CVE-2024-0296 Explained : Impact and Mitigation

This article discusses the critical vulnerability found in Totolink N200RE 9.3.5u.6139_B20201216 that allows for OS command injection through the NTPSyncWithHost function of the file /cgi-bin/cstecgi.cgi.

Understanding CVE-2024-0296

This CVE entry highlights a critical security flaw in the Totolink N200RE router, specifically in version 9.3.5u.6139_B20201216. The vulnerability enables remote attackers to exploit the NTPSyncWithHost function in /cgi-bin/cstecgi.cgi, leading to OS command injection.

What is CVE-2024-0296?

The CVE-2024-0296 vulnerability affects Totolink N200RE 9.3.5u.6139_B20201216, allowing malicious actors to execute arbitrary operating system commands through the manipulation of the "host_time" argument. This security issue has been classified as critical due to its potential impact.

The Impact of CVE-2024-0296

The impact of CVE-2024-0296 is significant as it enables attackers to remotely trigger OS command injection on affected systems. Exploiting this vulnerability can lead to unauthorized access, data exfiltration, or further compromise of the device and network it is connected to.

Technical Details of CVE-2024-0296

The following technical details provide insight into the vulnerability, affected systems, and exploitation mechanisms:

Vulnerability Description

The vulnerability in Totolink N200RE 9.3.5u.6139_B20201216 allows for OS command injection through the NTPSyncWithHost function of the file /cgi-bin/cstecgi.cgi. By manipulating the "host_time" argument, attackers can execute arbitrary commands on the system.

Affected Systems and Versions

The affected system is the Totolink N200RE router running version 9.3.5u.6139_B20201216. Users of this specific router version are at risk of exploitation if the necessary precautions are not taken.

Exploitation Mechanism

Remote attackers can initiate the exploitation of CVE-2024-0296 by sending crafted requests to the NTPSyncWithHost function in /cgi-bin/cstecgi.cgi. Through the manipulation of the "host_time" parameter, malicious commands can be injected and executed on the device.

Mitigation and Prevention

To address the CVE-2024-0296 vulnerability and enhance overall security posture, the following steps can be taken:

Immediate Steps to Take

Update the Totolink N200RE router to a patched version that addresses the OS command injection vulnerability.
Implement network segmentation and access controls to limit exposure to remote attacks.
Monitor network traffic for any suspicious activity targeting the NTPSyncWithHost function.

Long-Term Security Practices

Regularly update firmware and software to mitigate potential security risks.
Conduct security assessments and penetration testing to identify vulnerabilities proactively.
Educate users on safe browsing habits and security best practices to prevent exploitation.

Patching and Updates

Stay informed about security advisories from Totolink and promptly apply patches or updates released to address CVE-2024-0296. Regularly check for firmware updates for the N200RE router to ensure protection against known vulnerabilities.