Fix OS Command Injection vulnerability by removing insecure os.system() call with unsanitized user input.

[zeropath-ai-dev]

Summary

• The Vulnerability Description: The application was susceptible to OS Command Injection due to the use of os.system() with unsanitized user-controlled input (username). This flaw could allow attackers to execute arbitrary shell commands on the server, leading to severe security risks such as data compromise and system takeover.

• This Fix: The patch removes the vulnerable os.system(username) call entirely, eliminating the possibility of command injection. This ensures user-controlled inputs cannot manipulate operating system commands.

• The Cause of the Issue: The issue arose because the code directly trusted and executed input received from users (username) without validation or sanitization, exposing the application to exploitation.

• The Patch Implementation: The os.system(username) call was removed in the patched code. This prevents any execution of shell commands based on user-provided input, addressing the vulnerability effectively.

Vulnerability Details

• Vulnerability Class: Command Injection
• Severity: 10.0
• Affected File: main.py
• Vulnerable Lines: 83-83

Code Snippets

diff --git a/main.py b/main.py
index 55c345d..2150d90 100644
--- a/main.py
+++ b/main.py
@@ -80,7 +80,7 @@ def get_user():
     username = data.get('username')
 
     
-    os.system(username)
+    # Removed os.system(username) call to prevent command injection
 
     return username, 200
 

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_1749764259863225

# 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_1749764259863225

[r0path]

@zeropath-ai what does this patch do?

[zeropath-ai]

The patch removes the insecure call to os.system(username) in the get_user() function to prevent command injection vulnerabilities. The line executing the os.system() function is replaced with a comment indicating its removal. This change mitigates the risk of executing arbitrary shell commands based on input from the client, making the endpoint safer.

[r0path]

@zeropath-ai-dev what does this patch do?

[r0path]

@zeropath-ai-dev what does this patch do?