CVE-2019-6487 : Vulnerability Insights and Analysis

TP-Link WDR Series devices with firmware v3 are vulnerable to command injection, allowing remote code execution post-login.

Understanding CVE-2019-6487

What is CVE-2019-6487?

The vulnerability in TP-Link WDR Series devices, particularly those with firmware v3, enables remote code execution due to command injection in the citycode field of the weather get_weather_observe feature.

The Impact of CVE-2019-6487

This vulnerability can be exploited by attackers to execute arbitrary commands on the affected devices, potentially leading to unauthorized access and control.

Technical Details of CVE-2019-6487

Vulnerability Description

The vulnerability arises from the inclusion of shell metacharacters in the citycode field, allowing attackers to inject and execute malicious commands remotely.

Affected Systems and Versions

TP-Link WDR Series devices with firmware v3, such as TL-WDR5620 V3.0

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the citycode field in the weather get_weather_observe feature to inject malicious commands and achieve remote code execution.

Mitigation and Prevention

Immediate Steps to Take

Disable remote access to the affected devices if not required
Implement strong and unique passwords for device access
Regularly monitor and audit device logs for any suspicious activities

Long-Term Security Practices

Keep devices up to date with the latest firmware releases
Conduct regular security assessments and penetration testing to identify and address vulnerabilities

Patching and Updates

Apply security patches provided by TP-Link promptly to mitigate the vulnerability