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/ipcalc-ng-0.4.1/ipcalc-reverse.c
Examining data/ipcalc-ng-0.4.1/ipcalc-utils.c
Examining data/ipcalc-ng-0.4.1/ipcalc.h
Examining data/ipcalc-ng-0.4.1/ipv6.c
Examining data/ipcalc-ng-0.4.1/ipv6.h
Examining data/ipcalc-ng-0.4.1/deaggregate.c
Examining data/ipcalc-ng-0.4.1/ipcalc-geoip.c
Examining data/ipcalc-ng-0.4.1/ipcalc-maxmind.c
Examining data/ipcalc-ng-0.4.1/netsplit.c
Examining data/ipcalc-ng-0.4.1/ipcalc.c
FINAL RESULTS:
data/ipcalc-ng-0.4.1/ipcalc-utils.c:27:31: [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.
int __attribute__((__format__(printf, 2, 3))) safe_asprintf(char **strp, const char *fmt, ...)
data/ipcalc-ng-0.4.1/ipcalc.c:722:5: [4] (buffer) sprintf:
Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
vsnprintf.
sprintf(errBuf,
data/ipcalc-ng-0.4.1/ipcalc.c:987:5: [4] (buffer) sprintf:
Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
vsnprintf.
sprintf(errBuf,
data/ipcalc-ng-0.4.1/ipcalc.c:1239:24: [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.
__attribute__ ((format(printf, 3, 4)))
data/ipcalc-ng-0.4.1/ipcalc.c:1276:24: [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.
__attribute__ ((format(printf, 3, 4)))
data/ipcalc-ng-0.4.1/ipcalc.c:1317:24: [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.
__attribute__ ((format(printf, 4, 5)))
data/ipcalc-ng-0.4.1/ipcalc.c:1324:3: [4] (format) vprintf:
If format strings can be influenced by an attacker, they can be exploited
(CWE-134). Use a constant for the format specification.
vprintf(fmt, args);
data/ipcalc-ng-0.4.1/ipcalc.c:1337:24: [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.
__attribute__ ((format(printf, 4, 5)))
data/ipcalc-ng-0.4.1/ipcalc.c:1810:5: [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(ADDRESS_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1817:5: [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(NETMASK_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1824:5: [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(PREFIX_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1831:5: [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(BROADCAST_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1838:5: [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(NETWORK_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1845:5: [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(REVERSEDNS_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1852:5: [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(MINADDR_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1859:5: [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(MAXADDR_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1866:5: [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(ADDRSPACE_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1876:5: [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(ADDRESSES_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1886:5: [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(HOSTNAME_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1893:5: [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(ADDRESS_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1901:6: [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(COUNTRYCODE_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1907:6: [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(COUNTRY_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1916:6: [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(CITY_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.c:1926:6: [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(COORDINATES_NAME"=");
data/ipcalc-ng-0.4.1/ipcalc.h:41:31: [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.
int __attribute__((__format__(printf, 2, 3))) safe_asprintf(char **strp, const char *fmt, ...);
data/ipcalc-ng-0.4.1/ipcalc.h:132:24: [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.
__attribute__ ((format(printf, 3, 4)))
data/ipcalc-ng-0.4.1/ipcalc.h:135:24: [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.
__attribute__ ((format(printf, 3, 4)))
data/ipcalc-ng-0.4.1/ipcalc.h:141:24: [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.
__attribute__ ((format(printf, 4, 5)))
data/ipcalc-ng-0.4.1/ipcalc.h:144:24: [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.
__attribute__ ((format(printf, 4, 5)))
data/ipcalc-ng-0.4.1/ipcalc.c:1397:7: [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.
c = getopt_long(argc, argv, "S:cr:i46abho:gmnpjsvd:", long_options, NULL);
data/ipcalc-ng-0.4.1/deaggregate.c:88:2: [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 namebuf[INET_ADDRSTRLEN + 1] = {0};
data/ipcalc-ng-0.4.1/deaggregate.c:155:2: [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 namebuf[INET6_ADDRSTRLEN + 1] = {0};
data/ipcalc-ng-0.4.1/ipcalc-geoip.c:69:9: [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.
