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CVE-2024-0299: Critical OS Command Injection Vulnerability in Totolink N200RE

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Overview

The vulnerability CVE-2024-0299 is a critical flaw discovered in Totolink N200RE 9.3.5u.6139_B20201216. This vulnerability impacts the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi. It allows attackers to execute arbitrary OS commands remotely, making it a significant security risk for any system dependent on the affected software.

Vulnerability Summary

CVE ID: CVE-2024-0299
Severity: Critical (CVSS: 7.3)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

Totolink N200RE | 9.3.5u.6139_B20201216

How the Exploit Works

The exploit works by manipulating the ‘command’ argument in the setTracerouteCfg function that resides in the /cgi-bin/cstecgi.cgi file. An attacker can inject and execute arbitrary operating system commands remotely. The execution of these commands can lead to unauthorized system access, potential system compromise, or data leakage.

Conceptual Example Code

Below is a conceptual example of an HTTP request that could potentially exploit this vulnerability:

POST /cgi-bin/cstecgi.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
setTracerouteCfg=1&command=any-os-command-here

In the above example, ‘any-os-command-here’ would be replaced with the specific command the attacker wishes to execute on the system. The arbitrary OS command is injected via the ‘command’ argument in the ‘setTracerouteCfg’ function.

Mitigation Guidance

To mitigate this vulnerability, apply the vendor patch as soon as it becomes available. In the meantime, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary mitigation. It is also recommended to monitor network traffic for any strange behavior or unauthorized access attempts.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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