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/puma-4.3.6/ext/puma_http11/ext_help.h
Examining data/puma-4.3.6/ext/puma_http11/http11_parser.c
Examining data/puma-4.3.6/ext/puma_http11/http11_parser.h
Examining data/puma-4.3.6/ext/puma_http11/io_buffer.c
Examining data/puma-4.3.6/ext/puma_http11/mini_ssl.c
Examining data/puma-4.3.6/ext/puma_http11/puma_http11.c

FINAL RESULTS:

data/puma-4.3.6/ext/puma_http11/http11_parser.h:52:3:  [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[BUFFER_LEN];
data/puma-4.3.6/ext/puma_http11/io_buffer.c:56:5:  [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(top, old, used);
data/puma-4.3.6/ext/puma_http11/io_buffer.c:63:3:  [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(b->cur, RSTRING_PTR(str), str_len);
data/puma-4.3.6/ext/puma_http11/io_buffer.c:97:5:  [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(top, old, used);
data/puma-4.3.6/ext/puma_http11/io_buffer.c:108:5:  [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(b->cur, RSTRING_PTR(str), str_len);
data/puma-4.3.6/ext/puma_http11/mini_ssl.c:300:3:  [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[512];
data/puma-4.3.6/ext/puma_http11/mini_ssl.c:301:3:  [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 msg[512];
data/puma-4.3.6/ext/puma_http11/mini_ssl.c:333:3:  [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[512];
data/puma-4.3.6/ext/puma_http11/mini_ssl.c:385:3:  [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[512];
data/puma-4.3.6/ext/puma_http11/puma_http11.c:134:3:  [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 tmp[256]; /* MAX_FIELD_NAME_LENGTH */
data/puma-4.3.6/ext/puma_http11/puma_http11.c:135:3:  [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(tmp, HTTP_PREFIX, HTTP_PREFIX_LEN);
data/puma-4.3.6/ext/puma_http11/puma_http11.c:141:7:  [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(tmp + HTTP_PREFIX_LEN, cf->name, cf->len + 1);
data/puma-4.3.6/ext/puma_http11/puma_http11.c:198:5:  [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(hp->buf, HTTP_PREFIX, HTTP_PREFIX_LEN);
data/puma-4.3.6/ext/puma_http11/puma_http11.c:199:5:  [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(hp->buf + HTTP_PREFIX_LEN, field, flen);
data/puma-4.3.6/ext/puma_http11/mini_ssl.c:25:8:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  BIO* read;
data/puma-4.3.6/ext/puma_http11/mini_ssl.c:54:22:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  BIO_set_nbio(conn->read, 1);
data/puma-4.3.6/ext/puma_http11/mini_ssl.c:256:26:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  SSL_set_bio(ssl, conn->read, conn->write);
data/puma-4.3.6/ext/puma_http11/mini_ssl.c:274:32:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  SSL_set_bio(conn->ssl, conn->read, conn->write);
data/puma-4.3.6/ext/puma_http11/mini_ssl.c:288:26:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  used = BIO_write(conn->read, RSTRING_PTR(str), (int)RSTRING_LEN(str));

ANALYSIS SUMMARY:

Hits = 19
Lines analyzed = 2337 in approximately 0.10 seconds (23784 lines/second)
Physical Source Lines of Code (SLOC) = 1897
Hits@level = [0]   5 [1]   5 [2]  14 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]  24 [1+]  19 [2+]  14 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 12.6516 [1+] 10.0158 [2+] 7.38007 [3+]   0 [4+]   0 [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.