static char err[256] = {0};
data/ipcalc-ng-0.4.1/ipcalc-maxmind.c:69:9: [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.
static char err[256] = {0};
data/ipcalc-ng-0.4.1/ipcalc-maxmind.c:118:21: [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(*output, entry_data->utf8_string, entry_data->data_size);
data/ipcalc-ng-0.4.1/ipcalc-reverse.c:104:2: [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 str[256];
data/ipcalc-ng-0.4.1/ipcalc-reverse.c:124:2: [2] (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). Risk is low because the source is a constant string.
strcpy(&str[j], "ip6.arpa.");
data/ipcalc-ng-0.4.1/ipcalc.c:150:9: [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.
static char hostname[NI_MAXHOST];
data/ipcalc-ng-0.4.1/ipcalc.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(&addr4.sin_addr, addr, sizeof(struct in_addr));
data/ipcalc-ng-0.4.1/ipcalc.c:163:3: [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(&addr6.sin6_addr, addr, sizeof(struct in6_addr));
data/ipcalc-ng-0.4.1/ipcalc.c:188:9: [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.
static char ipname[64];
data/ipcalc-ng-0.4.1/ipcalc.c:586:2: [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 namebuf[INET_ADDRSTRLEN + 1];
data/ipcalc-ng-0.4.1/ipcalc.c:587:2: [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 errBuf[250];
data/ipcalc-ng-0.4.1/ipcalc.c:692:3: [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(&maxhost, &network, sizeof(minhost));
data/ipcalc-ng-0.4.1/ipcalc.c:750:2: [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(mask, &in6, sizeof(*mask));
data/ipcalc-ng-0.4.1/ipcalc.c:756:2: [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 buf[128];
data/ipcalc-ng-0.4.1/ipcalc.c:872:2: [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 buf[128];
data/ipcalc-ng-0.4.1/ipcalc.c:878:3: [2] (buffer) sprintf:
Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
vsnprintf. Risk is low because the source has a constant maximum length.
sprintf(p, "%.2x", (unsigned)ip6->s6_addr[i]);
data/ipcalc-ng-0.4.1/ipcalc.c:895:2: [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 errBuf[250];
data/ipcalc-ng-0.4.1/ipcalc.c:1002:7: [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).
fd = open("/dev/urandom", O_RDONLY);
data/ipcalc-ng-0.4.1/ipcalc.c:1019:2: [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 ipbuf[64];
data/ipcalc-ng-0.4.1/ipcalc.c:1055:3: [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(&net.s_addr, bytes, 4);
data/ipcalc-ng-0.4.1/ipcalc.h:70:2: [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 hosts[64]; /* number of hosts in text */
data/ipcalc-ng-0.4.1/netsplit.c:41:9: [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.
static char quad[64];
data/ipcalc-ng-0.4.1/netsplit.c:49:2: [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 buf[64];
data/ipcalc-ng-0.4.1/netsplit.c:129:9: [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.
static char str[64];
data/ipcalc-ng-0.4.1/netsplit.c:139:2: [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 buf[32];
data/ipcalc-ng-0.4.1/netsplit.c:192:2: [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(&start, &net, sizeof(net));
data/ipcalc-ng-0.4.1/netsplit.c:193:2: [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(&ediff, &sdiff, sizeof(sdiff));
data/ipcalc-ng-0.4.1/deaggregate.c:38:8: [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/ipcalc-ng-0.4.1/ipcalc.c:1006:8: [1] (buffer) read:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
ret = read(fd, ptr, size);
ANALYSIS SUMMARY:
Hits = 61
Lines analyzed = 3359 in approximately 0.15 seconds (22450 lines/second)
Physical Source Lines of Code (SLOC) = 2529
Hits@level = [0] 143 [1] 2 [2] 29 [3] 1 [4] 29 [5] 0
Hits@level+ = [0+] 204 [1+] 61 [2+] 59 [3+] 30 [4+] 29 [5+] 0
Hits/KSLOC@level+ = [0+] 80.6643 [1+] 24.1202 [2+] 23.3294 [3+] 11.8624 [4+] 11.467 [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.