CVE-2020-7504 : Exploit Details and Defense Strategies

A CWE-20 vulnerability in Easergy T300 (Firmware version 1.5.2 and older) could allow attackers to disable the webserver service on the device.

Understanding CVE-2020-7504

This CVE identifies a specific vulnerability in the Easergy T300 device.

What is CVE-2020-7504?

CVE-2020-7504 is a CWE-20: Improper Input Validation vulnerability in Easergy T300 (Firmware version 1.5.2 and older) that enables attackers to disrupt the webserver service by sending crafted network packets.

The Impact of CVE-2020-7504

The vulnerability allows attackers to potentially disable critical webserver services on affected devices, leading to service disruption and potential security breaches.

Technical Details of CVE-2020-7504

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability stems from improper input validation in Easergy T300 (Firmware version 1.5.2 and older), enabling attackers to exploit the device's webserver service.

Affected Systems and Versions

Product: Easergy T300 (Firmware version 1.5.2 and older)

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted network packets to the device, triggering the improper input validation flaw.

Mitigation and Prevention

Protecting systems from CVE-2020-7504 requires immediate action and long-term security measures.

Immediate Steps to Take

Update the firmware to a version that addresses the vulnerability.
Implement network segmentation to limit exposure.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update firmware and security patches.
Conduct security assessments and penetration testing.
Educate users on safe network practices.
Employ intrusion detection and prevention systems.
Follow security best practices and guidelines.

Patching and Updates

Ensure that all devices running Easergy T300 are updated to a secure firmware version that patches the CWE-20 vulnerability.