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/mscompress-0.4/src/version.c
Examining data/mscompress-0.4/src/msexpand.c
Examining data/mscompress-0.4/src/mscompress.c

FINAL RESULTS:

data/mscompress-0.4/src/mscompress.c:361:7:  [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 (name, argv[0]);
data/mscompress-0.4/src/msexpand.c:273:7:  [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 (name, argv[0]);
data/mscompress-0.4/src/mscompress.c:320:15:  [3] (buffer) getopt:
  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.
  while ((c = getopt (argc, argv, "hV")) != -1)
data/mscompress-0.4/src/msexpand.c:229:15:  [3] (buffer) getopt:
  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.
  while ((c = getopt (argc, argv, "hV")) != -1)
data/mscompress-0.4/src/mscompress.c:158:3:  [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[17];
data/mscompress-0.4/src/mscompress.c:316:3:  [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 name[0x100];
data/mscompress-0.4/src/mscompress.c:354:12:  [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).
      in = open (argv[0], O_RDONLY);
data/mscompress-0.4/src/mscompress.c:364:13:  [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).
      out = open (name, O_WRONLY | O_CREAT | O_EXCL, 0644);
data/mscompress-0.4/src/msexpand.c:225:3:  [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 name[0x100];
data/mscompress-0.4/src/msexpand.c:266:12:  [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).
      in = open (argv[0], O_RDONLY);
data/mscompress-0.4/src/msexpand.c:276:13:  [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).
      out = open (name, O_WRONLY | O_CREAT | O_EXCL, 0644);
data/mscompress-0.4/src/mscompress.c:149:7:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  if (read (f, &b, sizeof (b)) != 1)
data/mscompress-0.4/src/mscompress.c:346:19:  [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 (argv[0][strlen (argv[0]) - 1] == '_')
data/mscompress-0.4/src/mscompress.c:362:7:  [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 (name, "_");
data/mscompress-0.4/src/msexpand.c:45:7:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  if (read (f, &b, sizeof (b)) != 1)
data/mscompress-0.4/src/msexpand.c:62:7:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  if (read (in, &magic1, sizeof (magic1)) != sizeof (magic1))
data/mscompress-0.4/src/msexpand.c:74:11:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
      if (read (in, &magic2, sizeof (magic2)) != sizeof (magic2))
data/mscompress-0.4/src/msexpand.c:80:11:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
      if (read (in, &reserved, sizeof (reserved)) != sizeof (reserved))
data/mscompress-0.4/src/msexpand.c:86:11:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
      if (read (in, &filesize, sizeof (filesize)) != sizeof (filesize))
data/mscompress-0.4/src/msexpand.c:108:11:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
      if (read (in, &magic2, sizeof (magic2)) != sizeof (magic2))
data/mscompress-0.4/src/msexpand.c:114:11:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
      if (read (in, &magic3, sizeof (magic3)) != sizeof (magic3))
data/mscompress-0.4/src/msexpand.c:120:11:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
      if (read (in, &reserved, sizeof (reserved)) != sizeof (reserved))
data/mscompress-0.4/src/msexpand.c:258:19:  [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 (argv[0][strlen (argv[0]) - 1] != '_')
data/mscompress-0.4/src/msexpand.c:274:12:  [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).
      name[strlen (name) - 1] = 0;

ANALYSIS SUMMARY:

Hits = 24
Lines analyzed = 673 in approximately 0.03 seconds (25968 lines/second)
Physical Source Lines of Code (SLOC) = 554
Hits@level = [0]  13 [1]  13 [2]   7 [3]   2 [4]   2 [5]   0
Hits@level+ = [0+]  37 [1+]  24 [2+]  11 [3+]   4 [4+]   2 [5+]   0
Hits/KSLOC@level+ = [0+] 66.787 [1+] 43.3213 [2+] 19.8556 [3+] 7.22022 [4+] 3.61011 [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.