted data access, and operational disruption for systems relying on the affected database server.

How an attack unfolds

An attacker with network access to a Virtuoso instance crafts and submits malicious SQL statements targeting the dfe_n_in_order component to induce a denial-of-service condition without requiring authentication in many deployments.

How to fix it

Upgrade Virtuoso Open Source to a version that resolves the dfe_n_in_order component issue; restrict direct SQL access from untrusted sources and apply network-level controls until patched.

How to confirm the fix worked

Confirm the installed Virtuoso version is newer than 7.2.11, review component source or release notes for the fix, and test query handling under load with known-bad SQL patterns in a non-production environment.

Typical attack path

1. Locate an exposed Virtuoso Open Source instance
2. Craft SQL statements exploiting the dfe_n_in_order component
3. Submit the malicious queries to trigger resource exhaustion or crash

How to detect it

Review database server logs for repeated or malformed SQL submissions around the dfe_n_in_order component, high CPU or memory usage spikes without legitimate workload, and unexpected process terminations.

What your security team should do

• Prioritize patching the database server due to potential service disruption
• Limit SQL execution privileges to trusted accounts only
• Enable logging of all incoming SQL statements for anomaly detection