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/exfat-utils-1.3.0/libexfat/byteorder.h
Examining data/exfat-utils-1.3.0/libexfat/cluster.c
Examining data/exfat-utils-1.3.0/libexfat/compiler.h
Examining data/exfat-utils-1.3.0/libexfat/exfat.h
Examining data/exfat-utils-1.3.0/libexfat/exfatfs.h
Examining data/exfat-utils-1.3.0/libexfat/io.c
Examining data/exfat-utils-1.3.0/libexfat/log.c
Examining data/exfat-utils-1.3.0/libexfat/lookup.c
Examining data/exfat-utils-1.3.0/libexfat/mount.c
Examining data/exfat-utils-1.3.0/libexfat/node.c
Examining data/exfat-utils-1.3.0/libexfat/platform.h
Examining data/exfat-utils-1.3.0/libexfat/repair.c
Examining data/exfat-utils-1.3.0/libexfat/time.c
Examining data/exfat-utils-1.3.0/libexfat/utf.c
Examining data/exfat-utils-1.3.0/libexfat/utils.c
Examining data/exfat-utils-1.3.0/dump/main.c
Examining data/exfat-utils-1.3.0/fsck/main.c
Examining data/exfat-utils-1.3.0/label/main.c
Examining data/exfat-utils-1.3.0/mkfs/cbm.c
Examining data/exfat-utils-1.3.0/mkfs/cbm.h
Examining data/exfat-utils-1.3.0/mkfs/fat.c
Examining data/exfat-utils-1.3.0/mkfs/fat.h
Examining data/exfat-utils-1.3.0/mkfs/main.c
Examining data/exfat-utils-1.3.0/mkfs/mkexfat.c
Examining data/exfat-utils-1.3.0/mkfs/mkexfat.h
Examining data/exfat-utils-1.3.0/mkfs/rootdir.c
Examining data/exfat-utils-1.3.0/mkfs/rootdir.h
Examining data/exfat-utils-1.3.0/mkfs/uct.c
Examining data/exfat-utils-1.3.0/mkfs/uct.h
Examining data/exfat-utils-1.3.0/mkfs/uctc.c
Examining data/exfat-utils-1.3.0/mkfs/uctc.h
Examining data/exfat-utils-1.3.0/mkfs/vbr.c
Examining data/exfat-utils-1.3.0/mkfs/vbr.h
FINAL RESULTS:
data/exfat-utils-1.3.0/dump/main.c:113:3: [4] (format) printf:
If format strings can be influenced by an attacker, they can be exploited
(CWE-134). Use a constant for the format specification.
printf(" %"PRIu64"-%"PRIu64, a, b);
data/exfat-utils-1.3.0/fsck/main.c:91:2: [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(entry_path, path);
data/exfat-utils-1.3.0/libexfat/compiler.h:33:38: [4] (format) printf:
If format strings can be influenced by an attacker, they can be exploited
(CWE-134). Use a constant for the format specification.
#define PRINTF __attribute__((format(printf, 1, 2)))
data/exfat-utils-1.3.0/libexfat/compiler.h:42:38: [4] (format) printf:
If format strings can be influenced by an attacker, they can be exploited
(CWE-134). Use a constant for the format specification.
#define PRINTF __attribute__((format(printf, 1, 2)))
data/exfat-utils-1.3.0/libexfat/log.c:46:2: [4] (format) vfprintf:
If format strings can be influenced by an attacker, they can be exploited
(CWE-134). Use a constant for the format specification.
vfprintf(stderr, format, ap);
data/exfat-utils-1.3.0/libexfat/log.c:74:2: [4] (format) vfprintf:
If format strings can be influenced by an attacker, they can be exploited
(CWE-134). Use a constant for the format specification.
vfprintf(stderr, format, ap);
data/exfat-utils-1.3.0/libexfat/log.c:100:2: [4] (format) vfprintf:
If format strings can be influenced by an attacker, they can be exploited
(CWE-134). Use a constant for the format specification.
vfprintf(stderr, format, ap);
data/exfat-utils-1.3.0/libexfat/log.c:123:2: [4] (format) vfprintf:
If format strings can be influenced by an attacker, they can be exploited
(CWE-134). Use a constant for the format specification.
vfprintf(stderr, format, ap);
data/exfat-utils-1.3.0/libexfat/node.c:1224:2: [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(ef->label, label);
data/exfat-utils-1.3.0/dump/main.c:214:16: [3] (buffer) getopt:
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.
while ((opt = getopt(argc, argv, "suf:V")) != -1)
data/exfat-utils-1.3.0/fsck/main.c:164:16: [3] (buffer) getopt:
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.
while ((opt = getopt(argc, argv, "anpVy")) != -1)
data/exfat-utils-1.3.0/mkfs/main.c:209:16: [3] (buffer) getopt:
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.
