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/nwipe-0.28/src/context.h
Examining data/nwipe-0.28/src/device.c
Examining data/nwipe-0.28/src/device.h
Examining data/nwipe-0.28/src/gui.c
Examining data/nwipe-0.28/src/gui.h
Examining data/nwipe-0.28/src/isaac_rand/isaac_rand.c
Examining data/nwipe-0.28/src/isaac_rand/isaac_rand.h
Examining data/nwipe-0.28/src/isaac_rand/isaac_standard.h
Examining data/nwipe-0.28/src/logging.c
Examining data/nwipe-0.28/src/logging.h
Examining data/nwipe-0.28/src/method.c
Examining data/nwipe-0.28/src/method.h
Examining data/nwipe-0.28/src/mt19937ar-cok/mt19937ar-cok.c
Examining data/nwipe-0.28/src/mt19937ar-cok/mt19937ar-cok.h
Examining data/nwipe-0.28/src/nwipe.c
Examining data/nwipe-0.28/src/nwipe.h
Examining data/nwipe-0.28/src/options.c
Examining data/nwipe-0.28/src/options.h
Examining data/nwipe-0.28/src/pass.c
Examining data/nwipe-0.28/src/pass.h
Examining data/nwipe-0.28/src/prng.c
Examining data/nwipe-0.28/src/prng.h
Examining data/nwipe-0.28/src/version.c
Examining data/nwipe-0.28/src/version.h

FINAL RESULTS:

