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/python-yubico-1.3.3/doc/ykdef.h

FINAL RESULTS:

data/python-yubico-1.3.3/doc/ykdef.h:66:14:  [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.
    unsigned char payload[SLOT_DATA_SIZE]; /* Frame payload */
data/python-yubico-1.3.3/doc/ykdef.h:69:14:  [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.
    unsigned char filler[3];            /* Filler */
data/python-yubico-1.3.3/doc/ykdef.h:77:11:  [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 uid[UID_SIZE];	/* Unique (secret) ID */
data/python-yubico-1.3.3/doc/ykdef.h:99:11:  [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 fixed[FIXED_SIZE];/* Fixed data in binary format */
data/python-yubico-1.3.3/doc/ykdef.h:100:11:  [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 uid[UID_SIZE];	/* Fixed UID part of ticket */
data/python-yubico-1.3.3/doc/ykdef.h:101:11:  [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 key[KEY_SIZE];	/* AES key */
data/python-yubico-1.3.3/doc/ykdef.h:102:11:  [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 accCode[ACC_CODE_SIZE]; /* Access code to re-program device */
data/python-yubico-1.3.3/doc/ykdef.h:107:11:  [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 rfu[2];		/* Reserved for future use */
data/python-yubico-1.3.3/doc/ykdef.h:182:11:  [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 scancode[MAX_URL];/* Scancode (lower 7 bits) */
data/python-yubico-1.3.3/doc/ykdef.h:183:11:  [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 scanmod[MAX_URL >> 2];	/* Modifier fields (packed 2 bits each) */

ANALYSIS SUMMARY:

Hits = 10
Lines analyzed = 220 in approximately 0.05 seconds (4384 lines/second)
Physical Source Lines of Code (SLOC) = 128
Hits@level = [0]   0 [1]   0 [2]  10 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]  10 [1+]  10 [2+]  10 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 78.125 [1+] 78.125 [2+] 78.125 [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.