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/gifshuffle-2.0/compress.c
Examining data/gifshuffle-2.0/encode.c
Examining data/gifshuffle-2.0/encrypt.c
Examining data/gifshuffle-2.0/epi.c
Examining data/gifshuffle-2.0/epi.h
Examining data/gifshuffle-2.0/gif.c
Examining data/gifshuffle-2.0/gif.h
Examining data/gifshuffle-2.0/gifshuf.h
Examining data/gifshuffle-2.0/huffcode.h
Examining data/gifshuffle-2.0/ice.c
Examining data/gifshuffle-2.0/ice.h
Examining data/gifshuffle-2.0/main.c

FINAL RESULTS:

data/gifshuffle-2.0/compress.c:17:14:  [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 const char	*huffcodes[256] = {
data/gifshuffle-2.0/compress.c:187:8:  [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	uncompress_value[256];
data/gifshuffle-2.0/encode.c:21:11:  [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	ctext[8];
data/gifshuffle-2.0/encrypt.c:19:17:  [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 unsigned char	encrypt_iv_block[8];
data/gifshuffle-2.0/encrypt.c:32:11:  [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	buf[1024];
data/gifshuffle-2.0/encrypt.c:108:11:  [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	ptext[8];
data/gifshuffle-2.0/encrypt.c:147:11:  [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	buf[8];
data/gifshuffle-2.0/encrypt.c:203:11:  [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	buf[8];
data/gifshuffle-2.0/epi.h:14:2:  [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	epi_bits[EPI_MAX_BITS];
data/gifshuffle-2.0/gif.c:34:11:  [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	buf[768];
data/gifshuffle-2.0/gif.c:123:15:  [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	buf[256];
data/gifshuffle-2.0/gif.c:202:11:  [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	lb_buffer[280];
data/gifshuffle-2.0/gif.c:314:12:  [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.
		unsigned char	buf[260];
data/gifshuffle-2.0/gif.c:496:11:  [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	p_buffer[256];
data/gifshuffle-2.0/gif.c:804:11:  [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	buf[9], *image;
data/gifshuffle-2.0/gif.c:823:15:  [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	cmbuf[768];
data/gifshuffle-2.0/gif.c:893:11:  [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	buf[768];
data/gifshuffle-2.0/gif.h:23:11:  [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	gi_header[13];
data/gifshuffle-2.0/main.c:160:25:  [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).
		    if ((message_fp = fopen (optarg, "rb")) == NULL) {
data/gifshuffle-2.0/main.c:213:20:  [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).
	    if ((infile = fopen (argv[optind], "rb")) == NULL) {
data/gifshuffle-2.0/main.c:220:21:  [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).
	    if ((outfile = fopen (argv[optind + 1], "wb")) == NULL) {
data/gifshuffle-2.0/encrypt.c:34:11:  [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).
	level = (strlen (passwd) * 7 + 63) / 64;
data/gifshuffle-2.0/main.c:95:14:  [1] (buffer) fgetc:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
	while ((c = fgetc (msg_fp)) != EOF)

ANALYSIS SUMMARY:

Hits = 23
Lines analyzed = 3221 in approximately 0.09 seconds (35095 lines/second)
Physical Source Lines of Code (SLOC) = 2113
Hits@level = [0]  57 [1]   2 [2]  21 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]  80 [1+]  23 [2+]  21 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 37.8609 [1+] 10.885 [2+] 9.93848 [3+]   0 [4+]   0 [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.