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/re2-20201101+dfsg/re2/bitmap256.h
Examining data/re2-20201101+dfsg/re2/bitstate.cc
Examining data/re2-20201101+dfsg/re2/compile.cc
Examining data/re2-20201101+dfsg/re2/dfa.cc
Examining data/re2-20201101+dfsg/re2/filtered_re2.cc
Examining data/re2-20201101+dfsg/re2/filtered_re2.h
Examining data/re2-20201101+dfsg/re2/fuzzing/compiler-rt/include/fuzzer/FuzzedDataProvider.h
Examining data/re2-20201101+dfsg/re2/fuzzing/re2_fuzzer.cc
Examining data/re2-20201101+dfsg/re2/mimics_pcre.cc
Examining data/re2-20201101+dfsg/re2/nfa.cc
Examining data/re2-20201101+dfsg/re2/onepass.cc
Examining data/re2-20201101+dfsg/re2/parse.cc
Examining data/re2-20201101+dfsg/re2/pod_array.h
Examining data/re2-20201101+dfsg/re2/prefilter.cc
Examining data/re2-20201101+dfsg/re2/prefilter.h
Examining data/re2-20201101+dfsg/re2/prefilter_tree.cc
Examining data/re2-20201101+dfsg/re2/prefilter_tree.h
Examining data/re2-20201101+dfsg/re2/prog.cc
Examining data/re2-20201101+dfsg/re2/prog.h
Examining data/re2-20201101+dfsg/re2/re2.cc
Examining data/re2-20201101+dfsg/re2/re2.h
Examining data/re2-20201101+dfsg/re2/regexp.cc
Examining data/re2-20201101+dfsg/re2/regexp.h
Examining data/re2-20201101+dfsg/re2/set.cc
Examining data/re2-20201101+dfsg/re2/set.h
Examining data/re2-20201101+dfsg/re2/simplify.cc
Examining data/re2-20201101+dfsg/re2/sparse_array.h
Examining data/re2-20201101+dfsg/re2/sparse_set.h
Examining data/re2-20201101+dfsg/re2/stringpiece.cc
Examining data/re2-20201101+dfsg/re2/stringpiece.h
Examining data/re2-20201101+dfsg/re2/testing/backtrack.cc
Examining data/re2-20201101+dfsg/re2/testing/charclass_test.cc
Examining data/re2-20201101+dfsg/re2/testing/compile_test.cc
Examining data/re2-20201101+dfsg/re2/testing/dfa_test.cc
Examining data/re2-20201101+dfsg/re2/testing/dump.cc
Examining data/re2-20201101+dfsg/re2/testing/exhaustive1_test.cc
Examining data/re2-20201101+dfsg/re2/testing/exhaustive2_test.cc
Examining data/re2-20201101+dfsg/re2/testing/exhaustive3_test.cc
Examining data/re2-20201101+dfsg/re2/testing/exhaustive_test.cc
Examining data/re2-20201101+dfsg/re2/testing/exhaustive_tester.cc
Examining data/re2-20201101+dfsg/re2/testing/exhaustive_tester.h
Examining data/re2-20201101+dfsg/re2/testing/filtered_re2_test.cc
Examining data/re2-20201101+dfsg/re2/testing/mimics_pcre_test.cc
Examining data/re2-20201101+dfsg/re2/testing/null_walker.cc
Examining data/re2-20201101+dfsg/re2/testing/parse_test.cc
Examining data/re2-20201101+dfsg/re2/testing/possible_match_test.cc
Examining data/re2-20201101+dfsg/re2/testing/random_test.cc
Examining data/re2-20201101+dfsg/re2/testing/re2_arg_test.cc
Examining data/re2-20201101+dfsg/re2/testing/re2_test.cc
Examining data/re2-20201101+dfsg/re2/testing/regexp_benchmark.cc
Examining data/re2-20201101+dfsg/re2/testing/regexp_generator.cc
Examining data/re2-20201101+dfsg/re2/testing/regexp_generator.h
Examining data/re2-20201101+dfsg/re2/testing/regexp_test.cc
Examining data/re2-20201101+dfsg/re2/testing/required_prefix_test.cc
