CVE-2021-44623 : Security Advisory and Response

A Buffer Overflow vulnerability exists in TP-LINK WR-886N 20190826 2.3.8 via the /cloud_config/router_post/check_reset_pwd_verify_code interface.

Understanding CVE-2021-44623

This CVE-2021-44623 affects TP-LINK WR-886N routers through a specific interface leading to a Buffer Overflow vulnerability.

What is CVE-2021-44623?

CVE-2021-44623 is a Buffer Overflow vulnerability found in TP-LINK WR-886N routers, specifically in version 2.3.8 through the /cloud_config/router_post/check_reset_pwd_verify_code interface.

The Impact of CVE-2021-44623

This vulnerability can potentially allow attackers to execute arbitrary code or crash the device, compromising its security and functionality.

Technical Details of CVE-2021-44623

This section provides technical insights into the CVE-2021-44623 vulnerability.

Vulnerability Description

The vulnerability arises due to a Buffer Overflow issue in TP-LINK WR-886N 20190826 version 2.3.8 when utilizing the /cloud_config/router_post/check_reset_pwd_verify_code interface.

Affected Systems and Versions

Affected Product: TP-LINK WR-886N
Affected Version: 20190826 2.3.8

Exploitation Mechanism

Attackers can exploit this vulnerability by sending malicious inputs through the /cloud_config/router_post/check_reset_pwd_verify_code interface.

Mitigation and Prevention

To protect systems from CVE-2021-44623, follow these mitigation strategies.

Immediate Steps to Take

Disable remote access to the affected router interface.
Implement strong password policies.
Regularly monitor network traffic for any suspicious activity.

Long-Term Security Practices

Keep routers updated with the latest firmware releases.
Conduct regular security audits on IoT devices.
Educate users about phishing attacks and social engineering tactics.

Patching and Updates

Ensure to update the TP-LINK WR-886N router firmware to the latest version to mitigate the Buffer Overflow vulnerability.