Identify and explain the buffer-overflow or integer-overflow vulnerabilities in the following C code snippets, and give a corrected version of the code.

i char buf [20]; char prefixl] "http://". strcpy(buf, prefix); strncat (buf, path, sizeof (buf)); iichar buf [32]; strncpy(buf, data, strlen(data)); #define MAXBUF 256 void BadCode C UlY - short len; char buf [MAX_BUF]; len = strlen (input) ; if (len