CVE-2018-19537 : Vulnerability Insights and Analysis

Remote command execution vulnerability on TP-Link Archer C5 devices with the V2_160201_US firmware.

Understanding CVE-2018-19537

What is CVE-2018-19537?

Remote command execution can be achieved on TP-Link Archer C5 devices with specific firmware versions by exploiting shell metacharacters in an encrypted configuration file uploaded through the web GUI.

The Impact of CVE-2018-19537

This vulnerability allows attackers to execute commands remotely on affected devices, potentially leading to unauthorized access and control.

Technical Details of CVE-2018-19537

Vulnerability Description

The flaw resides in the handling of the wan_dyn_hostname line in an encrypted configuration file, allowing malicious actors to execute arbitrary commands.

Affected Systems and Versions

TP-Link Archer C5 devices with the V2_160201_US firmware

Exploitation Mechanism

Utilizing shell metacharacters on the wan_dyn_hostname line of an encrypted configuration file
Uploading the file through the web GUI using the web admin account
Default password 'admin' may be used for authentication

Mitigation and Prevention

Immediate Steps to Take

Update the firmware to the latest version provided by TP-Link
Change default passwords and use strong, unique credentials
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update firmware and software on all network devices
Implement network segmentation and access controls to limit exposure

Patching and Updates

Apply security patches and updates promptly to address known vulnerabilities