The following code is for security research and authorized testing only.
python
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// Simulated vulnerable structure
typedef struct {
int id;
char data[64];
} CommModule;
void vulnerable_function() {
// Allocate memory for the communication object
CommModule *msg = (CommModule *)malloc(sizeof(CommModule));
if (!msg) return;
msg->id = 1;
strcpy(msg->data, "Critical Information");
printf("[+] Object allocated. ID: %d, Data: %s\n", msg->id, msg->data);
// VULNERABILITY: Free the object
free(msg);
printf("[-] Object memory freed.\n");
// VULNERABILITY: Use after free occurs here
// If an attacker can reallocate this memory, they can control the output or crash the system
if (msg->id == 1) {
printf("[!] UAF Triggered! Data: %s\n", msg->data);
}
}
int main() {
vulnerable_function();
return 0;
}