CVE-2024-43166: Apache DolphinScheduler Privilege Escalation

CVE-2024-43166 Overview

CVE-2024-43166 is an Incorrect Default Permissions vulnerability in Apache DolphinScheduler, a popular open-source distributed workflow scheduling platform. This security flaw affects Apache DolphinScheduler versions prior to 3.2.2. The vulnerability stems from improperly configured default permissions that could allow unauthorized access to sensitive resources and functionality within the application.

Critical Impact

This vulnerability allows network-based attackers to exploit incorrect default permissions without requiring authentication or user interaction, potentially leading to complete compromise of confidentiality, integrity, and availability of the affected DolphinScheduler instances.

Affected Products

• Apache DolphinScheduler versions before 3.2.2
• All installations running unpatched versions of Apache DolphinScheduler
• Enterprise environments using DolphinScheduler for workflow orchestration

Discovery Timeline

• 2025-09-03 - CVE-2024-43166 published to NVD
• 2025-11-04 - Last updated in NVD database

Technical Details for CVE-2024-43166

Vulnerability Analysis

CVE-2024-43166 is classified under CWE-276 (Incorrect Default Permissions), which occurs when software installations or configurations leave resources accessible with overly permissive access rights. In the context of Apache DolphinScheduler, this vulnerability allows attackers to access system resources or execute operations that should be restricted to authorized users only.

The vulnerability is particularly concerning for organizations using DolphinScheduler in production environments, as workflow scheduling platforms typically have access to sensitive data, credentials for connecting to various data sources, and the ability to execute arbitrary tasks across distributed systems.

Root Cause

The root cause of this vulnerability lies in the default permission settings within Apache DolphinScheduler's access control implementation. When the application is deployed with default configurations, certain resources or API endpoints may be accessible without proper authentication or authorization checks. This misconfiguration in default settings allows unauthorized users to interact with protected functionality.

Incorrect default permissions vulnerabilities commonly arise from:

• Development-friendly defaults that prioritize ease of setup over security
• Missing authentication requirements on sensitive endpoints
• Overly broad access rights assigned to anonymous or low-privilege users
• Configuration files with world-readable or world-writable permissions

Attack Vector

The attack vector for CVE-2024-43166 is network-based, meaning an attacker can exploit this vulnerability remotely without requiring local access to the target system. The exploitation does not require any privileges or user interaction, making it highly dangerous in internet-facing deployments.

An attacker could exploit this vulnerability by:

1. Identifying an exposed Apache DolphinScheduler instance on the network
2. Probing the application for endpoints or resources with misconfigured permissions
3. Accessing sensitive functionality or data that should require authentication
4. Potentially escalating access to execute arbitrary workflows or extract credentials

The exploitation mechanism involves identifying and accessing resources that lack proper permission validation. For detailed technical information about this vulnerability, refer to the Apache Mailing List Thread and the OpenWall OSS-Security Post.

Detection Methods for CVE-2024-43166

Indicators of Compromise

• Unexpected access to DolphinScheduler resources from unauthenticated sessions
• Unusual API calls to sensitive endpoints without proper authorization tokens
• New or modified workflow definitions created by unauthorized users
• Access logs showing successful requests to administrative functions from unknown sources
• Abnormal task execution patterns or unauthorized job submissions

Detection Strategies

• Monitor DolphinScheduler access logs for requests to sensitive endpoints without valid authentication
• Implement network-level detection rules for unusual traffic patterns to DolphinScheduler services
• Deploy web application firewalls (WAF) to detect and block unauthorized access attempts
• Use SentinelOne Singularity platform to monitor for post-exploitation activities on hosts running DolphinScheduler

Monitoring Recommendations

• Enable comprehensive logging for all DolphinScheduler API requests and authentication events
• Configure alerting for failed and successful authentication attempts from unexpected IP ranges
• Implement regular security audits of DolphinScheduler permission configurations
• Monitor for unusual workflow creation or modification activities outside normal business hours

How to Mitigate CVE-2024-43166

Immediate Actions Required

• Upgrade Apache DolphinScheduler to version 3.3.1 or later immediately
• Audit current permission configurations and restrict access to sensitive resources
• Ensure DolphinScheduler instances are not directly exposed to the internet without proper access controls
• Review access logs for any signs of unauthorized access or exploitation attempts
• Implement network segmentation to limit exposure of DolphinScheduler services

Patch Information

Apache has released version 3.3.1 of DolphinScheduler which addresses this vulnerability. Users are strongly recommended to upgrade to this version or later to remediate the security issue. The patch corrects the default permission settings to ensure proper access controls are enforced out of the box.

For upgrade instructions and release notes, consult the official Apache DolphinScheduler documentation and the Apache Mailing List Thread.

Workarounds

• Place DolphinScheduler behind an authenticating reverse proxy to enforce access controls
• Configure firewall rules to restrict access to DolphinScheduler ports to trusted networks only
• Manually review and harden permission settings in the DolphinScheduler configuration files
• Implement IP allowlisting for administrative access to the platform

# Configuration example - Restrict network access to DolphinScheduler
# Add firewall rules to limit access to trusted networks only

# Example iptables rules to restrict access to DolphinScheduler API port
iptables -A INPUT -p tcp --dport 12345 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 12345 -j DROP

# Ensure DolphinScheduler is behind a reverse proxy with authentication
# Example nginx configuration snippet
# location /dolphinscheduler/ {
#     auth_basic "Restricted Access";
#     auth_basic_user_file /etc/nginx/.htpasswd;
#     proxy_pass http://localhost:12345/;
# }