CVE-2021-20697 : Vulnerability Insights and Analysis

This article provides detailed information about CVE-2021-20697, highlighting the vulnerability found in the DAP-1880AC firmware version 1.21 and earlier, allowing remote attackers to gain unauthorized access.

Understanding CVE-2021-20697

CVE-2021-20697 is a vulnerability identified in the DAP-1880AC firmware version 1.21 and earlier, enabling malicious actors to log in to the device as authenticated users without proper access privileges.

What is CVE-2021-20697?

The CVE-2021-20697 vulnerability involves missing authentication for critical functions in the DAP-1880AC firmware version 1.21 and earlier. It allows remote attackers to gain access to the device without the required access privileges through unspecified vectors.

The Impact of CVE-2021-20697

The impact of this vulnerability is severe as it permits unauthorized users to log in as authenticated users on the affected device, potentially leading to unauthorized access to sensitive information and manipulation of device settings.

Technical Details of CVE-2021-20697

This section outlines the technical aspects of CVE-2021-20697, including the vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in DAP-1880AC firmware version 1.21 and earlier arises from missing authentication for critical functions, allowing remote attackers to bypass access restrictions and gain unauthorized access to the device.

Affected Systems and Versions

Affected systems include DAP-1880AC devices running firmware version 1.21 and earlier. Users of these versions are at risk of exploitation by threat actors seeking unauthorized access.

Exploitation Mechanism

Remote attackers can exploit CVE-2021-20697 by leveraging the missing authentication for critical functions in the firmware of DAP-1880AC devices. Through unspecified vectors, attackers can gain unauthorized access to the device.

Mitigation and Prevention

To protect systems from CVE-2021-20697, it is crucial to follow immediate steps, implement long-term security practices, and apply relevant patches and updates.

Immediate Steps to Take

Immediate actions include restricting network access to vulnerable devices, monitoring for unauthorized logins, and implementing strong, unique passwords for device access.

Long-Term Security Practices

Practicing network segmentation, regular security audits, and ensuring timely firmware updates are essential long-term security measures to prevent unauthorized access to devices.

Patching and Updates

Vendors like D-Link Japan K.K. may release patches to address the CVE-2021-20697 vulnerability. It is crucial for users to apply these patches promptly to mitigate the risk of exploitation.