while ((opt = getopt(argc, argv, "i:n:p:s:V")) != -1)
data/exfat-utils-1.3.0/fsck/main.c:44:4: [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 name[EXFAT_UTF8_NAME_BUFFER_MAX];
data/exfat-utils-1.3.0/fsck/main.c:53:4: [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 name[EXFAT_UTF8_NAME_BUFFER_MAX];
data/exfat-utils-1.3.0/libexfat/exfat.h:121:2: [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 label[EXFAT_UTF8_ENAME_BUFFER_MAX];
data/exfat-utils-1.3.0/libexfat/exfat.h:193:3: [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[EXFAT_UTF8_NAME_BUFFER_MAX]);
data/exfat-utils-1.3.0/libexfat/io.c:64:9: [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).
return open(spec, O_RDONLY);
data/exfat-utils-1.3.0/libexfat/io.c:69:11: [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).
int fd = open(spec, O_RDWR);
data/exfat-utils-1.3.0/libexfat/io.c:106:7: [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 (open("/dev/null", O_RDWR) == -1)
data/exfat-utils-1.3.0/libexfat/node.c:40:2: [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[EXFAT_UTF8_NAME_BUFFER_MAX];
data/exfat-utils-1.3.0/libexfat/node.c:158:3: [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(node->name + i * EXFAT_ENAME_MAX,
data/exfat-utils-1.3.0/libexfat/node.c:214:2: [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[EXFAT_UTF8_NAME_BUFFER_MAX];
data/exfat-utils-1.3.0/libexfat/node.c:594:2: [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[EXFAT_UTF8_NAME_BUFFER_MAX];
data/exfat-utils-1.3.0/libexfat/node.c:916:3: [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(name_entry->name, name + i * EXFAT_ENAME_MAX,
data/exfat-utils-1.3.0/libexfat/node.c:929:2: [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(node->name, name, name_length * sizeof(le16_t));
data/exfat-utils-1.3.0/libexfat/node.c:1042:3: [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(name_entry->name, name + i * EXFAT_ENAME_MAX,
data/exfat-utils-1.3.0/libexfat/node.c:1051:2: [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(node->name, name, (EXFAT_NAME_MAX + 1) * sizeof(le16_t));
data/exfat-utils-1.3.0/libexfat/repair.c:31:2: [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 answer[8];
data/exfat-utils-1.3.0/libexfat/utils.c:49:3: [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[EXFAT_UTF8_NAME_BUFFER_MAX])
data/exfat-utils-1.3.0/mkfs/main.c:223:26: [2] (integer) atoi:
Unless checked, the resulting number can exceed the expected range
(CWE-190). If source untrusted, check both minimum and maximum, even if the
input had no minus sign (large numbers can roll over into negative number;
consider saving to an unsigned value if that is intended).
spc_bits = logarithm2(atoi(optarg));
data/exfat-utils-1.3.0/mkfs/rootdir.c:47:2: [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(label_entry->name, get_volume_label(),
data/exfat-utils-1.3.0/fsck/main.c:83:16: [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).
path_length = strlen(path);
data/exfat-utils-1.3.0/fsck/main.c:92:2: [1] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused). Risk is low because the
source is a constant character.
strcat(entry_path, "/");
data/exfat-utils-1.3.0/libexfat/io.c:337:9: [1] (buffer) read:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
return read(dev->fd, buffer, size);
data/exfat-utils-1.3.0/libexfat/lookup.c:116:10: [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 strlen(*comp);
data/exfat-utils-1.3.0/libexfat/mount.c:64:18: [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).
size_t length = strlen(option_name);
data/exfat-utils-1.3.0/libexfat/mount.c:85:18: [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).
size_t length = strlen(option_name);
data/exfat-utils-1.3.0/libexfat/node.c:1204:62: [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).
rc = utf8_to_utf16(label_utf16, label, EXFAT_ENAME_MAX + 1, strlen(label));
data/exfat-utils-1.3.0/mkfs/main.c:139:54: [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 utf8_to_utf16(label, s, EXFAT_ENAME_MAX + 1, strlen(s));
ANALYSIS SUMMARY:
Hits = 39
Lines analyzed = 6618 in approximately 0.23 seconds (29396 lines/second)
Physical Source Lines of Code (SLOC) = 5092
Hits@level = [0] 41 [1] 8 [2] 19 [3] 3 [4] 9 [5] 0
Hits@level+ = [0+] 80 [1+] 39 [2+] 31 [3+] 12 [4+] 9 [5+] 0
Hits/KSLOC@level+ = [0+] 15.7109 [1+] 7.65907 [2+] 6.08798 [3+] 2.35664 [4+] 1.76748 [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.