Examining data/re2-20201101+dfsg/re2/testing/search_test.cc
Examining data/re2-20201101+dfsg/re2/testing/set_test.cc
Examining data/re2-20201101+dfsg/re2/testing/simplify_test.cc
Examining data/re2-20201101+dfsg/re2/testing/string_generator.cc
Examining data/re2-20201101+dfsg/re2/testing/string_generator.h
Examining data/re2-20201101+dfsg/re2/testing/string_generator_test.cc
Examining data/re2-20201101+dfsg/re2/testing/tester.cc
Examining data/re2-20201101+dfsg/re2/testing/tester.h
Examining data/re2-20201101+dfsg/re2/tostring.cc
Examining data/re2-20201101+dfsg/re2/unicode_casefold.h
Examining data/re2-20201101+dfsg/re2/unicode_groups.h
Examining data/re2-20201101+dfsg/re2/walker-inl.h
Examining data/re2-20201101+dfsg/testinstall.cc
Examining data/re2-20201101+dfsg/util/benchmark.cc
Examining data/re2-20201101+dfsg/util/benchmark.h
Examining data/re2-20201101+dfsg/util/flags.h
Examining data/re2-20201101+dfsg/util/fuzz.cc
Examining data/re2-20201101+dfsg/util/logging.h
Examining data/re2-20201101+dfsg/util/malloc_counter.h
Examining data/re2-20201101+dfsg/util/mix.h
Examining data/re2-20201101+dfsg/util/mutex.h
Examining data/re2-20201101+dfsg/util/pcre.cc
Examining data/re2-20201101+dfsg/util/pcre.h
Examining data/re2-20201101+dfsg/util/rune.cc
Examining data/re2-20201101+dfsg/util/strutil.cc
Examining data/re2-20201101+dfsg/util/strutil.h
Examining data/re2-20201101+dfsg/util/test.cc
Examining data/re2-20201101+dfsg/util/test.h
Examining data/re2-20201101+dfsg/util/utf.h
Examining data/re2-20201101+dfsg/util/util.h
FINAL RESULTS:
data/re2-20201101+dfsg/util/benchmark.cc:16:9: [4] (format) snprintf:
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.
#define snprintf _snprintf
data/re2-20201101+dfsg/util/benchmark.cc:16:18: [4] (format) _snprintf:
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.
#define snprintf _snprintf
data/re2-20201101+dfsg/util/strutil.cc:11:9: [4] (format) snprintf:
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.
#define snprintf _snprintf
data/re2-20201101+dfsg/util/strutil.cc:11:18: [4] (format) _snprintf:
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.
#define snprintf _snprintf
data/re2-20201101+dfsg/util/strutil.cc:12:9: [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.
#define vsnprintf _vsnprintf
data/re2-20201101+dfsg/util/strutil.cc:104:16: [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.
int result = vsnprintf(space, sizeof(space), format, backup_ap);
data/re2-20201101+dfsg/util/strutil.cc:127:14: [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.
result = vsnprintf(buf, length, format, backup_ap);
data/re2-20201101+dfsg/re2/testing/regexp_benchmark.cc:156:3: [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(1);
data/re2-20201101+dfsg/util/fuzz.cc:16:17: [3] (random) random:
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.
data[j] = random() & 0xFF;
data/re2-20201101+dfsg/re2/fuzzing/compiler-rt/include/fuzzer/FuzzedDataProvider.h:272:10: [2] (buffer) memcpy:
Does not check for buffer overflows when copying to destination (CWE-120).
