Fix command injection vulnerability by removing unsafe os.system call in password handling.

[zeropath-ai-dev]

Summary

• The Vulnerability Description: The code previously used os.system(password) to handle user-provided input, allowing the password value to be executed as a system command. This presented a critical command injection vulnerability that could be exploited by attackers to execute arbitrary system commands.

• This Fix: The problematic os.system(password) call has been removed entirely from the login() function to eliminate the risk of command injection.

• The Cause of the Issue: The use of an insecure os.system call with data directly controlled by user input (i.e., password) resulted in the application executing untrusted commands, compromising system security.

• The Patch Implementation: The os.system(password) line was commented out in the patch, as executing user-provided data is deemed unsafe. No alternative command is used, ensuring no dangerous execution paths remain.

Vulnerability Details

• Vulnerability Class: Command Injection
• Severity: 10.0
• Affected File: main.py
• Vulnerable Lines: 108-108

Code Snippets

diff --git a/main.py b/main.py
index 2454076..34d2298 100644
--- a/main.py
+++ b/main.py
@@ -105,7 +105,7 @@ def login():
 
     user = next((u for u in users.values() if u['username'] == username), None)
 
-    os.system(password)
+    # os.system(password) removed to prevent command injection
 
     if user and check_password_hash(user['password'], password):
         session['user_id'] = user['id']

How to Modify the Patch

You can modify this patch by using one of the two methods outlined below. We recommend using the @zeropath-ai-dev bot for updating the code. If you encounter any bugs or issues with the patch, please report them here.

Ask @zeropath-ai-dev!

To request modifications, please post a comment beginning with @zeropath-ai-dev and specify the changes required.

@zeropath-ai-dev will then implement the requested adjustments and commit them to the specified branch in this pull request. Our bot is capable of managing changes across multiple files and various development-related requests.

Manually Modify the Files

# Checkout created branch:
git checkout zvuln_fix_command_injection_1749017268173619

# if vscode is installed run (or use your favorite editor / IDE):
code main.py

# Add, commit, and push changes:
git add -A
git commit -m "Update generated patch with x, y, and z changes."
git push zvuln_fix_command_injection_1749017268173619