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/sunpy-2.0.5/sunpy/_compiler.c
Examining data/sunpy-2.0.5/sunpy/io/src/ana/_pyana.c
Examining data/sunpy-2.0.5/sunpy/io/src/ana/anacompress.c
Examining data/sunpy-2.0.5/sunpy/io/src/ana/anacompress.h
Examining data/sunpy-2.0.5/sunpy/io/src/ana/anadecompress.c
Examining data/sunpy-2.0.5/sunpy/io/src/ana/anadecompress.h
Examining data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c
Examining data/sunpy-2.0.5/sunpy/io/src/ana/anarw.h
Examining data/sunpy-2.0.5/sunpy/io/src/ana/types.h

FINAL RESULTS:

data/sunpy-2.0.5/sunpy/io/src/ana/_pyana.c:57:18:  [4] (format) vsnprintf:
  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.
    int wanted = vsnprintf( *sptr = NULL, 0, fmt, argv );
data/sunpy-2.0.5/sunpy/io/src/ana/_pyana.c:62:14:  [4] (format) vsnprintf:
  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.
    retval = vsnprintf( *sptr, 1 + wanted, fmt, argv2 );
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:108:16:  [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).
  char *header=strcpy(malloc(strlen(fh.txt)+1),fh.txt);
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:140:11:  [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).
  *header=strcpy(malloc(strlen(fh.txt)+1),fh.txt);
data/sunpy-2.0.5/sunpy/io/src/ana/anacompress.c:22:35:  [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.
 union { int i; short w; unsigned char b[4]; } y;
data/sunpy-2.0.5/sunpy/io/src/ana/anacompress.c:197:35:  [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.
 union { int i; short w; unsigned char b[4]; } y;
data/sunpy-2.0.5/sunpy/io/src/ana/anacompress.c:302:35:  [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.
 union { int i; short w; unsigned char b[4]; } y;
data/sunpy-2.0.5/sunpy/io/src/ana/anacompress.c:479:14:  [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 b[4];
data/sunpy-2.0.5/sunpy/io/src/ana/anacompress.c:627:35:  [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.
 union { int i; short w; unsigned char b[4]; } y;
data/sunpy-2.0.5/sunpy/io/src/ana/anacompress.c:628:34:  [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.
 union { long long l64; unsigned char b[8];  } yy;
data/sunpy-2.0.5/sunpy/io/src/ana/anadecompress.c:18:35:  [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.
 union { int i; short w; unsigned char b[4]; } y;
data/sunpy-2.0.5/sunpy/io/src/ana/anadecompress.c:19:34:  [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.
 union { long long l64; unsigned char b[8];  } yy;
data/sunpy-2.0.5/sunpy/io/src/ana/anadecompress.c:139:18:  [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 b[4];
data/sunpy-2.0.5/sunpy/io/src/ana/anadecompress.c:303:35:  [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.
 union { int i; short w; unsigned char b[4]; } y;
data/sunpy-2.0.5/sunpy/io/src/ana/anadecompress.c:400:35:  [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.
 union { int i; short w; unsigned char b[4]; } y;
data/sunpy-2.0.5/sunpy/io/src/ana/anadecompress.c:542:35:  [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.
 union { int i; short w; unsigned char b[4]; } y;
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:99:13:  [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).
  FILE *fin=fopen(file_name,"r");
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:127:13:  [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).
  FILE *fin=fopen(file_name,"r");
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:214:11:  [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).
  FILE *f=fopen(file_name,"w");
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:281:11:  [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).
  FILE *f=fopen(file_name,"w");
data/sunpy-2.0.5/sunpy/io/src/ana/types.h:27:3:  [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 txt[256];
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:108:30:  [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).
  char *header=strcpy(malloc(strlen(fh.txt)+1),fh.txt);
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:140:25:  [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).
  *header=strcpy(malloc(strlen(fh.txt)+1),fh.txt);
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:258:18:  [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).
    int len=fmin(strlen(header),255);
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:259:5:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
    strncpy(fh.txt,header,len);
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:317:18:  [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).
    int len=fmin(strlen(header),255);
data/sunpy-2.0.5/sunpy/io/src/ana/anarw.c:318:5:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
    strncpy(fh.txt,header,len);

ANALYSIS SUMMARY:

Hits = 27
Lines analyzed = 2346 in approximately 0.21 seconds (11058 lines/second)
Physical Source Lines of Code (SLOC) = 1776
Hits@level = [0]  56 [1]   6 [2]  17 [3]   0 [4]   4 [5]   0
Hits@level+ = [0+]  83 [1+]  27 [2+]  21 [3+]   4 [4+]   4 [5+]   0
Hits/KSLOC@level+ = [0+] 46.7342 [1+] 15.2027 [2+] 11.8243 [3+] 2.25225 [4+] 2.25225 [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.