CVE-2021-45876 Explained : Impact and Mitigation

Multiple versions of GARO Wallbox GLB/GTB/GTC are affected by unauthenticated command injection vulnerability which allows remote attackers to execute arbitrary commands.

Understanding CVE-2021-45876

What is CVE-2021-45876?

Multiple versions of GARO Wallbox GLB/GTB/GTC are vulnerable to unauthenticated command injection where user input is not properly sanitized before execution, leading to potential code execution.

The Impact of CVE-2021-45876

The vulnerability allows remote attackers to inject and execute arbitrary commands on affected systems, posing a significant security risk to the integrity and confidentiality of the firmware.

Technical Details of CVE-2021-45876

Vulnerability Description

The url parameter of the function module 'downloadAndUpdate' is susceptible to command injection due to improper input validation.

Affected Systems and Versions

Product: GARO Wallbox GLB/GTB/GTC
Versions: All versions are impacted

Exploitation Mechanism

Attackers exploit the unauthenticated command injection by manipulating the url parameter to insert malicious commands, which are then executed during firmware downloads.

Mitigation and Prevention

Immediate Steps to Take

Implement vendor-supplied patches immediately to fix the vulnerability
Avoid exposing affected systems to untrusted networks

Long-Term Security Practices

Regularly update and patch the firmware of GARO Wallbox devices
Conduct security assessments and audits to identify and address vulnerabilities

Patching and Updates

Check for firmware updates regularly on the vendor's official website and apply them promptly to eliminate the command injection vulnerability.