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/xcolors-1.5a/xcolors.c

FINAL RESULTS:

data/xcolors-1.5a/xcolors.c:315:4:  [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(save_colorname, colorname);
data/xcolors-1.5a/xcolors.c:275:5:  [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 colorname[50], save_colorname[50];
data/xcolors-1.5a/xcolors.c:280:11:  [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).
    rgb = fopen(opts.rgb_file, "r");
data/xcolors-1.5a/xcolors.c:289:9:  [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 str[1024];
data/xcolors-1.5a/xcolors.c:116:16:  [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).
	namein.size = strlen(colorname) + 1;
data/xcolors-1.5a/xcolors.c:344:19:  [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).
    namein.size = strlen(colorname) + 1;

ANALYSIS SUMMARY:

Hits = 6
Lines analyzed = 380 in approximately 0.02 seconds (19748 lines/second)
Physical Source Lines of Code (SLOC) = 293
Hits@level = [0]  11 [1]   2 [2]   3 [3]   0 [4]   1 [5]   0
Hits@level+ = [0+]  17 [1+]   6 [2+]   4 [3+]   1 [4+]   1 [5+]   0
Hits/KSLOC@level+ = [0+] 58.0205 [1+] 20.4778 [2+] 13.6519 [3+] 3.41297 [4+] 3.41297 [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.