CVE-2024-21098 Overview
CVE-2024-21098 is a denial of service vulnerability affecting the Compiler component of Oracle GraalVM for JDK and Oracle GraalVM Enterprise Edition. The vulnerability allows an unauthenticated attacker with network access via multiple protocols to compromise affected Oracle GraalVM installations. While the vulnerability is difficult to exploit, successful attacks can result in partial denial of service conditions affecting the availability of the GraalVM runtime environment.
Critical Impact
Unauthenticated network-based attackers can cause partial denial of service in Oracle GraalVM environments, potentially disrupting Java applications relying on GraalVM's high-performance compiler.
Affected Products
- Oracle GraalVM for JDK versions 17.0.10, 21.0.2, and 22
- Oracle GraalVM Enterprise Edition version 20.3.13
- Oracle GraalVM Enterprise Edition version 21.3.9
Discovery Timeline
- April 16, 2024 - CVE-2024-21098 published to NVD
- December 6, 2024 - Last updated in NVD database
Technical Details for CVE-2024-21098
Vulnerability Analysis
This vulnerability resides within the Compiler component of Oracle GraalVM, which is responsible for just-in-time (JIT) compilation and optimization of Java bytecode. The flaw can be triggered remotely without authentication, though exploitation requires high attack complexity. The impact is limited to availability, specifically causing partial denial of service conditions without affecting confidentiality or integrity of the system.
GraalVM's Compiler component is a critical part of the runtime that translates Java bytecode into optimized native machine code. A vulnerability in this component could potentially be triggered through specially crafted input that causes abnormal resource consumption or processing delays during compilation operations.
Root Cause
The root cause has not been publicly disclosed by Oracle. Based on the vulnerability characteristics, it appears to involve improper handling within the compiler's processing logic that can be triggered remotely. The specific technical details have been withheld to prevent exploitation, as is common practice with Oracle security advisories.
Attack Vector
The attack vector is network-based, allowing unauthenticated remote attackers to attempt exploitation via multiple protocols. The high complexity rating indicates that successful exploitation requires specific conditions to be met, such as particular timing, configuration states, or input sequences. An attacker would need to craft specific inputs or requests that interact with the GraalVM Compiler component in a way that causes service degradation.
The vulnerability affects systems where GraalVM is accessible over the network, which could include application servers, microservices, or cloud-native applications utilizing GraalVM's polyglot capabilities or native image compilation features.
Detection Methods for CVE-2024-21098
Indicators of Compromise
- Unusual CPU utilization spikes in JVM processes running on GraalVM
- Unexpected compilation timeouts or failures in GraalVM-based applications
- Increased memory consumption in GraalVM compiler threads
- Application performance degradation coinciding with unusual network traffic patterns
Detection Strategies
- Monitor GraalVM process resource utilization for anomalous patterns indicating DoS attempts
- Implement network traffic analysis to detect unusual patterns targeting GraalVM services
- Enable verbose JIT compilation logging to identify suspicious compilation behavior
- Deploy application performance monitoring (APM) to track GraalVM compiler performance baselines
Monitoring Recommendations
- Configure alerting for GraalVM compilation thread resource exhaustion
- Implement log aggregation for GraalVM runtime events across all affected systems
- Establish baseline metrics for normal compiler operation to detect deviations
- Monitor network connections to services running on affected GraalVM versions
How to Mitigate CVE-2024-21098
Immediate Actions Required
- Inventory all systems running Oracle GraalVM for JDK versions 17.0.10, 21.0.2, or 22
- Identify Oracle GraalVM Enterprise Edition deployments running versions 20.3.13 or 21.3.9
- Apply Oracle's April 2024 Critical Patch Update to affected GraalVM installations
- Review network exposure of GraalVM-based applications and implement network segmentation where appropriate
Patch Information
Oracle has addressed this vulnerability in their April 2024 Critical Patch Update. Administrators should consult the Oracle Security Alert for April 2024 for detailed patching instructions and updated GraalVM versions that remediate this vulnerability.
For Oracle GraalVM for JDK, upgrade to a patched version beyond 17.0.10, 21.0.2, or 22 as specified in Oracle's advisory. For Oracle GraalVM Enterprise Edition, upgrade from versions 20.3.13 and 21.3.9 to the latest patched releases.
Workarounds
- Implement network access controls to limit exposure of GraalVM-based services to trusted networks only
- Deploy web application firewalls (WAF) or network intrusion prevention systems to filter potentially malicious requests
- Consider containerization with resource limits to contain potential DoS impact
- Implement rate limiting on services that interact with GraalVM compiler functionality
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
