CVE-2024-2358: Lollms Web UI RCE Vulnerability

CVE-2024-2358 Overview

A critical path traversal vulnerability exists in the /apply_settings endpoint of parisneo/lollms-webui that enables attackers to achieve remote code execution. The vulnerability stems from insufficient sanitization of user-supplied input within the configuration settings, specifically affecting the extensions parameter. Attackers can exploit this flaw by crafting malicious payloads containing relative path traversal sequences (../../../), allowing them to navigate to arbitrary directories on the target system. This capability enables the server to load and execute a malicious __init__.py file planted by the attacker, resulting in complete system compromise through remote code execution.

Critical Impact

This vulnerability allows unauthenticated remote attackers to execute arbitrary code on the server hosting lollms-webui, potentially leading to complete system compromise, data theft, and lateral movement within the network.

Affected Products

• parisneo/lollms-webui (all versions)
• lollms lollms_web_ui

Discovery Timeline

• 2024-05-16 - CVE-2024-2358 published to NVD
• 2025-07-09 - Last updated in NVD database

Technical Details for CVE-2024-2358

Vulnerability Analysis

This path traversal vulnerability (CWE-29) affects the /apply_settings endpoint in parisneo/lollms-webui. The vulnerability is network-accessible and requires no authentication or user interaction to exploit. The impact is severe across all three CIA triad pillars: attackers can read sensitive data (confidentiality), modify system files and configurations (integrity), and disrupt service availability through malicious code execution (availability).

The exploitation chain involves two distinct phases: first, the attacker leverages the path traversal flaw to escape the intended directory structure; second, the application's extension loading mechanism is abused to execute arbitrary Python code contained in a crafted __init__.py file.

Root Cause

The root cause of this vulnerability is improper input validation and sanitization of the extensions parameter within the /apply_settings endpoint. The application fails to properly neutralize special elements such as ../ sequences before using user-supplied paths in file system operations. This allows attackers to break out of the intended extensions directory and reference arbitrary locations on the file system.

The vulnerability is classified under CWE-29 (Path Traversal: '..\filename'), indicating the application's failure to properly validate pathnames that include directory traversal sequences.

Attack Vector

The attack is conducted over the network without requiring any authentication or privileges. An attacker can send a malicious HTTP request to the /apply_settings endpoint containing specially crafted path traversal sequences in the extensions parameter.

The exploitation process involves:

1. The attacker places a malicious __init__.py file in a known location on the target system or a location accessible via network shares
2. The attacker sends a request to /apply_settings with an extensions parameter value containing path traversal sequences (e.g., ../../../path/to/malicious/extension)
3. The server processes the request without proper sanitization, resolving the relative path to the attacker-controlled directory
4. The application's extension loading mechanism executes the malicious __init__.py file, granting the attacker arbitrary code execution on the server

Detection Methods for CVE-2024-2358

Indicators of Compromise

• HTTP requests to /apply_settings endpoint containing path traversal sequences such as ../, ..%2f, or ..%5c
• Unexpected __init__.py files appearing outside of legitimate extension directories
• Anomalous Python process execution originating from non-standard directory paths
• Log entries showing configuration changes to the extensions parameter with unusual path values

Detection Strategies

• Deploy web application firewall (WAF) rules to detect and block path traversal patterns in HTTP request parameters
• Implement file integrity monitoring on the lollms-webui installation directory and system directories
• Enable detailed logging for the /apply_settings endpoint and monitor for requests containing relative path indicators
• Use endpoint detection and response (EDR) solutions to detect suspicious Python script execution patterns

Monitoring Recommendations

• Monitor web server access logs for repeated requests to /apply_settings with encoded path traversal sequences
• Set up alerts for any configuration changes to the extensions parameter
• Track file system activity in directories commonly targeted by path traversal attacks (e.g., /etc, /tmp, user home directories)
• Monitor for new Python processes spawned by the lollms-webui application

How to Mitigate CVE-2024-2358

Immediate Actions Required

• Restrict network access to lollms-webui instances to trusted networks only until a patch is applied
• Implement WAF rules to block requests containing path traversal sequences targeting the /apply_settings endpoint
• Disable or remove the extensions functionality if not required for operations
• Review logs for any evidence of prior exploitation attempts

Patch Information

Consult the Huntr Bounty Listing for the latest information on available patches and version updates. Update to the latest version of parisneo/lollms-webui once a security fix has been released by the maintainers.

Workarounds

• Deploy the application behind a reverse proxy with strict input validation rules that sanitize path traversal sequences
• Implement network segmentation to limit the blast radius if exploitation occurs
• Run the lollms-webui application with minimal file system permissions to limit the impact of successful exploitation
• Consider containerizing the application with read-only file system mounts where possible

# Example: Restrict file system access for lollms-webui process
# Create a dedicated user with minimal permissions
sudo useradd -r -s /bin/false lollms-service

# Set restrictive permissions on the application directory
sudo chown -R lollms-service:lollms-service /opt/lollms-webui
sudo chmod -R 750 /opt/lollms-webui

# Run the application as the restricted user
sudo -u lollms-service python /opt/lollms-webui/app.py