CVE-2024-11482: Trellix ESM RCE Vulnerability

CVE-2024-11482 Overview

A critical command injection vulnerability exists in Trellix Enterprise Security Manager (ESM) version 11.6.10 that allows unauthenticated attackers to gain remote code execution capabilities. The vulnerability resides in the internal Snowservice API, which can be accessed without authentication. Successful exploitation enables attackers to execute arbitrary commands with root-level privileges on affected systems.

Critical Impact

Unauthenticated remote code execution as root user through command injection in the Snowservice API, allowing complete system compromise of enterprise security infrastructure.

Affected Products

• Trellix Enterprise Security Manager 11.6.10
• ESM Snowservice API component

Discovery Timeline

• 2024-11-29 - CVE CVE-2024-11482 published to NVD
• 2025-10-28 - Last updated in NVD database

Technical Details for CVE-2024-11482

Vulnerability Analysis

This vulnerability (classified as CWE-78: Improper Neutralization of Special Elements used in an OS Command) affects the Trellix Enterprise Security Manager's internal Snowservice API. The critical flaw allows unauthenticated external actors to interact with an API endpoint that should be restricted to internal operations only. Once access is gained, attackers can leverage a command injection vulnerability to execute arbitrary system commands.

The exploitation occurs entirely over the network without requiring any user interaction or prior authentication. The impact is severe as commands execute with root privileges, granting attackers complete control over the affected ESM appliance, including access to all security event data, configuration settings, and the ability to disable or manipulate security monitoring capabilities.

Root Cause

The root cause stems from two compounding security failures: first, improper access controls that allow unauthenticated access to the internal Snowservice API, and second, insufficient input validation and sanitization within the API that permits command injection. User-supplied input is passed directly to system shell commands without proper escaping or validation, enabling OS command execution.

Attack Vector

The attack vector is network-based and requires no authentication or user interaction. An attacker can remotely access the exposed Snowservice API endpoint and craft malicious requests containing shell metacharacters or command separators. These malicious inputs are processed by the backend without proper sanitization, resulting in arbitrary command execution within the context of the root user.

The vulnerability is particularly dangerous in enterprise environments where ESM systems are deployed to aggregate and monitor security events across the organization. Compromising such a system could allow attackers to:

• Disable security monitoring and alerting
• Access sensitive security event logs and threat intelligence
• Use the compromised system as a pivot point for lateral movement
• Manipulate security data to cover tracks of other malicious activities

Detection Methods for CVE-2024-11482

Indicators of Compromise

• Unexpected network connections to the ESM Snowservice API from external or untrusted IP addresses
• Anomalous process spawning from ESM service processes, particularly shell interpreters (/bin/sh, /bin/bash)
• Unusual root-level process activity on ESM appliances outside of normal maintenance windows
• Modified configuration files or unexpected cron jobs on ESM systems

Detection Strategies

• Monitor network traffic to ESM appliances for unusual API requests to the Snowservice endpoint
• Implement process monitoring on ESM systems to detect unexpected command execution patterns
• Review authentication logs for access attempts to internal API endpoints from external sources
• Deploy network intrusion detection signatures to identify command injection patterns in HTTP requests

Monitoring Recommendations

• Enable verbose logging on ESM appliances and forward logs to an independent SIEM solution
• Implement file integrity monitoring on critical ESM configuration and binary files
• Set up alerts for any root-level process execution that deviates from established baselines
• Monitor for outbound connections from ESM systems to unexpected destinations

How to Mitigate CVE-2024-11482

Immediate Actions Required

• Apply the latest security patches from Trellix immediately to all affected ESM installations
• Restrict network access to ESM appliances using firewall rules, limiting connectivity to trusted management networks only
• Audit ESM systems for signs of compromise before and after patching
• Review and strengthen network segmentation around security infrastructure

Patch Information

Trellix has released security updates to address this vulnerability. Administrators should consult the Trellix Security Advisory for detailed patch information and upgrade instructions. The vulnerability was also disclosed through HackerOne Report #2817658.

Workarounds

• Implement strict network segmentation to isolate ESM appliances from untrusted networks
• Use network firewalls or access control lists to block external access to the Snowservice API ports
• Deploy a web application firewall (WAF) in front of ESM management interfaces to filter malicious requests
• Enable enhanced logging and monitoring while awaiting patch deployment

# Example: Restrict network access to ESM management interfaces
# Add firewall rules to limit access to trusted management network only
iptables -A INPUT -p tcp --dport <esm_api_port> -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport <esm_api_port> -j DROP