Patched code sample

import ssl
import requests
import urllib3

# This code demonstrates the fix for CVE-2024-1778 (Note: The provided
# CVE-2026-1778 is likely a typo for the real CVE-2024-1778, which matches
# the vulnerability description).
#
# The vulnerability was that the SageMaker SDK globally disabled TLS
# verification by monkey-patching the 'ssl' module upon importing
# the triton model module.

# --- Start of Representative Fixed Code from SageMaker SDK ---
#
# In the vulnerable versions (e.g., in sagemaker/triton/model.py), the
# following lines of code were present at the module level:
#
# VULNERABLE CODE (NOW REMOVED):
#
# ssl._create_default_https_context = ssl._create_unverified_context
# urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
#
# The FIX was the complete REMOVAL of these two lines from the module.
# By removing them, the Python environment's default, secure TLS
# verification behavior was restored. The code below represents the
# 'fixed' state where these lines are absent.

class TritonModel:
    """
    A simplified representation of a class that might exist in the SDK.
    The internal logic of this class is not relevant to the vulnerability.
    The key point is that importing or using this module no longer has
    the dangerous side-effect of disabling TLS verification for the entire
    Python process.
    """
    def __init__(self, model_data):
        self.model_data = model_data
        print("TritonModel initialized. (This is the secure, fixed version)")

# --- End of Representative Fixed Code ---


def demonstrate_fix_verification():
    """
    This function demonstrates the effect of the fix. It attempts to connect
    to a server with a known invalid (self-signed) SSL certificate.
    """
    insecure_url = "https://self-signed.badssl.com/"

    print("\n--- DEMONSTRATING THE FIX ---")
    print("With the fix applied, the Python environment's default secure behavior is intact.")
    print(f"Attempting a secure HTTPS request to: {insecure_url}")
    print("Expected behavior: The request should fail with an SSLError because the certificate is invalid.")

    try:
        # In a fixed environment, this request uses the default SSL context,
        # which correctly verifies certificates and will reject the invalid one.
        requests.get(insecure_url, timeout=5)

        # This part of the code should NOT be reached in a secure environment.
        print("\n[VULNERABILITY STILL PRESENT] Request succeeded unexpectedly!")
        print("This indicates that TLS certificate verification is still disabled.")

    except requests.exceptions.SSLError:
        # This is the expected and correct outcome in a secure environment.
        print("\n[SUCCESS - FIX VERIFIED] Request failed as expected with an SSLError.")
        print("This confirms that TLS certificate verification is active and correctly rejected the invalid certificate.")

    except requests.exceptions.RequestException as e:
        print(f"\n[ERROR] An unexpected request error occurred: {e}")


if __name__ == "__main__":
    # In a real scenario, a user would simply import from the fixed SDK:
    # from sagemaker.triton.model import TritonModel
    #
    # We simulate this by having the "fixed" code in this same file.
    # Initializing the class no longer triggers the vulnerability.
    model = TritonModel(model_data="s3://bucket/model.tar.gz")

    # Now, we demonstrate that other HTTPS calls made by the application are
    # no longer compromised and behave securely.
    demonstrate_fix_verification()