CVE-2024-2700: Quarkus Information Disclosure Vulnerability

CVE-2024-2700 Overview

A significant information exposure vulnerability was discovered in the quarkus-core component that affects how Quarkus applications handle environment variables during the build process. The vulnerability allows local environment variables from the quarkus.* namespace to be captured and embedded into the compiled application, potentially exposing sensitive development or CI/CD configuration values in production deployments.

Critical Impact

Applications built with Quarkus may inherit dangerous development-time configurations such as database reset commands, TLS certificate trust bypass settings, or other security-sensitive properties that were only intended for testing environments.

Affected Products

• Quarkus Core (quarkus-core component)
• Red Hat Build of Quarkus
• Applications using Quarkus framework with .env file configurations

Discovery Timeline

• April 4, 2024 - CVE-2024-2700 published to NVD
• December 12, 2024 - Last updated in NVD database

Technical Details for CVE-2024-2700

Vulnerability Analysis

This vulnerability (CWE-526: Cleartext Storage of Sensitive Information in an Environment Variable) stems from Quarkus's build-time configuration capture mechanism. During the application build process, Quarkus captures local environment variables from the quarkus.* namespace and embeds them directly into the compiled application artifact.

The dangerous aspect of this behavior is that the resulting application inherits these captured values at runtime, regardless of the actual production environment configuration. This creates a scenario where development or CI/CD testing configurations—which are often intentionally insecure for convenience—persist into production deployments.

Critically, this behavior only affects configuration properties within the quarkus.* namespace. Application-specific custom properties are not subject to this capture mechanism.

Root Cause

The root cause lies in Quarkus's ahead-of-time compilation optimization strategy. Quarkus captures configuration at build time to enable faster startup and reduced memory footprint through native compilation. However, this design decision inadvertently captures environment variables that may contain sensitive or dangerous configuration values intended only for the build/test environment.

When developers or CI systems set quarkus.* environment variables (or use the .env facility) for testing purposes—such as enabling database drops on startup, trusting all TLS certificates, or bypassing security validations—these values become permanently embedded in the application binary.

Attack Vector

The attack vector requires local access with low privileges. An attacker with access to the built application artifact or runtime environment could exploit this vulnerability in the following ways:

1. Configuration Extraction: Examining the built application to discover embedded sensitive configurations
2. Behavior Exploitation: If dangerous configurations like quarkus.datasource.drop-on-startup=true or TLS trust bypass settings are captured, the production application will execute these insecure behaviors
3. Supply Chain Risk: Build environments that set permissive security configurations for testing could unknowingly propagate these settings to production artifacts

The vulnerability is particularly concerning in CI/CD pipelines where environment variables are commonly used to configure test databases, enable debug modes, or bypass certificate validation for internal services.

Detection Methods for CVE-2024-2700

Indicators of Compromise

• Unexpected database schema modifications or data deletions in production environments
• TLS/SSL certificate validation bypasses in production application logs
• Application behavior inconsistent with production configuration files
• Presence of development-only quarkus.* configurations in deployed artifacts

Detection Strategies

• Audit built Quarkus application artifacts for embedded configuration values using decompilation or configuration dump utilities
• Compare runtime configuration against expected production settings to identify discrepancies
• Review CI/CD pipeline environment variables for potentially dangerous quarkus.* settings
• Implement configuration validation checks that verify expected production values at application startup

Monitoring Recommendations

• Enable verbose logging for Quarkus configuration loading to track active property sources
• Monitor for unexpected database operations that may indicate captured development configurations
• Implement runtime configuration auditing to detect mismatches between expected and actual settings
• Set up alerts for TLS certificate validation failures or bypasses in production environments

How to Mitigate CVE-2024-2700

Immediate Actions Required

• Review all Quarkus applications for potentially captured dangerous environment variables
• Rebuild affected applications in clean environments without development/test quarkus.* environment variables
• Implement explicit configuration overrides in production deployments for security-sensitive properties
• Audit CI/CD pipelines to ensure dangerous configurations are not set during release builds

Patch Information

Red Hat has released multiple security advisories addressing this vulnerability. Apply the appropriate patches based on your deployment:

• Red Hat Security Advisory RHSA-2024:2106
• Red Hat Security Advisory RHSA-2024:2705
• Red Hat Security Advisory RHSA-2024:3527
• Red Hat Security Advisory RHSA-2024:4028
• Red Hat Security Advisory RHSA-2024:4873
• Red Hat Security Advisory RHSA-2024:11023

For detailed CVE analysis, refer to the Red Hat CVE Analysis for CVE-2024-2700.

Workarounds

• Use explicit application.properties or application.yaml files for configuration instead of environment variables for sensitive quarkus.* settings
• Implement a clean build environment policy that prohibits setting dangerous quarkus.* environment variables during release builds
• Override potentially dangerous captured values with safe defaults using runtime configuration profiles
• Add build-time validation scripts to detect and fail builds when dangerous environment variables are present

# Configuration example - Explicit production overrides in application.properties
# Place this in src/main/resources/application.properties for production profile
%prod.quarkus.hibernate-orm.database.generation=none
%prod.quarkus.tls.trust-all=false
%prod.quarkus.datasource.jdbc.url=${PROD_DATABASE_URL}