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/bls-standalone-0.20151231/scan/compile.c
Examining data/bls-standalone-0.20151231/scan/config.h
Examining data/bls-standalone-0.20151231/scan/eff.h
Examining data/bls-standalone-0.20151231/scan/effread.c
Examining data/bls-standalone-0.20151231/scan/effwrite.c
Examining data/bls-standalone-0.20151231/scan/globals.c
Examining data/bls-standalone-0.20151231/scan/globals.h
Examining data/bls-standalone-0.20151231/scan/merge.c
Examining data/bls-standalone-0.20151231/scan/merge.h
Examining data/bls-standalone-0.20151231/scan/scan.c
Examining data/bls-standalone-0.20151231/scan/statetable.h
Examining data/bls-standalone-0.20151231/scan/tags.c
Examining data/bls-standalone-0.20151231/scan/tags.h
Examining data/bls-standalone-0.20151231/scan/translate.c
Examining data/bls-standalone-0.20151231/scan/translate.h
FINAL RESULTS:
data/bls-standalone-0.20151231/scan/globals.c:35:2: [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(buffer, sizeof(buffer), format, va);
data/bls-standalone-0.20151231/scan/globals.h:4:70: [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.
void fail(const char *format, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
data/bls-standalone-0.20151231/scan/compile.c:137:16: [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 ((opt = getopt_long(argc, argv, "+o:qd", long_options, NULL)) != -1) {
data/bls-standalone-0.20151231/scan/scan.c:473:16: [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 ((opt = getopt_long(argc, argv, "+hr:", long_options, NULL)) != -1) {
data/bls-standalone-0.20151231/scan/compile.c:74:11: [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 buffer[6 * 256];
data/bls-standalone-0.20151231/scan/compile.c:99:6: [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(buffer + 6 * o + 2, &u, 4);
data/bls-standalone-0.20151231/scan/compile.c:115:4: [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(buffer + 6 * o + 2, &u, 4);
data/bls-standalone-0.20151231/scan/compile.c:154:13: [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 *f = fopen(argv[optind], "r");
data/bls-standalone-0.20151231/scan/effread.c:68:11: [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 buffer[5];
data/bls-standalone-0.20151231/scan/effread.c:77:12: [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).
f->file = fopen(filename, "r");
data/bls-standalone-0.20151231/scan/effwrite.c:66:11: [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 buffer[5];
data/bls-standalone-0.20151231/scan/effwrite.c:79:13: [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).
f->file = fopen(filename, "wb");
data/bls-standalone-0.20151231/scan/effwrite.c:84:2: [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(buffer, "eff", 3);
data/bls-standalone-0.20151231/scan/effwrite.c:128:11: [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 buffer[1];
data/bls-standalone-0.20151231/scan/effwrite.c:136:11: [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 buffer[1 + 4];
data/bls-standalone-0.20151231/scan/effwrite.c:140:2: [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(buffer + 1, &u, 4);
data/bls-standalone-0.20151231/scan/effwrite.c:144:11: [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 buffer[1 + 2];
data/bls-standalone-0.20151231/scan/effwrite.c:148:2: [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(buffer + 1, &u, 2);
data/bls-standalone-0.20151231/scan/effwrite.c:152:11: [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 buffer[1 + 1];
data/bls-standalone-0.20151231/scan/effwrite.c:155:2: [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(buffer + 1, &u, 1);
data/bls-standalone-0.20151231/scan/effwrite.c:160:11: [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 buffer[1 + 1];
data/bls-standalone-0.20151231/scan/effwrite.c:171:11: [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 buffer[1 + 1 + 2];
data/bls-standalone-0.20151231/scan/effwrite.c:178:2: [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(buffer + 2, &un, 2);
data/bls-standalone-0.20151231/scan/globals.c:30:9: [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 buffer[4096];
data/bls-standalone-0.20151231/scan/scan.c:129:11: [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 buffer[6];
data/bls-standalone-0.20151231/scan/scan.c:155:4: [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(&u, buffer + 2, 4);
data/bls-standalone-0.20151231/scan/scan.c:313:3: [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(n->extradata, extractstart, extractlen);
data/bls-standalone-0.20151231/scan/scan.c:326:18: [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.
static unsigned char buffer[102400];
data/bls-standalone-0.20151231/scan/scan.c:504:8: [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(argv[optind], O_RDONLY);
data/bls-standalone-0.20151231/scan/tags.c:178:2: [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(p->pattern, options, len + 1);
data/bls-standalone-0.20151231/scan/translate.c:129:2: [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(ps[count], state, (len+1)*sizeof(bool));
data/bls-standalone-0.20151231/scan/translate.c:176:4: [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(i[thisofs].match, all, sizeof(all));
data/bls-standalone-0.20151231/scan/effread.c:67:19: [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).
size_t typelen = strlen(type);
data/bls-standalone-0.20151231/scan/effwrite.c:65:19: [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).
size_t typelen = strlen(type);
data/bls-standalone-0.20151231/scan/effwrite.c:115:15: [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).
buffer[1] = strlen(type);
data/bls-standalone-0.20151231/scan/scan.c:350:9: [1] (buffer) read:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
got = read(fd, buffer + filleduntil,
data/bls-standalone-0.20151231/scan/tags.c:176:8: [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(options);
data/bls-standalone-0.20151231/scan/tags.c:325:7: [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(line) != got)
data/bls-standalone-0.20151231/scan/tags.c:361:36: [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).
eff_writestring(file, tag->name, strlen(tag->name));
data/bls-standalone-0.20151231/scan/translate.c:167:8: [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(pattern);
ANALYSIS SUMMARY:
Hits = 40
Lines analyzed = 2316 in approximately 0.09 seconds (26687 lines/second)
Physical Source Lines of Code (SLOC) = 1913
Hits@level = [0] 12 [1] 8 [2] 28 [3] 2 [4] 2 [5] 0
Hits@level+ = [0+] 52 [1+] 40 [2+] 32 [3+] 4 [4+] 2 [5+] 0
Hits/KSLOC@level+ = [0+] 27.1824 [1+] 20.9096 [2+] 16.7277 [3+] 2.09096 [4+] 1.04548 [5+] 0
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.