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/capstats-0.29/capstats.cc

FINAL RESULTS:

data/capstats-0.29/capstats.cc:103:7:  [4] (format) vsnprintf:
  If format strings can be influenced by an attacker, they can be exploited,
  and note that sprintf variations do not always \0-terminate (CWE-134). Use
  a constant for the format specification.
	n += vsnprintf(buffer + n, SIZE - n, fmt, ap);
data/capstats-0.29/capstats.cc:528:17:  [3] (buffer) getopt_long:
  Some older implementations do not protect against internal buffer overflows
  (CWE-120, CWE-20). Check implementation on installation, or limit the size
  of all string inputs.
        int c = getopt_long (argc, argv, "df:i:I:n:Np:q:s:lvw:S:", long_options, 0);
data/capstats-0.29/capstats.cc:530:17:  [3] (buffer) getopt_long:
  Some older implementations do not protect against internal buffer overflows
  (CWE-120, CWE-20). Check implementation on installation, or limit the size
  of all string inputs.
        int c = getopt_long (argc, argv, "f:i:I:n:Np:q:s:lvw:S:", long_options, 0);
data/capstats-0.29/capstats.cc:99:12:  [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.
    static char buffer[SIZE];
data/capstats-0.29/capstats.cc:153:12:  [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.
    static char errbuf[PCAP_ERRBUF_SIZE];
data/capstats-0.29/capstats.cc:354:12:  [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.
    static char buffer[SIZE];
data/capstats-0.29/capstats.cc:550:24:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
            Interval = atoi(optarg);
data/capstats-0.29/capstats.cc:558:26:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
            NumberInts = atoi(optarg);
data/capstats-0.29/capstats.cc:567:23:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
            Payload = atoi(optarg);
data/capstats-0.29/capstats.cc:571:21:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
            Quiet = atoi(optarg);
data/capstats-0.29/capstats.cc:576:20:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
            Size = atoi(optarg);
data/capstats-0.29/capstats.cc:580:23:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
            SnapLen = atoi(optarg);
data/capstats-0.29/capstats.cc:105:5:  [1] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused). Risk is low because the
  source is a constant character.
    strcat(buffer + n, "\n");

ANALYSIS SUMMARY:

Hits = 13
Lines analyzed = 649 in approximately 0.05 seconds (12206 lines/second)
Physical Source Lines of Code (SLOC) = 498
Hits@level = [0]  11 [1]   1 [2]   9 [3]   2 [4]   1 [5]   0
Hits@level+ = [0+]  24 [1+]  13 [2+]  12 [3+]   3 [4+]   1 [5+]   0
Hits/KSLOC@level+ = [0+] 48.1928 [1+] 26.1044 [2+] 24.0964 [3+] 6.0241 [4+] 2.00803 [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.