CVE-2021-28857 : Vulnerability Insights and Analysis

TP-Link's TL-WPA4220 4.0.2 Build 20180308 Rel.37064 sends username and password via a cookie, potentially exposing sensitive information.

Understanding CVE-2021-28857

This CVE involves the disclosure of credentials in an insecure manner by TP-Link's TL-WPA4220 version 4.0.2 Build 20180308 Rel.37064.

What is CVE-2021-28857?

The vulnerability in TP-Link's TL-WPA4220 4.0.2 allows usernames and passwords to be transmitted through cookies in cleartext, risking unauthorized access to sensitive information.

The Impact of CVE-2021-28857

With this vulnerability, attackers can intercept and exploit transmitted credentials, potentially leading to unauthorized access to the system and sensitive data.

Technical Details of CVE-2021-28857

This section will cover the Vulnerability Description, Affected Systems and Versions, and Exploitation Mechanism in more detail.

Vulnerability Description

The vulnerability in TP-Link's TL-WPA4220 4.0.2 exposes usernames and passwords by transmitting them in plaintext via cookies, creating a security risk for users.

Affected Systems and Versions

TP-Link's TL-WPA4220 version 4.0.2 Build 20180308 Rel.37064 is specifically impacted by this vulnerability, potentially affecting users of this particular firmware version.

Exploitation Mechanism

Attackers can exploit this vulnerability by intercepting network traffic containing the cleartext username and password transmitted via cookies, enabling unauthorized access.

Mitigation and Prevention

To address CVE-2021-28857, users should take immediate steps to secure their systems and implement long-term security practices to prevent future vulnerabilities.

Immediate Steps to Take

Users should update their TP-Link TL-WPA4220 firmware to a secure version, avoid transmitting sensitive information over unsecured networks, and change default usernames and passwords.

Long-Term Security Practices

Implement security best practices such as using strong, unique passwords, enabling encryption on networks, and regularly updating firmware and software.

Patching and Updates

TP-Link may release patches or updates to address this vulnerability. Users should regularly check for firmware updates and apply them promptly to secure their devices.