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/ujson-4.0.1/lib/dconv_wrapper.cc
Examining data/ujson-4.0.1/lib/ultrajson.h
Examining data/ujson-4.0.1/lib/ultrajsondec.c
Examining data/ujson-4.0.1/lib/ultrajsonenc.c
Examining data/ujson-4.0.1/python/JSONtoObj.c
Examining data/ujson-4.0.1/python/objToJSON.c
Examining data/ujson-4.0.1/python/ujson.c
Examining data/ujson-4.0.1/python/version.h
Examining data/ujson-4.0.1/python/version_template.h

FINAL RESULTS:

data/ujson-4.0.1/lib/ultrajsonenc.c:56:9:  [4] (format) snprintf:
  If format strings can be influenced by an attacker, they can be exploited,
  and note that sprintf variations do not always \0-terminate (CWE-134). Use
  a constant for the format specification.
#define snprintf sprintf_s
data/ujson-4.0.1/lib/ultrajsondec.c:340:7:  [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(ds->escStart, oldStart, escLen * sizeof(wchar_t));
data/ujson-4.0.1/lib/ultrajsondec.c:751:3:  [2] (buffer) wchar_t:
  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.
  wchar_t escBuffer[(JSON_MAX_STACK_BUFFER_SIZE / sizeof(wchar_t))];
data/ujson-4.0.1/lib/ultrajsonenc.c:145:5:  [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 (enc->start, oldStart, offset);
data/ujson-4.0.1/lib/ultrajsonenc.c:312:9:  [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(&in16, io, sizeof(JSUTF16));
data/ujson-4.0.1/lib/ultrajsonenc.c:345:9:  [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(&in16, io, sizeof(JSUTF16));
data/ujson-4.0.1/lib/ultrajsonenc.c:346:9:  [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(&in8, io + 2, sizeof(JSUINT8));
data/ujson-4.0.1/lib/ultrajsonenc.c:378:9:  [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(&in, io, sizeof(JSUTF32));
data/ujson-4.0.1/lib/ultrajsonenc.c:571:3:  [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 buf[128];
data/ujson-4.0.1/lib/ultrajsonenc.c:579:3:  [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(enc->offset, buf, strlength);
data/ujson-4.0.1/lib/ultrajsonenc.c:851:7:  [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(enc->offset, value, szlen);
data/ujson-4.0.1/python/objToJSON.c:743:3:  [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 buffer[65536];
data/ujson-4.0.1/python/JSONtoObj.c:204:13:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  PyObject *read;
data/ujson-4.0.1/python/JSONtoObj.c:223:26:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  if (!PyCallable_Check (read)) {
data/ujson-4.0.1/python/JSONtoObj.c:224:16:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    Py_XDECREF(read);
data/ujson-4.0.1/python/JSONtoObj.c:229:33:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  string = PyObject_CallObject (read, NULL);
data/ujson-4.0.1/python/JSONtoObj.c:230:14:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  Py_XDECREF(read);

ANALYSIS SUMMARY:

Hits = 17
Lines analyzed = 3582 in approximately 0.13 seconds (28369 lines/second)
Physical Source Lines of Code (SLOC) = 2636
Hits@level = [0]   0 [1]   5 [2]  11 [3]   0 [4]   1 [5]   0
Hits@level+ = [0+]  17 [1+]  17 [2+]  12 [3+]   1 [4+]   1 [5+]   0
Hits/KSLOC@level+ = [0+] 6.44917 [1+] 6.44917 [2+] 4.55235 [3+] 0.379363 [4+] 0.379363 [5+]   0
Dot directories skipped = 2 (--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.