实验平台：
x86_64, Ubuntu 18.04.6 LTS, Kernel 4.15.0-170-generic
GLIBC 2.27-3ubuntu1.5实验Binary及答案：https://github.com/bjrjk/pwn-learning/tree/main/IO_FILE/io_leak
ELF安全性：
Arch: amd64-64-little
RELRO: Full RELRO
Stack: Canary found
NX: NX enabled
PIE: PIE enabledamd64体系结构，保护全开。