150 ASCII data connection established.
=================================================================
==25118==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x62100000c8ff at pc 0x55862bf3cc06 bp 0x7ffcbb8b82c0 sp 0x7ffcbb8b82b0
WRITE of size 1 at 0x62100000c8ff thread T0
    #0 0x55862bf3cc05  (/home/antonio/Downloads/bftpd/bftpd+0x39c05)
    #1 0x55862bf3c1db  (/home/antonio/Downloads/bftpd/bftpd+0x391db)
    #2 0x55862bf41b58  (/home/antonio/Downloads/bftpd/bftpd+0x3eb58)
    #3 0x55862bf4d69c  (/home/antonio/Downloads/bftpd/bftpd+0x4a69c)
    #4 0x7f29a28ffb6a  (/lib/x86_64-linux-gnu/libc.so.6+0x26b6a)
    #5 0x55862bf35929  (/home/antonio/Downloads/bftpd/bftpd+0x32929)

0x62100000c8ff is located 1 bytes to the left of 4097-byte region [0x62100000c900,0x62100000d901)
allocated by thread T0 here:
    #0 0x7f29a3572448  (/usr/lib/x86_64-linux-gnu/libasan.so.5+0x10c448)
    #1 0x55862bf3ca84  (/home/antonio/Downloads/bftpd/bftpd+0x39a84)
    #2 0x55862bf3c1db  (/home/antonio/Downloads/bftpd/bftpd+0x391db)
    #3 0x55862bf41b58  (/home/antonio/Downloads/bftpd/bftpd+0x3eb58)
    #4 0x55862bf4d69c  (/home/antonio/Downloads/bftpd/bftpd+0x4a69c)
    #5 0x7f29a28ffb6a  (/lib/x86_64-linux-gnu/libc.so.6+0x26b6a)

SUMMARY: AddressSanitizer: heap-buffer-overflow (/home/antonio/Downloads/bftpd/bftpd+0x39c05) 
Shadow bytes around the buggy address:
  0x0c427fff98c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c427fff98d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c427fff98e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c427fff98f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c427fff9900: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c427fff9910: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa[fa]
  0x0c427fff9920: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c427fff9930: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c427fff9940: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c427fff9950: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c427fff9960: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==25118==ABORTING