Make sure destination can always hold the source data.
std::memcpy(result.data(), data_ptr_, num_bytes_to_consume);
data/re2-20201101+dfsg/re2/parse.cc:2186:3: [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 buf[UTFmax];
data/re2-20201101+dfsg/re2/prefilter.cc:392:3: [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 buf[UTFmax];
data/re2-20201101+dfsg/re2/re2.cc:1153:3: [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 buf[kMaxLength+1];
data/re2-20201101+dfsg/re2/re2.cc:1169:3: [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 buf[kMaxLength+1];
data/re2-20201101+dfsg/re2/re2.cc:1184:3: [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 buf[kMaxNumberLength+1];
data/re2-20201101+dfsg/re2/re2.cc:1199:3: [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 buf[kMaxNumberLength+1];
data/re2-20201101+dfsg/re2/re2.cc:1260:3: [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 buf[kMaxNumberLength+1];
data/re2-20201101+dfsg/re2/re2.cc:1275:3: [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 buf[kMaxNumberLength+1];
data/re2-20201101+dfsg/re2/regexp.cc:338:3: [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 tmp[sizeof *this];
data/re2-20201101+dfsg/re2/stringpiece.cc:18:3: [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(buf, data_ + pos, ret);
data/re2-20201101+dfsg/re2/testing/dump.cc:99:7: [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[UTFmax+1];
data/re2-20201101+dfsg/re2/testing/dump.cc:107:9: [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 buf[UTFmax+1];
data/re2-20201101+dfsg/re2/testing/exhaustive3_test.cc:36:3: [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 buf[UTFmax+1];
data/re2-20201101+dfsg/re2/testing/exhaustive_tester.cc:37:10: [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 buf[512];
data/re2-20201101+dfsg/util/benchmark.cc:93:3: [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 mb[100];
data/re2-20201101+dfsg/util/benchmark.cc:94:3: [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 suf[100];
data/re2-20201101+dfsg/util/pcre.cc:827:5: [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(buf, str, n);
data/re2-20201101+dfsg/util/pcre.cc:841:3: [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 buf[kMaxNumberLength+1];
data/re2-20201101+dfsg/util/pcre.cc:858:3: [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 buf[kMaxNumberLength+1];
data/re2-20201101+dfsg/util/pcre.cc:929:3: [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 buf[kMaxNumberLength+1];
data/re2-20201101+dfsg/util/pcre.cc:946:3: [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 buf[kMaxNumberLength+1];
data/re2-20201101+dfsg/util/pcre.cc:967:3: [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 buf[kMaxLength];
data/re2-20201101+dfsg/util/pcre.cc:969:3: [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(buf, str, n);
data/re2-20201101+dfsg/util/rune.cc:186:2: [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[10];
data/re2-20201101+dfsg/util/strutil.cc:97:3: [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 space[1024];
data/re2-20201101+dfsg/re2/stringpiece.h:67:45: [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).
: data_(str), size_(str == NULL ? 0 : strlen(str)) {}
data/re2-20201101+dfsg/re2/stringpiece.h:98:31: [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_ = str == NULL ? 0 : strlen(str);
data/re2-20201101+dfsg/re2/testing/re2_arg_test.cc:101:32: [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).
bool retval = arg.Parse(p, strlen(p)); \
data/re2-20201101+dfsg/re2/testing/re2_test.cc:376:19: [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 patlen = strlen(pattern);
ANALYSIS SUMMARY:
Hits = 39
Lines analyzed = 30235 in approximately 0.67 seconds (44900 lines/second)
Physical Source Lines of Code (SLOC) = 20717
Hits@level = [0] 81 [1] 4 [2] 26 [3] 2 [4] 7 [5] 0
Hits@level+ = [0+] 120 [1+] 39 [2+] 35 [3+] 9 [4+] 7 [5+] 0
Hits/KSLOC@level+ = [0+] 5.79234 [1+] 1.88251 [2+] 1.68943 [3+] 0.434426 [4+] 0.337887 [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.