CVE-2021-44632 : Vulnerability Insights and Analysis

A Buffer Overflow vulnerability in TP-LINK WR-886N 20190826 2.3.8 allows attackers to execute arbitrary code via a crafted post request.

Understanding CVE-2021-44632

What is CVE-2021-44632?

This CVE refers to a Buffer Overflow vulnerability in the /cloud_config/router_post/upgrade_info feature of TP-LINK WR-886N 20190826 2.3.8, enabling malicious actors to run arbitrary code on the system.

The Impact of CVE-2021-44632

This vulnerability can be exploited by attackers to execute unauthorized code on the affected system, potentially leading to a complete system compromise or unauthorized access.

Technical Details of CVE-2021-44632

Vulnerability Description

The Buffer Overflow vulnerability in TP-LINK WR-886N 20190826 2.3.8 occurs in the /cloud_config/router_post/upgrade_info feature, permitting threat actors to execute arbitrary code via a specially crafted post request.

Affected Systems and Versions

Systems: TP-LINK WR-886N 20190826 2.3.8
Versions: Not applicable

Exploitation Mechanism

Attackers exploit the vulnerability by sending a maliciously crafted post request to the affected feature, enabling the execution of unauthorized code on the system.

Mitigation and Prevention

Immediate Steps to Take

Disable remote access to the /cloud_config/router_post/upgrade_info feature if not essential.
Implement proper input validation checks on incoming requests to prevent buffer overflow.
Monitor network traffic for any suspicious activity that could indicate an exploitation attempt.

Long-Term Security Practices

Regularly update firmware and security patches provided by the vendor.
Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Apply the latest patches and updates from TP-LINK to address this vulnerability promptly.