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/authbind-2.1.2/authbind.c
Examining data/authbind-2.1.2/authbind.h
Examining data/authbind-2.1.2/helper.c
Examining data/authbind-2.1.2/libauthbind.c

FINAL RESULTS:

data/authbind-2.1.2/authbind.c:78:5:  [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(newpreload,expreload);
data/authbind-2.1.2/authbind.c:80:5:  [4] (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).
    strcat(newpreload,authbindlib);
data/authbind-2.1.2/authbind.c:96:3:  [4] (shell) execvp:
  This causes a new program to execute and is difficult to use safely
  (CWE-78). try using a library call that implements the same functionality
  if available.
  execvp(argv[1],argv+1);
data/authbind-2.1.2/helper.c:66:8:  [4] (race) access:
  This usually indicates a security flaw. If an attacker can change anything
  along the path between the call to access() and the file's actual use
  (e.g., by moving files), the attacker can exploit the race condition
  (CWE-362/CWE-367!). Set up the correct permissions (e.g., using setuid())
  and try to open the file directly.
  if (!access(file,X_OK)) authorised();
data/authbind-2.1.2/helper.c:138:8:  [4] (race) access:
  This usually indicates a security flaw. If an attacker can change anything
  along the path between the call to access() and the file's actual use
  (e.g., by moving files), the attacker can exploit the race condition
  (CWE-362/CWE-367!). Set up the correct permissions (e.g., using setuid())
  and try to open the file directly.
  if (!access(fnbuf,X_OK)) authorised();
data/authbind-2.1.2/libauthbind.c:107:5:  [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(newval+before,preload+lpreload-after);
data/authbind-2.1.2/libauthbind.c:111:3:  [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(preload+before,preload+lpreload-after);
data/authbind-2.1.2/libauthbind.c:216:5:  [4] (shell) execl:
  This causes a new program to execute and is difficult to use safely
  (CWE-78). try using a library call that implements the same functionality
  if available.
    execl(HELPER,HELPER,addrarg,portarg,afarg,(char*)0);
data/authbind-2.1.2/authbind.c:70:16:  [3] (buffer) getenv:
  Environment variables are untrustable input if they can be set by an
  attacker. They can have any content and length, and the same variable can
  be set more than once (CWE-807, CWE-20). Check environment variables
  carefully before using them.
  authbindlib= getenv(AUTHBINDLIB_VAR);
data/authbind-2.1.2/authbind.c:76:19:  [3] (buffer) getenv:
  Environment variables are untrustable input if they can be set by an
  attacker. They can have any content and length, and the same variable can
  be set more than once (CWE-807, CWE-20). Check environment variables
  carefully before using them.
  if ((expreload= getenv(PRELOAD_VAR))) {
data/authbind-2.1.2/libauthbind.c:75:12:  [3] (buffer) getenv:
  Environment variables are untrustable input if they can be set by an
  attacker. They can have any content and length, and the same variable can
  be set more than once (CWE-807, CWE-20). Check environment variables
  carefully before using them.
  preload= getenv(PRELOAD_VAR);
data/authbind-2.1.2/libauthbind.c:76:11:  [3] (buffer) getenv:
  Environment variables are untrustable input if they can be set by an
  attacker. They can have any content and length, and the same variable can
  be set more than once (CWE-807, CWE-20). Check environment variables
  carefully before using them.
  myself= getenv(AUTHBINDLIB_VAR);
data/authbind-2.1.2/libauthbind.c:127:11:  [3] (buffer) getenv:
  Environment variables are untrustable input if they can be set by an
  attacker. They can have any content and length, and the same variable can
  be set more than once (CWE-807, CWE-20). Check environment variables
  carefully before using them.
  levels= getenv(AUTHBIND_LEVELS_VAR);
data/authbind-2.1.2/authbind.c:50:3:  [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 buf[50];
data/authbind-2.1.2/authbind.c:88:5:  [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(buf,"%ld",depth-1);
data/authbind-2.1.2/helper.c:73:5:  [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 hex[3], *ep;
data/authbind-2.1.2/helper.c:84:3:  [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 fnbuf[300];
data/authbind-2.1.2/helper.c:141:3:  [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 npbuf[INET_ADDRSTRLEN + INET6_ADDRSTRLEN];
data/authbind-2.1.2/helper.c:154:5:  [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 sbuf[addrlen_any*3+1], *sp = sbuf;
data/authbind-2.1.2/helper.c:162:13:  [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.
      sp += sprintf(sp,"%x",val);
data/authbind-2.1.2/helper.c:171:9:  [2] (misc) fopen:
  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).
  file= fopen(fnbuf,"r");
data/authbind-2.1.2/helper.c:212:11:  [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.
	unsigned char thaddr[addrlen_any];
data/authbind-2.1.2/helper.c:238:11:  [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.
	unsigned char minaddr[addrlen_any];
data/authbind-2.1.2/helper.c:239:11:  [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.
	unsigned char maxaddr[addrlen_any];
data/authbind-2.1.2/libauthbind.c:106:5:  [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(newval,preload,before);
data/authbind-2.1.2/libauthbind.c:130:14:  [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).
    levelno= atoi(levels);
data/authbind-2.1.2/libauthbind.c:133:24:  [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.
      if (levelno > 0) sprintf(levels,"%d",levelno);
data/authbind-2.1.2/libauthbind.c:147:3:  [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 portarg[5], addrarg[33];
data/authbind-2.1.2/libauthbind.c:183:5:  [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(addrarg,"%08lx",
data/authbind-2.1.2/libauthbind.c:190:7:  [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(addrarg+i*2,"%02x",
data/authbind-2.1.2/libauthbind.c:196:3:  [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(portarg,"%04x",
data/authbind-2.1.2/authbind.c:77:24:  [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).
    newpreload= malloc(strlen(expreload)+strlen(authbindlib)+2);
data/authbind-2.1.2/authbind.c:77:42:  [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).
    newpreload= malloc(strlen(expreload)+strlen(authbindlib)+2);
data/authbind-2.1.2/authbind.c:79:5:  [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(newpreload,":");
data/authbind-2.1.2/helper.c:182:12:  [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).
	 nchar == strlen(fnbuf))) {
data/authbind-2.1.2/helper.c:210:15:  [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 (nchar != strlen(slash))
data/authbind-2.1.2/helper.c:251:13:  [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).
	  nchar == strlen(comma)) {
data/authbind-2.1.2/helper.c:256:13:  [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).
		 nchar == strlen(comma)) {
data/authbind-2.1.2/libauthbind.c:40:39:  [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).
#define STDERRSTR_STRING(m) write(2,m,strlen(m))
data/authbind-2.1.2/libauthbind.c:79:13:  [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).
  lpreload= strlen(preload);
data/authbind-2.1.2/libauthbind.c:80:12:  [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).
  lmyself= strlen(myself);

ANALYSIS SUMMARY:

Hits = 41
Lines analyzed = 657 in approximately 0.03 seconds (23057 lines/second)
Physical Source Lines of Code (SLOC) = 489
Hits@level = [0]  13 [1]  10 [2]  18 [3]   5 [4]   8 [5]   0
Hits@level+ = [0+]  54 [1+]  41 [2+]  31 [3+]  13 [4+]   8 [5+]   0
Hits/KSLOC@level+ = [0+] 110.429 [1+] 83.8446 [2+] 63.3947 [3+] 26.5849 [4+] 16.3599 [5+]   0
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.