CVE-2024-22729: Netis MW5360 Firmware RCE Vulnerability

CVE-2024-22729 Overview

CVE-2024-22729 is a command injection vulnerability affecting the NETIS SYSTEMS MW5360 router firmware version 1.0.1.3031. The vulnerability exists in the password parameter on the login page, allowing remote attackers to execute arbitrary commands on the affected device without authentication. This flaw enables complete system compromise through the web management interface.

Critical Impact

Unauthenticated attackers can execute arbitrary system commands on the affected router, potentially gaining full control of the device, intercepting network traffic, and using it as a pivot point for further attacks on the internal network.

Affected Products

• NETIS SYSTEMS MW5360 Firmware version 1.0.1.3031
• NETIS SYSTEMS MW5360 Hardware Device

Discovery Timeline

• 2024-01-25 - CVE-2024-22729 published to NVD
• 2025-06-04 - Last updated in NVD database

Technical Details for CVE-2024-22729

Vulnerability Analysis

This command injection vulnerability (CWE-77) affects the login page of the NETIS MW5360 router's web interface. The password parameter is not properly sanitized before being passed to system functions, allowing attackers to inject and execute arbitrary operating system commands. This is classified as a blind command injection, meaning the output of injected commands may not be directly visible to the attacker, but execution still occurs on the device.

The vulnerability requires no authentication or user interaction to exploit. An attacker with network access to the router's management interface can craft malicious requests containing shell metacharacters or command separators within the password field, which are then processed by the underlying system shell.

Root Cause

The root cause of this vulnerability is improper input validation and sanitization of user-supplied data in the password parameter. The application fails to neutralize special elements (such as shell metacharacters like ;, |, &&, or backticks) before incorporating user input into commands executed by the operating system. This lack of proper input sanitization allows attackers to break out of the intended command context and execute arbitrary commands.

Attack Vector

The attack vector is network-based, targeting the router's web management interface. An attacker can exploit this vulnerability by sending a specially crafted HTTP request to the login page with malicious payload embedded in the password parameter. The attack does not require authentication, prior access to the device, or any user interaction.

Exploitation can be performed remotely by any attacker who can reach the device's web interface, which may be exposed to the internet if remote management is enabled or if the attacker is on the local network. The blind nature of the injection means attackers typically use out-of-band techniques such as DNS callbacks, reverse shells, or time-based delays to confirm successful exploitation.

For technical details regarding the exploitation mechanism, refer to the GitHub CVE PoC Repository.

Detection Methods for CVE-2024-22729

Indicators of Compromise

• Unusual HTTP requests to the router login page containing shell metacharacters (;, |, &&, `, $()) in the password parameter
• Unexpected outbound network connections from the router to external IP addresses
• Presence of unauthorized processes or services running on the device
• Unexpected DNS queries originating from the router to suspicious domains

Detection Strategies

• Monitor web server logs on the router for login requests containing suspicious characters or command injection patterns in POST parameters
• Deploy network intrusion detection systems (IDS/IPS) with signatures for command injection attempts targeting NETIS devices
• Use web application firewalls (WAF) to filter requests containing shell metacharacters in login credentials
• Monitor for anomalous behavior from the router such as unexpected outbound connections or changes in routing tables

Monitoring Recommendations

• Implement continuous monitoring of network traffic to and from the router's management interface
• Enable logging on the NETIS device if available and forward logs to a centralized SIEM for analysis
• Set up alerts for any external access attempts to the router's web management port
• Periodically audit the router's configuration and running processes for unauthorized changes

How to Mitigate CVE-2024-22729

Immediate Actions Required

• Restrict access to the router's web management interface to trusted IP addresses only
• Disable remote management access from the WAN interface immediately
• Place the router behind a firewall that filters malicious requests
• Consider replacing the affected device with a router from a vendor that provides regular security updates

Patch Information

No vendor patch information is currently available for this vulnerability. NETIS SYSTEMS has not published a security advisory or firmware update addressing CVE-2024-22729. Organizations using the affected MW5360 router should implement the workarounds below and consider device replacement if no patch becomes available.

Workarounds

• Disable the web management interface if not required for daily operations
• Implement network segmentation to isolate the router's management interface from untrusted networks
• Use a VPN to access the router's management interface rather than exposing it directly
• Deploy a reverse proxy with input validation rules in front of the management interface to filter malicious requests

# Example: Restrict management interface access using iptables on an upstream device
iptables -A INPUT -p tcp --dport 80 -s 192.168.1.100 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP