Improper Class Loading in Apache Juneau

Executive Summary

This vulnerability in Apache Juneau involves improper control of dynamically-loaded code. When parsing a value into a property of type java.lang.Class, the default class swap loads the named class with initialization enabled. This means an attacker could input a class name from the application classpath, causing that class's static initializer to run, potentially executing malicious code.

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Detection Guidance

This vulnerability involves improper class loading in Apache Juneau versions through 9.2.0. Detection requires checking the installed version of Apache Juneau and verifying if any classes with static initializers are loaded from untrusted input. No specific commands are provided in the context to directly detect this issue.

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Impact Analysis

The impact depends on the classes present in the deployment. An attacker could exploit this to execute arbitrary code on the affected system, leading to unauthorized access, data breaches, or system compromise. The CVSS score of 10.0 indicates a critical severity with high impact on confidentiality, integrity, and availability.

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Compliance Impact

This vulnerability could lead to data breaches or unauthorized access, violating GDPR's data protection requirements and HIPAA's security and privacy rules. Non-compliance may result in legal penalties, fines, or reputational damage for organizations handling sensitive data.

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Mitigation Strategies

Upgrade Apache Juneau to version 9.2.1 or later to fix the vulnerability. Check your deployment for classes that could be exploited via static initializers and remove or restrict access to them.

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