CVE-2020-19318 : Security Advisory and Response

A Buffer Overflow vulnerability in D-Link DIR-605L, hardware version AX, firmware version 1.17beta and below, allows attackers to execute arbitrary code via crafted data.

Understanding CVE-2020-19318

This CVE identifies a specific vulnerability in the D-Link DIR-605L router that can be exploited by attackers to run arbitrary code.

What is CVE-2020-19318?

The CVE-2020-19318 is a Buffer Overflow vulnerability found in the D-Link DIR-605L router, specifically affecting hardware version AX and firmware version 1.17beta and earlier. This flaw enables authorized attackers to execute arbitrary code by sending manipulated data to the webserver service program.

The Impact of CVE-2020-19318

The exploitation of this vulnerability can lead to severe consequences, including unauthorized remote code execution on the affected device, potentially compromising the security and integrity of the network.

Technical Details of CVE-2020-19318

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises due to a lack of proper input validation in the webserver service program of the D-Link DIR-605L router, leading to a buffer overflow condition when processing crafted data.

Affected Systems and Versions

Vendor: D-Link
Product: DIR-605L
Hardware Version: AX
Firmware Versions Affected: 1.17beta and below

Exploitation Mechanism

Attackers with authorized access can exploit this vulnerability by sending specially crafted data to the webserver service program, triggering a buffer overflow and potentially executing arbitrary code on the target device.

Mitigation and Prevention

Protecting systems from CVE-2020-19318 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable remote access to the affected device if not required
Implement network segmentation to limit the impact of a successful exploit
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities
Conduct security assessments and penetration testing to identify and address weaknesses

Patching and Updates

Check for firmware updates from D-Link to address the Buffer Overflow vulnerability
Apply patches promptly to ensure the security of the D-Link DIR-605L router