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/plotdrop-0.5.4/droplist.c
Examining data/plotdrop-0.5.4/droplist.h
Examining data/plotdrop-0.5.4/gnuplot.c
Examining data/plotdrop-0.5.4/gnuplot.h
Examining data/plotdrop-0.5.4/main.c
Examining data/plotdrop-0.5.4/plotdata.h

FINAL RESULTS:

data/plotdrop-0.5.4/gnuplot.c:23:14:  [4] (shell) popen:
  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.
extern FILE *popen (__const char *__command, __const char *__modes);
data/plotdrop-0.5.4/gnuplot.c:88:19:  [4] (shell) popen:
  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.
	FILE *instance = popen (command, "r");
data/plotdrop-0.5.4/gnuplot.c:101:14:  [4] (shell) popen:
  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.
		instance = popen (command, "r");
data/plotdrop-0.5.4/gnuplot.c:270:15:  [4] (shell) popen:
  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.
	FILE *prog = popen ("gnuplot --version", "r");
data/plotdrop-0.5.4/gnuplot.c:289:2:  [4] (buffer) sscanf:
  The scanf() family's %s operation, without a limit specification, permits
  buffer overflows (CWE-120, CWE-20). Specify a limit to %s, or use a
  different input function.
	sscanf (outp, "gnuplot %s\n", version);
data/plotdrop-0.5.4/gnuplot.c:43:2:  [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 scriptname[256];
data/plotdrop-0.5.4/gnuplot.c:45:21:  [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).
	FILE *plotscript = fopen (scriptname, "wx");
data/plotdrop-0.5.4/gnuplot.c:81:2:  [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 command[512];
data/plotdrop-0.5.4/gnuplot.c:276:2:  [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 outp[255];
data/plotdrop-0.5.4/gnuplot.c:291:6:  [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 (strlen (version) == 0)

ANALYSIS SUMMARY:

Hits = 10
Lines analyzed = 1395 in approximately 0.04 seconds (32712 lines/second)
Physical Source Lines of Code (SLOC) = 1029
Hits@level = [0]  57 [1]   1 [2]   4 [3]   0 [4]   5 [5]   0
Hits@level+ = [0+]  67 [1+]  10 [2+]   9 [3+]   5 [4+]   5 [5+]   0
Hits/KSLOC@level+ = [0+] 65.1118 [1+] 9.71817 [2+] 8.74636 [3+] 4.85909 [4+] 4.85909 [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.