CVE-2024-20952
📋 TL;DR
This Java security vulnerability allows attackers to bypass sandbox protections in client-side Java deployments. It affects Java SE, GraalVM for JDK, and GraalVM Enterprise Edition when running untrusted code from the internet. Server deployments running only trusted code are not affected.
💻 Affected Systems
- Oracle Java SE
- Oracle GraalVM for JDK
- Oracle GraalVM Enterprise Edition
📦 What is this software?
Cloud Insights Storage Workload Security Agent by Netapp
View all CVEs affecting Cloud Insights Storage Workload Security Agent →
Graalvm by Oracle
Graalvm by Oracle
Graalvm by Oracle
Jdk by Oracle
Jdk by Oracle
Jdk by Oracle
Jdk by Oracle
Jdk by Oracle
Jre by Oracle
Jre by Oracle
Jre by Oracle
Jre by Oracle
Jre by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
Openjdk by Oracle
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of Java application with unauthorized access to all data, ability to create/delete/modify critical data, and potential system takeover.
Likely Case
Data exfiltration or manipulation in client-side Java applications running untrusted web content.
If Mitigated
Minimal impact if only running trusted server-side code or if Java web content is disabled.
🎯 Exploit Status
Requires network access via multiple protocols and is difficult to exploit according to Oracle.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Java SE: 8u401, 11.0.22, 17.0.10, 21.0.2; GraalVM: Check Oracle advisory for specific patched versions
Vendor Advisory: https://www.oracle.com/security-alerts/cpujan2024.html
Restart Required: Yes
Instructions:
1. Download latest Java version from Oracle. 2. Uninstall old version. 3. Install patched version. 4. Restart affected applications/services.
🔧 Temporary Workarounds
Disable Java Web Start and Applets
allPrevent execution of untrusted Java web content
For browsers: Disable Java plugin
System-wide: Remove Java browser integration
Network Segmentation
allRestrict network access to Java applications
firewall rules to limit Java application network exposure
🧯 If You Can't Patch
- Disable Java in browsers and remove Java web plugin functionality
- Implement strict network controls to limit Java application network access
🔍 How to Verify
Check if Vulnerable:
Check Java version with 'java -version' and compare against affected versions listCheck Version:
java -versionVerify Fix Applied:
Verify installed Java version is patched: 'java -version' should show version higher than affected ones📡 Detection & Monitoring
Log Indicators:
- Unexpected Java process spawning
- Java sandbox violation logs
- Unusual network connections from Java processes
Network Indicators:
- Unusual outbound connections from Java applications
- Multiple protocol attempts to Java services
SIEM Query:
source="java.log" AND (event="SecurityException" OR event="sandbox violation")🔗 References
- https://lists.debian.org/debian-lts-announce/2024/01/msg00023.html
- https://security.netapp.com/advisory/ntap-20240201-0002/
- https://www.oracle.com/security-alerts/cpujan2024.html
- https://lists.debian.org/debian-lts-announce/2024/01/msg00023.html
- https://security.netapp.com/advisory/ntap-20240201-0002/
- https://security.netapp.com/advisory/ntap-20241108-0002/
- https://www.oracle.com/security-alerts/cpujan2024.html
