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/ruby-ldap-0.9.20/rbldap.h
Examining data/ruby-ldap-0.9.20/clientauth.c
Examining data/ruby-ldap-0.9.20/misc.c
Examining data/ruby-ldap-0.9.20/mod.c
Examining data/ruby-ldap-0.9.20/entry.c
Examining data/ruby-ldap-0.9.20/conn.c
Examining data/ruby-ldap-0.9.20/win/winldap.h
Examining data/ruby-ldap-0.9.20/win/winlber.h
Examining data/ruby-ldap-0.9.20/saslconn.c
Examining data/ruby-ldap-0.9.20/ldap.c
Examining data/ruby-ldap-0.9.20/sslconn.c

FINAL RESULTS:

data/ruby-ldap-0.9.20/clientauth.c:555:5:  [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.
    vsnprintf(buf, sizeof(buf) - 1, format, ap);
data/ruby-ldap-0.9.20/entry.c:306:3:  [4] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf.
  sprintf (RSTRING_PTR (str), "#<%s:0x%lx\n", c, self);
data/ruby-ldap-0.9.20/mod.c:58:3:  [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(mod->mod_type, mod_type);
data/ruby-ldap-0.9.20/mod.c:90:3:  [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(mod->mod_type, mod_type);
data/ruby-ldap-0.9.20/mod.c:284:3:  [4] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf.
  sprintf (RSTRING_PTR (str), "#<%s:0x%lx ", c, self);
data/ruby-ldap-0.9.20/clientauth.c:227:27:  [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).
                pw_secs = atoi(ctrls[i]->ldctl_value.bv_val);
data/ruby-ldap-0.9.20/clientauth.c:551:12:  [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 buf[512] = "";
data/ruby-ldap-0.9.20/conn.c:91:7:  [2] (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). Risk is low because the source is a constant string.
      strcpy (chost, "localhost");
data/ruby-ldap-0.9.20/conn.c:148:7:  [2] (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). Risk is low because the source is a constant string.
      strcpy (chost, "localhost");
data/ruby-ldap-0.9.20/misc.c:116:3:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
  memcpy (copy_ctl, orig_ctl, (size_t) sizeof (LDAPControl));
data/ruby-ldap-0.9.20/rbldap.h:38:4:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
   memcpy(var, RSTRING_PTR(val), RSTRING_LEN(val) + 1); \
data/ruby-ldap-0.9.20/sslconn.c:50:7:  [2] (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). Risk is low because the source is a constant string.
      strcpy (chost, "localhost");
data/ruby-ldap-0.9.20/sslconn.c:147:7:  [2] (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). Risk is low because the source is a constant string.
      strcpy (chost, "localhost");
data/ruby-ldap-0.9.20/sslconn.c:217:7:  [2] (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). Risk is low because the source is a constant string.
      strcpy (chost, "localhost");
data/ruby-ldap-0.9.20/conn.c:90:31:  [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).
      chost = ALLOCA_N (char, strlen ("localhost") + 1);
data/ruby-ldap-0.9.20/conn.c:147:31:  [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).
      chost = ALLOCA_N (char, strlen ("localhost") + 1);
data/ruby-ldap-0.9.20/entry.c:305:24:  [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).
  str = rb_str_new (0, strlen (c) + 10 + 16 + 1);	/* 10:tags 16:addr 1:nul */
data/ruby-ldap-0.9.20/entry.c:309:23:  [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).
  RSTRING(str)->len = strlen (RSTRING_PTR (str));
data/ruby-ldap-0.9.20/entry.c:311:23:  [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).
  rb_str_set_len(str, strlen (RSTRING_PTR (str)));
data/ruby-ldap-0.9.20/mod.c:57:32:  [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).
  mod->mod_type = ALLOC_N(char,strlen(mod_type) + 1);
data/ruby-ldap-0.9.20/mod.c:89:32:  [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).
  mod->mod_type = ALLOC_N(char,strlen(mod_type) + 1);
data/ruby-ldap-0.9.20/mod.c:283:24:  [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).
  str = rb_str_new (0, strlen (c) + 10 + 16 + 1);	/* 10:tags 16:addr 1:nul */
data/ruby-ldap-0.9.20/mod.c:287:23:  [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).
  RSTRING(str)->len = strlen (RSTRING_PTR (str));
data/ruby-ldap-0.9.20/mod.c:289:23:  [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).
  rb_str_set_len(str, strlen (RSTRING_PTR (str)));
data/ruby-ldap-0.9.20/saslconn.c:78:30:  [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).
          interact->len    = strlen(dflt);
data/ruby-ldap-0.9.20/sslconn.c:49:31:  [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).
      chost = ALLOCA_N (char, strlen ("localhost") + 1);
data/ruby-ldap-0.9.20/sslconn.c:146:31:  [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).
      chost = ALLOCA_N (char, strlen ("localhost") + 1);
data/ruby-ldap-0.9.20/sslconn.c:216:31:  [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).
      chost = ALLOCA_N (char, strlen ("localhost") + 1);

ANALYSIS SUMMARY:

Hits = 28
Lines analyzed = 5557 in approximately 0.12 seconds (44707 lines/second)
Physical Source Lines of Code (SLOC) = 4099
Hits@level = [0]  13 [1]  14 [2]   9 [3]   0 [4]   5 [5]   0
Hits@level+ = [0+]  41 [1+]  28 [2+]  14 [3+]   5 [4+]   5 [5+]   0
Hits/KSLOC@level+ = [0+] 10.0024 [1+] 6.83093 [2+] 3.41547 [3+] 1.21981 [4+] 1.21981 [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.