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CVE-2024-0295: Critical OS Command Injection Vulnerability in Totolink LR1200GB

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Overview

A critical security vulnerability identified as CVE-2024-0295, has been discovered in the popular networking device Totolink LR1200GB. This vulnerability can be exploited remotely and can potentially lead to system compromise or leakage of sensitive data. It is a matter of significant concern due to the widespread use of Totolink devices and the high severity of the potential impact.

Vulnerability Summary

CVE ID: CVE-2024-0295
Severity: Critical (7.3 CVSS Score)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage

Affected Products

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Product | Affected Versions

Totolink LR1200GB | 9.1.0u.6619_B20230130

How the Exploit Works

The vulnerability resides in the ‘setWanCfg’ function of the ‘/cgi-bin/cstecgi.cgi’ file. Malicious actors can manipulate the ‘hostName’ argument to induce an operating system command injection. This injection can allow an attacker to execute arbitrary commands on the system, potentially leading to full system compromise or data leakage.

Conceptual Example Code

The following is a conceptual example showing how this vulnerability might be exploited. Note that the actual code will depend on the specific system configuration and the attacker’s objective.

POST /cgi-bin/cstecgi.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
setWanCfg=1&hostName=;rm+-rf+/;#

In this example, the attacker uses a semi-colon to terminate the ‘hostName’ argument, followed by a malicious command (‘rm -rf /’ in this case, which deletes all files in the Unix-like system) that will be executed on the server-side.

Remediation

As the vendor has not yet responded with a patch or update to fix this vulnerability, it is recommended to use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to mitigate the risk temporarily. Monitor the vendor’s communication channels for updates and apply patches as soon as they become available.

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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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