Shell Injection via os.system() in get_user() - Critical

[zeropath-ai-dev]

Summary

This pull request addresses a critical security vulnerability in the get_user() function, where user-controlled input was being passed directly to os.system(). This allowed for potential shell injection attacks and remote code execution if an attacker supplied a malicious username. Such a vulnerability could be exploited to execute arbitrary commands on the server, leading to severe security risks.

fix

The unsafe call to os.system(username) was removed from the get_user() function. By eliminating this line, any possibility of shell injection via the username parameter is mitigated. The function now simply returns the username value, ensuring no command execution is performed with untrusted input. No business logic is impacted as the system call was unnecessary for the username handling.

author info

Fix authored by application security engineer to resolve a remote code execution vulnerability. Please reach out for additional security reviews or clarification on remediation steps.