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/utfout-0.0.1/src/utfout.c
FINAL RESULTS:
data/utfout-0.0.1/src/utfout.c:185:11: [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.
ret = vsnprintf (p, len-ret, fmt, ap);
data/utfout-0.0.1/src/utfout.c:1271:22: [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.
while ((option = getopt_long (argc, argv,
data/utfout-0.0.1/src/utfout.c:1410:9: [3] (random) srand:
This function is not sufficiently random for security-related functions
such as key and nonce creation (CWE-327). Use a more secure technique for
acquiring random values.
srand (seed);
data/utfout-0.0.1/src/utfout.c:164:5: [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 buffer[1024];
data/utfout-0.0.1/src/utfout.c:165:5: [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 wbuffer[1024];
data/utfout-0.0.1/src/utfout.c:268:5: [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 buffer[8]; \
data/utfout-0.0.1/src/utfout.c:391:12: [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 (_PATH_TTY, O_RDWR);
data/utfout-0.0.1/src/utfout.c:508:25: [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 buffer[3+1];
data/utfout-0.0.1/src/utfout.c:550:25: [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 buffer[8+1];
data/utfout-0.0.1/src/utfout.c:584:25: [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 buffer[2+1];
data/utfout-0.0.1/src/utfout.c:741:12: [2] (integer) atol:
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).
secs = atol (str);
data/utfout-0.0.1/src/utfout.c:938:5: [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 buffer[WCHAR_BUFSIZE];
data/utfout-0.0.1/src/utfout.c:1340:26: [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).
repeat = atoi (optarg);
data/utfout-0.0.1/src/utfout.c:1366:27: [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).
last_fd = atoi (optarg);
data/utfout-0.0.1/src/utfout.c:1377:23: [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).
exit (atoi (optarg));
data/utfout-0.0.1/src/utfout.c:740:11: [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/utfout-0.0.1/src/utfout.c:954:10: [1] (buffer) wcslen:
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 ((wcslen (range) >= 24
data/utfout-0.0.1/src/utfout.c:1009:29: [1] (buffer) wcslen:
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).
} else if ((wcslen (range) >= 16
data/utfout-0.0.1/src/utfout.c:1049:29: [1] (buffer) wcslen:
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).
} else if ((wcslen (range) >= 14
data/utfout-0.0.1/src/utfout.c:1085:29: [1] (buffer) wcslen:
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).
} else if ((wcslen (range) >= 12
data/utfout-0.0.1/src/utfout.c:1117:29: [1] (buffer) wcslen:
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).
} else if ((wcslen (range) >= 6
ANALYSIS SUMMARY:
Hits = 21
Lines analyzed = 1428 in approximately 0.05 seconds (31366 lines/second)
Physical Source Lines of Code (SLOC) = 888
Hits@level = [0] 16 [1] 6 [2] 12 [3] 2 [4] 1 [5] 0
Hits@level+ = [0+] 37 [1+] 21 [2+] 15 [3+] 3 [4+] 1 [5+] 0
Hits/KSLOC@level+ = [0+] 41.6667 [1+] 23.6486 [2+] 16.8919 [3+] 3.37838 [4+] 1.12613 [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.