CVE-2018-19240 : What You Need to Know

CVE-2018-19240 was published on December 20, 2018, and involves a buffer overflow vulnerability in network.cgi on TRENDnet TV-IP110WN and TV-IP121WN devices. Attackers can exploit this vulnerability to take control over the control flow and direct it to a location specified by the attacker through a crafted POST request payload.

Understanding CVE-2018-19240

This CVE entry highlights a critical security issue in TRENDnet devices that could lead to unauthorized control over the affected systems.

What is CVE-2018-19240?

The vulnerability allows attackers to perform a buffer overflow attack on specific builds of TRENDnet TV-IP110WN and TV-IP121WN devices. By exploiting this flaw, attackers can manipulate the control flow and execute arbitrary code without authentication.

The Impact of CVE-2018-19240

The exploitation of this vulnerability can result in severe consequences, including complete compromise of the affected devices, unauthorized access, and potential data breaches.

Technical Details of CVE-2018-19240

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The buffer overflow in network.cgi affects TRENDnet TV-IP110WN V1.2.2 build 68, V1.2.2.65, and V1.2.2 build 64, as well as TV-IP121WN V1.2.2 build 28 devices. Attackers can hijack the control flow by crafting a specific POST request payload.

Affected Systems and Versions

TRENDnet TV-IP110WN V1.2.2 build 68, V1.2.2.65, and V1.2.2 build 64
TRENDnet TV-IP121WN V1.2.2 build 28

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specially crafted POST request payload to the network.cgi script, enabling them to redirect the control flow to a location of their choice.

Mitigation and Prevention

Protecting systems from CVE-2018-19240 requires immediate action and long-term security measures.

Immediate Steps to Take

Apply security patches provided by TRENDnet promptly to address the vulnerability.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities that may indicate exploitation attempts.

Long-Term Security Practices

Regularly update and patch all network-connected devices to prevent known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.
Educate users and administrators about safe computing practices and the importance of cybersecurity awareness.

Patching and Updates

Regularly check for security updates and patches released by TRENDnet to mitigate the risk of exploitation and enhance the overall security posture of the affected devices.