data/nwipe-0.28/src/logging.c:213:13:  [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.
            vsnprintf( message_buffer + line_current_pos, MAX_LOG_LINE_CHARS - line_current_pos - 1, format, ap );
data/nwipe-0.28/src/logging.c:278:5:  [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( log_lines[log_current_element], message_buffer );
data/nwipe-0.28/src/logging.c:442:9:  [4] (format) sprintf:
  Potential format string problem (CWE-134). Make format string constant.
        sprintf( cmd, dmidecode_command, &dmidecode_keywords[keywords_idx][0] );
data/nwipe-0.28/src/logging.c:443:14:  [4] (shell) popen:
  This causes a new program to execute and is difficult to use safely
  (CWE-78). try using a library call that implements the same functionality
  if available.
        fp = popen( cmd, "r" );
data/nwipe-0.28/src/options.c:128:21:  [3] (buffer) getopt_long:
  Some older implementations do not protect against internal buffer overflows
  (CWE-120, CWE-20). Check implementation on installation, or limit the size
  of all string inputs.
        nwipe_opt = getopt_long( argc, argv, nwipe_options_short, nwipe_options_long, &i );
data/nwipe-0.28/src/context.h:89:5:  [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 device_label[NWIPE_DEVICE_LABEL_LENGTH];  // The label (name, model, size and serial) of the device.
data/nwipe-0.28/src/context.h:92:5:  [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 device_serial_no[21];  // Serial number(processed, 20 characters plus null termination) of the device.
data/nwipe-0.28/src/device.c:158:16:  [2] (misc) open:
  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).
    if( ( fd = open( next_device->device_name = dev->path, O_RDONLY ) ) == ERR )
data/nwipe-0.28/src/gui.c:2021:16:  [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).
    nwipe_fp = fopen( NWIPE_KNOB_LOADAVG, "r" );
data/nwipe-0.28/src/gui.c:2578:9:  [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 finish_message[NWIPE_GUI_FOOTER_W];
data/nwipe-0.28/src/logging.c:55:5:  [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 message_buffer[MAX_LOG_LINE_CHARS * sizeof( char )];
data/nwipe-0.28/src/logging.c:314:14:  [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).
        fp = fopen( nwipe_options.logfile, "a" );
data/nwipe-0.28/src/logging.c:397:5:  [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 path[256];
data/nwipe-0.28/src/logging.c:433:5:  [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 cmd[sizeof( dmidecode_keywords ) + sizeof( dmidecode_command )];
data/nwipe-0.28/src/method.c:131:5:  [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 zerofill[1] = {'\x00'};
data/nwipe-0.28/src/method.c:185:5:  [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 dod[7];
data/nwipe-0.28/src/method.c:254:5:  [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 dod[3];
data/nwipe-0.28/src/method.c:599:5:  [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 is5enh[3] = {'\x00', '\xFF', '\x00'};
data/nwipe-0.28/src/nwipe.c:124:21:  [2] (misc) open:
  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).
    nwipe_entropy = open( NWIPE_KNOB_ENTROPY, O_RDONLY );
data/nwipe-0.28/src/nwipe.c:268:28:  [2] (misc) open:
  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).
        c2[i]->device_fd = open( c2[i]->device_name, O_RDWR );
data/nwipe-0.28/src/options.h:57:5:  [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 logfile[FILENAME_MAX];  // The filename to log the output to.
data/nwipe-0.28/src/options.h:58:5:  [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 exclude[MAX_NUMBER_EXCLUDED_DRIVES][MAX_DRIVE_PATH_LENGTH];  // Drives excluded from the search.
data/nwipe-0.28/src/pass.c:491:9:  [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( q, pattern->s, pattern->length );
data/nwipe-0.28/src/pass.c:686:9:  [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( p, pattern->s, pattern->length );
data/nwipe-0.28/src/prng.c:127:9:  [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( isaac_state->randrsl, seed->s, count );
data/nwipe-0.28/src/device.c:181:9:  [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).
    if( strlen( (const char*) next_device->device_serial_no ) )
data/nwipe-0.28/src/device.c:227:11:  [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).
    len = strlen( str );
data/nwipe-0.28/src/gui.c:161:25:  [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).
    int margin = ( wx - strlen( s ) );
data/nwipe-0.28/src/gui.c:2560:63:  [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).
            mvwprintw( stats_window, 0, ( NWIPE_GUI_STATS_W - strlen( stats_title ) ) / 2, "%s", stats_title );
data/nwipe-0.28/src/logging.c:262:33:  [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).
        message_buffer_length = strlen( message_buffer ) * sizeof( char );
data/nwipe-0.28/src/logging.c:453:19:  [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).
            len = strlen( path );
data/nwipe-0.28/src/method.c:197:9:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    r = read( c->entropy_fd, &dod, sizeof( dod ) );
data/nwipe-0.28/src/method.c:262:9:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    r = read( c->entropy_fd, &dod, sizeof( dod ) );
data/nwipe-0.28/src/method.c:368:9:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    r = read( c->entropy_fd, &s, sizeof( s ) );
data/nwipe-0.28/src/method.c:513:9:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    r = read( c->entropy_fd, s, u );
data/nwipe-0.28/src/method.c:810:21:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
                r = read( c->entropy_fd, c->prng_seed.s, c->prng_seed.length );
data/nwipe-0.28/src/method.c:903:13:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
        r = read( c->entropy_fd, c->prng_seed.s, c->prng_seed.length );
data/nwipe-0.28/src/nwipe.c:308:13:  [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).
        if( strlen( (const char*) c2[i]->device_serial_no ) )
data/nwipe-0.28/src/options.c:267:39:  [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).
                nwipe_options.logfile[strlen( optarg )] = '\0';
data/nwipe-0.28/src/options.c:268:17:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
                strncpy( nwipe_options.logfile, optarg, sizeof( nwipe_options.logfile ) );
data/nwipe-0.28/src/pass.c:157:18:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
        c->prng->read( &c->prng_state, d, blocksize );
data/nwipe-0.28/src/pass.c:160:13:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
        r = read( c->device_fd, b, blocksize );
data/nwipe-0.28/src/pass.c:318:18:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
        c->prng->read( &c->prng_state, b, blocksize );
data/nwipe-0.28/src/pass.c:553:13:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
        r = read( c->device_fd, b, blocksize );
data/nwipe-0.28/src/prng.h:43:23:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    nwipe_prng_read_t read;  // Read data from the prng.

ANALYSIS SUMMARY:

Hits = 45
Lines analyzed = 7895 in approximately 0.21 seconds (37673 lines/second)
Physical Source Lines of Code (SLOC) = 4864
Hits@level = [0]  53 [1]  20 [2]  20 [3]   1 [4]   4 [5]   0
Hits@level+ = [0+]  98 [1+]  45 [2+]  25 [3+]   5 [4+]   4 [5+]   0
Hits/KSLOC@level+ = [0+] 20.148 [1+] 9.25164 [2+] 5.1398 [3+] 1.02796 [4+] 0.822368 [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.