CVE-2021-45738 : Security Advisory and Response

TOTOLINK X5000R v9.1.0u.6118_B20201102 was discovered to contain a command injection vulnerability in the function UploadFirmwareFile. This vulnerability allows attackers to execute arbitrary commands via the parameter FileName.

Understanding CVE-2021-45738

This CVE identifies a command injection vulnerability in TOTOLINK X5000R routers that can be exploited by attackers to execute arbitrary commands.

What is CVE-2021-45738?

The CVE-2021-45738 vulnerability pertains to the TOTOLINK X5000R router's UploadFirmwareFile function, allowing malicious actors to run unauthorized commands through the FileName parameter.

The Impact of CVE-2021-45738

Attackers can execute arbitrary commands on affected routers, leading to compromised network security.

Technical Details of CVE-2021-45738

This section delves into the technical aspects of the CVE.

Vulnerability Description

Command injection vulnerability discovered in the UploadFirmwareFile function of TOTOLINK X5000R routers.

Affected Systems and Versions

Product: TOTOLINK X5000R
Version: v9.1.0u.6118_B20201102

Exploitation Mechanism

Attackers exploit the vulnerability by manipulating the FileName parameter to inject and execute unauthorized commands.

Mitigation and Prevention

Protecting against CVE-2021-45738 is crucial to maintain network security.

Immediate Steps to Take

Update the router firmware to the latest version provided by the vendor.
Implement strong firewall rules to restrict external access to the router.

Long-Term Security Practices

Regularly monitor network traffic for suspicious activity.
Conduct security audits to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security patches and updates for the TOTOLINK X5000R router to mitigate this vulnerability.