CVE-2024-20919

What it actually does

The vulnerability in the Hotspot component allows an unauthenticated network attacker to achieve unauthorized creation, deletion or modification of critical data by supplying crafted input to specific APIs.

Why it matters to the business

Attackers could alter important data processed by Java applications, causing integrity failures, corrupted records, and potential downstream operational or compliance issues.

How an attack unfolds

An attacker locates network-accessible services using the affected Hotspot component and supplies specially crafted data to vulnerable APIs over supported protocols to modify critical application data without authentication or user interaction.

How to fix it

Upgrade Oracle Java SE beyond 8u391, 11.0.21, 17.0.9 and 21.0.1; upgrade Oracle GraalVM for JDK beyond 17.0.9 and 21.0.1; upgrade Oracle GraalVM Enterprise Edition beyond 20.3.12, 21.3.8 and 22.3.4. Restrict network exposure of affected Java services where upgrades are delayed.

How to confirm the fix worked

Confirm installed Java versions exceed the listed affected releases, review API usage against the Hotspot component, and test that crafted inputs no longer result in unauthorized data modification.

Typical attack path

1. Discover network-exposed Java services running affected Hotspot versions
2. Identify entry points that invoke the vulnerable component APIs
3. Craft and transmit malicious input via multiple protocols to trigger unauthorized data changes

How to detect it

Review application and Java runtime logs for anomalous data modification events tied to Hotspot API usage; inspect network traffic for unexpected inputs to exposed Java endpoints.

What your security team should do

• Apply available Java updates to all affected installations as soon as possible
• Limit network accessibility of Java services using the Hotspot component
• Audit applications for direct calls to the affected APIs and apply least-privilege controls