CVE-2019-19143 : Security Advisory and Response

TP-LINK TL-WR849N 0.9.1 4.16 devices are vulnerable to an authentication bypass when replacing firmware via a POST request to the cgi/softup URI.

Understanding CVE-2019-19143

This CVE identifies a security vulnerability in TP-LINK TL-WR849N 0.9.1 4.16 devices that allows unauthorized firmware replacement without authentication.

What is CVE-2019-19143?

The vulnerability in CVE-2019-19143 enables attackers to replace the firmware on affected devices without the need for authentication, potentially leading to unauthorized access and control.

The Impact of CVE-2019-19143

The exploitation of this vulnerability could result in unauthorized firmware modifications, compromising the security and integrity of the affected devices.

Technical Details of CVE-2019-19143

This section provides more in-depth technical insights into the CVE-2019-19143 vulnerability.

Vulnerability Description

The vulnerability allows attackers to perform firmware replacement on TP-LINK TL-WR849N 0.9.1 4.16 devices via a POST request to the cgi/softup URI without requiring authentication.

Affected Systems and Versions

Product: TP-LINK TL-WR849N 0.9.1 4.16
Vendor: TP-LINK
Version: 0.9.1 4.16

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a POST request to the cgi/softup URI, bypassing the authentication process and replacing the firmware on the affected devices.

Mitigation and Prevention

Protecting systems from CVE-2019-19143 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable remote access to the device if not required.
Monitor network traffic for any suspicious activities.
Apply vendor-supplied patches or updates promptly.

Long-Term Security Practices

Implement strong authentication mechanisms for device access.
Regularly update firmware and security configurations.

Patching and Updates

Check for firmware updates from TP-LINK and apply them as soon as they are available to mitigate the vulnerability.