Create two different unique and complete demonstrations of Risky Resource Management such as:

Buffer Copy without Checking the Size of Input, Improper Limitation of a Pathname to a Restricted Directory, Download of Code Without Integrity Check, Inclusion of Functionality from an Untrusted Control Sphere, Use of Potentially Dangerous Function, Incorrect Calculation of Buffer Size, Uncontrolled Format String, and Integer Overflow or Wraparound. Provide unique code that contains the vulnerability and then provide an updated version of the code that fixes the vulnerability. Also, describe why the original code was vulnerable and discuss specific attack methods a user could try to exploit the vulnerability. Finally, discuss how the new code fixes the vulnerability.