Flawfinder version 2.0.10, (C) 2001-2019 David A. Wheeler.
Number of rules (primarily dangerous function names) in C/C++ ruleset: 223
Examining data/libnet-arp-perl-1.0.11/get_mac_linux.c
Examining data/libnet-arp-perl-1.0.11/arp.h
Examining data/libnet-arp-perl-1.0.11/arp_lookup_bsd.c
Examining data/libnet-arp-perl-1.0.11/ppport.h
Examining data/libnet-arp-perl-1.0.11/get_mac_bsd.c
Examining data/libnet-arp-perl-1.0.11/send_packet_bsd.c
Examining data/libnet-arp-perl-1.0.11/arp_lookup_linux.c
Examining data/libnet-arp-perl-1.0.11/send_packet_linux.c

FINAL RESULTS:

data/libnet-arp-perl-1.0.11/arp_lookup_bsd.c:88:4:  [4] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf.
	  sprintf(mac,"%s", ether_ntoa((struct ether_addr *)LLADDR(sdl)));
data/libnet-arp-perl-1.0.11/arp_lookup_linux.c:84:9:  [4] (buffer) strcpy:
  Does not check for buffer overflows when copying to destination [MS-banned]
  (CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
  easily misused).
        strcpy(areq.arp_dev, device);
data/libnet-arp-perl-1.0.11/get_mac_bsd.c:56:8:  [4] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf.
	      sprintf(mac, "%s",
data/libnet-arp-perl-1.0.11/arp_lookup_linux.c:91:13:  [2] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf. Risk is low because the source has a constant maximum length.
            sprintf(hw_addr, "%02x:%02x:%02x:%02x:%02x:%02x",
data/libnet-arp-perl-1.0.11/get_mac_linux.c:64:4:  [2] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf. Risk is low because the source has a constant maximum length.
	  sprintf(mac,"%02x:%02x:%02x:%02x:%02x:%02x",
data/libnet-arp-perl-1.0.11/send_packet_bsd.c:32:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char bpfdev[12];
data/libnet-arp-perl-1.0.11/send_packet_bsd.c:41:7:  [2] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf. Risk is low because the source has a constant maximum length.
      sprintf(bpfdev,"/dev/bpf%d",i);
data/libnet-arp-perl-1.0.11/send_packet_bsd.c:42:19:  [2] (misc) open:
  Check when opening files - can an attacker redirect it (via symlinks),
  force the opening of special file type (e.g., device files), move things
  around to create a race condition, control its ancestors, or change its
  contents? (CWE-362).
      if((bpffd = open(bpfdev,O_WRONLY)) > 0)
data/libnet-arp-perl-1.0.11/arp_lookup_bsd.c:46:3:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120). Risk is low because the source is a
  constant string.
  strncpy(mac,"unknown", HEX_HW_ADDR_LEN);
data/libnet-arp-perl-1.0.11/arp_lookup_linux.c:58:11:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
    if ( !strlen(device) || (strlen(device) >= 16) )
data/libnet-arp-perl-1.0.11/arp_lookup_linux.c:58:30:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
    if ( !strlen(device) || (strlen(device) >= 16) )
data/libnet-arp-perl-1.0.11/arp_lookup_linux.c:66:16:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
    else if ( !strlen(ip) || (inet_aton(ip, &ipaddr) == 0) )
data/libnet-arp-perl-1.0.11/get_mac_bsd.c:42:3:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120). Risk is low because the source is a
  constant string.
  strncpy(mac,"unknown", HEX_HW_ADDR_LEN);
data/libnet-arp-perl-1.0.11/get_mac_linux.c:35:9:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  if ( !strlen(mac) || !strlen(dev) )
data/libnet-arp-perl-1.0.11/get_mac_linux.c:35:25:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  if ( !strlen(mac) || !strlen(dev) )
data/libnet-arp-perl-1.0.11/get_mac_linux.c:39:3:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120). Risk is low because the source is a
  constant string.
  strncpy(mac,"unknown", HEX_HW_ADDR_LEN);
data/libnet-arp-perl-1.0.11/get_mac_linux.c:44:3:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
  strncpy(iface.ifr_name, dev, IFNAMSIZ);
data/libnet-arp-perl-1.0.11/ppport.h:699:22:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
        STRLEN len = strlen(radix);
data/libnet-arp-perl-1.0.11/send_packet_bsd.c:34:8:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  if( (strlen(dev) == 0) ||
data/libnet-arp-perl-1.0.11/send_packet_linux.c:35:6:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  if(strlen(dev) == 0)
data/libnet-arp-perl-1.0.11/send_packet_linux.c:55:3:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
  strncpy(addr.sa_data,dev,sizeof(addr.sa_data));

ANALYSIS SUMMARY:

Hits = 21
Lines analyzed = 1464 in approximately 0.06 seconds (26250 lines/second)
Physical Source Lines of Code (SLOC) = 910
Hits@level = [0]   5 [1]  13 [2]   5 [3]   0 [4]   3 [5]   0
Hits@level+ = [0+]  26 [1+]  21 [2+]   8 [3+]   3 [4+]   3 [5+]   0
Hits/KSLOC@level+ = [0+] 28.5714 [1+] 23.0769 [2+] 8.79121 [3+] 3.2967 [4+] 3.2967 [5+]   0
Dot directories skipped = 1 (--followdotdir overrides)
Minimum risk level = 1
Not every hit is necessarily a security vulnerability.
There may be other security vulnerabilities; review your code!
See 'Secure Programming HOWTO'
(https://dwheeler.com/secure-programs) for more information.