CVE-2024-47219: Vesoft NebulaGraph Database RCE Vulnerability

CVE-2024-47219 Overview

CVE-2024-47219 is a critical shell command injection vulnerability discovered in vesoft NebulaGraph, a popular open-source distributed graph database. The vulnerability affects NebulaGraph versions through 3.8.0, allowing attackers to inject and execute arbitrary shell commands on the underlying system. This vulnerability poses a significant risk to organizations using NebulaGraph for their graph database needs, as successful exploitation could lead to complete system compromise.

Critical Impact

This command injection vulnerability enables unauthenticated remote attackers to execute arbitrary shell commands on systems running vulnerable versions of NebulaGraph, potentially leading to full system compromise, data exfiltration, and lateral movement within the network.

Affected Products

• vesoft NebulaGraph Database versions through 3.8.0

Discovery Timeline

• 2024-09-22 - CVE-2024-47219 published to NVD
• 2025-04-28 - Last updated in NVD database

Technical Details for CVE-2024-47219

Vulnerability Analysis

CVE-2024-47219 represents a command injection vulnerability (CWE-94: Improper Control of Generation of Code) in vesoft NebulaGraph. The vulnerability exists due to insufficient input sanitization when processing user-supplied data, allowing attackers to inject malicious shell commands that are subsequently executed by the underlying operating system.

Command injection vulnerabilities occur when an application passes unsafe user-supplied data to a system shell without proper validation or escaping. In the context of NebulaGraph, this flaw can be exploited remotely over the network without requiring authentication, making it particularly dangerous for internet-exposed deployments.

The vulnerability allows attackers to achieve complete system compromise by executing arbitrary commands with the privileges of the NebulaGraph service process. This could enable data theft, installation of backdoors, pivoting to other systems, or ransomware deployment.

Root Cause

The root cause of this vulnerability is improper input validation and sanitization within NebulaGraph's code path that processes user-controllable input before passing it to shell execution functions. The application fails to properly escape or filter special characters that can be used to terminate the intended command and inject additional malicious commands.

Attack Vector

This vulnerability is exploitable over the network, requiring no authentication or user interaction. An attacker can craft malicious input containing shell metacharacters (such as ;, |, &&, or backticks) to break out of the intended command context and inject arbitrary commands. The injected commands execute with the same privileges as the NebulaGraph service, potentially allowing full system compromise.

The attack does not require any special conditions beyond network access to the vulnerable NebulaGraph instance. Common exploitation scenarios include chaining commands to establish reverse shells, downloading and executing additional payloads, or directly exfiltrating sensitive data from the database or file system.

Detection Methods for CVE-2024-47219

Indicators of Compromise

• Unexpected shell processes spawned as child processes of NebulaGraph services
• Unusual network connections originating from the NebulaGraph server to external IP addresses
• Presence of shell metacharacters (;, |, &&, `, $()) in NebulaGraph logs or query inputs
• Suspicious file system modifications or new files created in writable directories

Detection Strategies

• Monitor NebulaGraph service logs for requests containing shell metacharacters or command injection patterns
• Deploy network intrusion detection rules to identify command injection attempts targeting NebulaGraph
• Implement endpoint detection to alert on unexpected process trees where NebulaGraph spawns shell processes
• Use application-layer firewalls to filter malicious input patterns before they reach the database

Monitoring Recommendations

• Enable verbose logging on NebulaGraph instances to capture all incoming queries and commands
• Configure SIEM alerts for anomalous process execution patterns on database servers
• Monitor outbound network traffic from NebulaGraph servers for unexpected connections
• Regularly audit NebulaGraph access logs for signs of exploitation attempts

How to Mitigate CVE-2024-47219

Immediate Actions Required

• Upgrade NebulaGraph to a patched version that includes the security fix from PR #5936
• Restrict network access to NebulaGraph instances using firewalls, limiting connections to trusted sources only
• Review NebulaGraph logs for any signs of prior exploitation attempts
• Implement network segmentation to isolate database servers from direct internet exposure

Patch Information

vesoft has addressed this vulnerability through a pull request in the official GitHub repository. The specific fix is available in commit cd6c5976ccfe817b2e0a2d46227cd361bfefb45c. Organizations should update their NebulaGraph installations to incorporate this fix as soon as possible.

Workarounds

• Place NebulaGraph instances behind a reverse proxy or web application firewall that can filter command injection patterns
• Implement strict network access controls to limit which hosts can connect to the NebulaGraph service
• Run NebulaGraph with minimal operating system privileges to limit the impact of successful exploitation
• Consider temporarily disabling vulnerable functionality if the specific attack vector can be identified and isolated

# Example: Restrict NebulaGraph network access using iptables
# Allow connections only from trusted application servers
iptables -A INPUT -p tcp --dport 9669 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 9669 -j DROP