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/yarl-1.4.2/yarl/_quoting.c

FINAL RESULTS:

data/yarl-1.4.2/yarl/_quoting.c:772:5:  [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(__PYX_DEFAULT_STRING_ENCODING, default_encoding_c);
data/yarl-1.4.2/yarl/_quoting.c:10723:18:  [3] (random) setstate:
  This function is not sufficiently random for security-related functions
  such as key and nonce creation (CWE-327). Use a more secure technique for
  acquiring random values.
            if (!setstate) PyErr_Clear();
data/yarl-1.4.2/yarl/_quoting.c:10724:18:  [3] (random) setstate:
  This function is not sufficiently random for security-related functions
  such as key and nonce creation (CWE-327). Use a more secure technique for
  acquiring random values.
            if (!setstate || __Pyx_setup_reduce_is_named(setstate, __pyx_n_s_setstate_cython)) {
data/yarl-1.4.2/yarl/_quoting.c:10724:58:  [3] (random) setstate:
  This function is not sufficiently random for security-related functions
  such as key and nonce creation (CWE-327). Use a more secure technique for
  acquiring random values.
            if (!setstate || __Pyx_setup_reduce_is_named(setstate, __pyx_n_s_setstate_cython)) {
data/yarl-1.4.2/yarl/_quoting.c:10745:16:  [3] (random) setstate:
  This function is not sufficiently random for security-related functions
  such as key and nonce creation (CWE-327). Use a more secure technique for
  acquiring random values.
    Py_XDECREF(setstate);
data/yarl-1.4.2/yarl/_quoting.c:725:9:  [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 ascii_chars[128];
data/yarl-1.4.2/yarl/_quoting.c:1449:8:  [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.
static char __pyx_v_4yarl_8_quoting_BUFFER[0x2000];
data/yarl-1.4.2/yarl/_quoting.c:2242:14:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
      (void)(memcpy(__pyx_v_buf, __pyx_v_writer->buf, __pyx_v_writer->size));
data/yarl-1.4.2/yarl/_quoting.c:6807:3:  [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(&(__pyx_v___pyx_result->_protected_table[0]), __pyx_t_2, sizeof(__pyx_v___pyx_result->_protected_table[0]) * (16));
data/yarl-1.4.2/yarl/_quoting.c:6825:3:  [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(&(__pyx_v___pyx_result->_safe_table[0]), __pyx_t_2, sizeof(__pyx_v___pyx_result->_safe_table[0]) * (16));
data/yarl-1.4.2/yarl/_quoting.c:10757:5:  [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 warning[200];
data/yarl-1.4.2/yarl/_quoting.c:11929:5:  [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 ctversion[4], rtversion[4];
data/yarl-1.4.2/yarl/_quoting.c:11933:9:  [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 message[200];
data/yarl-1.4.2/yarl/_quoting.c:649:87:  [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 __Pyx_PyByteArray_FromString(s) PyByteArray_FromStringAndSize((const char*)s, strlen((const char*)s))
data/yarl-1.4.2/yarl/_quoting.c:770:52:  [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).
    __PYX_DEFAULT_STRING_ENCODING = (char*) malloc(strlen(default_encoding_c) + 1);
data/yarl-1.4.2/yarl/_quoting.c:11977:65:  [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).
    return __Pyx_PyUnicode_FromStringAndSize(c_str, (Py_ssize_t)strlen(c_str));

ANALYSIS SUMMARY:

Hits = 16
Lines analyzed = 12199 in approximately 0.30 seconds (40081 lines/second)
Physical Source Lines of Code (SLOC) = 8047
Hits@level = [0]   0 [1]   3 [2]   8 [3]   4 [4]   1 [5]   0
Hits@level+ = [0+]  16 [1+]  16 [2+]  13 [3+]   5 [4+]   1 [5+]   0
Hits/KSLOC@level+ = [0+] 1.98832 [1+] 1.98832 [2+] 1.61551 [3+] 0.62135 [4+] 0.12427 [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.