CVE-2021-41451 Explained : Impact and Mitigation

A misconfiguration in HTTP/1.0 and HTTP/1.1 of the web interface in TP-Link AX10v1 before V1_211117 allows a remote unauthenticated attacker to send a specially crafted HTTP request and receive a misconfigured HTTP/0.9 response, potentially leading into a cache poisoning attack.

Understanding CVE-2021-41451

This CVE involves a vulnerability in the web interface of TP-Link AX10v1 routers that could be exploited by a remote attacker.

What is CVE-2021-41451?

The CVE-2021-41451 vulnerability is a misconfiguration in the HTTP/1.0 and HTTP/1.1 protocols of the web interface in TP-Link AX10v1 routers.

The Impact of CVE-2021-41451

The vulnerability allows a remote unauthenticated attacker to trigger a cache poisoning attack by sending a specially crafted HTTP request and receiving a misconfigured HTTP/0.9 response.

Technical Details of CVE-2021-41451

This section provides more in-depth technical details of the CVE.

Vulnerability Description

The misconfiguration in the HTTP protocols of the web interface in TP-Link AX10v1 routers exposes them to a cache poisoning attack.

Affected Systems and Versions

Product: TP-Link AX10v1
Vendor: TP-Link
Versions: Before V1_211117

Exploitation Mechanism

The attacker can exploit this vulnerability by sending a specific HTTP request to the router, tricking it into responding with a misconfigured HTTP/0.9 response.

Mitigation and Prevention

It is crucial to take immediate steps to protect systems from this vulnerability.

Immediate Steps to Take

Disable remote access to the router's web interface if not required.
Regularly check for firmware updates from the vendor.
Monitor network traffic for any anomalous HTTP requests.

Long-Term Security Practices

Implement strong firewall rules to filter and block suspicious HTTP traffic.
Conduct regular security audits to identify and address any misconfigurations.

Patching and Updates

Apply the latest firmware updates provided by TP-Link to mitigate this vulnerability.