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/yara-python-4.0.2/yara-python.c

FINAL RESULTS:

data/yara-python-4.0.2/yara-python.c:878:7:  [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((char*) ptr + i * size, buffer, size);
data/yara-python-4.0.2/yara-python.c:1648:3:  [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 key[512];
data/yara-python-4.0.2/yara-python.c:2050:12:  [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).
      fh = fopen(filepath, "r");
data/yara-python-4.0.2/yara-python.c:2127:18:  [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).
            fh = fopen(filepath, "r");
data/yara-python-4.0.2/yara-python.c:49:46:  [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 PY_STRING(x) PyUnicode_DecodeUTF8(x, strlen(x), "ignore" )

ANALYSIS SUMMARY:

Hits = 5
Lines analyzed = 2428 in approximately 0.06 seconds (41762 lines/second)
Physical Source Lines of Code (SLOC) = 1987
Hits@level = [0]   1 [1]   1 [2]   4 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]   6 [1+]   5 [2+]   4 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 3.01963 [1+] 2.51636 [2+] 2.01309 [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.