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/asyncpg-0.21.0/asyncpg/pgproto/debug.h Examining data/asyncpg-0.21.0/asyncpg/pgproto/hton.h Examining data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c Examining data/asyncpg-0.21.0/asyncpg/pgproto/tohex.h Examining data/asyncpg-0.21.0/asyncpg/protocol/protocol.c Examining data/asyncpg-0.21.0/asyncpg/protocol/record/recordobj.c Examining data/asyncpg-0.21.0/asyncpg/protocol/record/recordobj.h FINAL RESULTS: data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:811:5: [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(__PYX_DEFAULT_STRING_ENCODING, default_encoding_c); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:24947:14: [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. (void)(snprintf(__pyx_v_bufptr, (((size_t)__pyx_v_exponent_chars) + 1), ((char const *)"%d"), ((int)__pyx_v_abs_exponent))); data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:811:5: [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(__PYX_DEFAULT_STRING_ENCODING, default_encoding_c); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:39509:18: [3] (random) setstate: 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. if (!setstate) PyErr_Clear(); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:39510:18: [3] (random) setstate: 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. if (!setstate || __Pyx_setup_reduce_is_named(setstate, __pyx_n_s_setstate_cython)) { data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:39510:58: [3] (random) setstate: 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. if (!setstate || __Pyx_setup_reduce_is_named(setstate, __pyx_n_s_setstate_cython)) { data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:39515:29: [3] (random) setstate: 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. } else if (!setstate || PyErr_Occurred()) { data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:39535:16: [3] (random) setstate: 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. Py_XDECREF(setstate); data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:86407:18: [3] (random) setstate: 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. if (!setstate) PyErr_Clear(); data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:86408:18: [3] (random) setstate: 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. if (!setstate || __Pyx_setup_reduce_is_named(setstate, __pyx_n_s_setstate_cython)) { data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:86408:58: [3] (random) setstate: 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. if (!setstate || __Pyx_setup_reduce_is_named(setstate, __pyx_n_s_setstate_cython)) { data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:86413:29: [3] (random) setstate: 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. } else if (!setstate || PyErr_Occurred()) { data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:86433:16: [3] (random) setstate: 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. Py_XDECREF(setstate); data/asyncpg-0.21.0/asyncpg/pgproto/hton.h:129:5: [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, &nx, sizeof(uint16_t)); data/asyncpg-0.21.0/asyncpg/pgproto/hton.h:137:5: [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, &nx, sizeof(uint32_t)); data/asyncpg-0.21.0/asyncpg/pgproto/hton.h:145:5: [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, &nx, sizeof(uint64_t)); data/asyncpg-0.21.0/asyncpg/pgproto/hton.h:154:5: [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((char *)&nx, buf, sizeof(uint16_t)); data/asyncpg-0.21.0/asyncpg/pgproto/hton.h:170:5: [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((char *)&nx, buf, sizeof(uint32_t)); data/asyncpg-0.21.0/asyncpg/pgproto/hton.h:185:5: [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((char *)&nx, buf, sizeof(uint64_t)); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:764:9: [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 ascii_chars[128]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:973:3: [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 _smallbuf[0x400]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:1042:3: [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 _data[16]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:1976:8: [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 __pyx_v_7asyncpg_7pgproto_7pgproto__hextable[0x100]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:3423:12: [2] (buffer) memcpy: Does not check for buffer overflows when copying to destination (CWE-120). Make sure destination can always hold the source data. (void)(memcpy(__pyx_v_new_buf, __pyx_v_self->_buf, ((size_t)__pyx_v_self->_size))); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:4025:10: [2] (buffer) memcpy: Does not check for buffer overflows when copying to destination (CWE-120). Make sure destination can always hold the source data. (void)(memcpy((__pyx_v_self->_buf + __pyx_v_self->_length), ((void *)__pyx_v_buf->_buf), ((size_t)__pyx_v_buf->_length))); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:4567:10: [2] (buffer) memcpy: Does not check for buffer overflows when copying to destination (CWE-120). Make sure destination can always hold the source data. (void)(memcpy((__pyx_v_self->_buf + __pyx_v_self->_length), ((void *)__pyx_v_data), ((size_t)__pyx_v_len))); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:6386:14: [2] (buffer) memcpy: Does not check for buffer overflows when copying to destination (CWE-120). Make sure destination can always hold the source data. (void)(memcpy(__pyx_v_buf, (__pyx_v_buf0 + __pyx_v_self->_pos0), ((size_t)__pyx_v_nread))); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:6454:14: [2] (buffer) memcpy: Does not check for buffer overflows when copying to destination (CWE-120). Make sure destination can always hold the source data. (void)(memcpy(__pyx_v_buf, (__pyx_v_buf0 + __pyx_v_self->_pos0), ((size_t)__pyx_v_nbytes))); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:12032:10: [2] (buffer) memcpy: Does not check for buffer overflows when copying to destination (CWE-120). Make sure destination can always hold the source data. (void)(memcpy(__pyx_v_u->_data, __pyx_v_buf, 16)); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:12274:12: [2] (buffer) memcpy: Does not check for buffer overflows when copying to destination (CWE-120). Make sure destination can always hold the source data. (void)(memcpy(__pyx_v_self->_data, __pyx_v_buf, 16)); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:12673:3: [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 __pyx_v_out[36]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:12754:3: [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 __pyx_v_out[32]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:16130:97: [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. __pyx_t_6 = PyUnicode_AsUTF8AndSize(__pyx_v_obj, __pyx_v_size); if (unlikely(__pyx_t_6 == ((char const *)NULL))) __PYX_ERR(7, 15, __pyx_L1_error) data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:22878:3: [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 __pyx_v_buf[16]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:24063:3: [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 __pyx_v_smallbuf[0x100]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:35733:10: [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 __pyx_t_3[256]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:36186:3: [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(&(__pyx_v_7asyncpg_7pgproto_7pgproto__hextable[0]), __pyx_t_3, sizeof(__pyx_v_7asyncpg_7pgproto_7pgproto__hextable[0]) * (256)); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:37065:14: [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 const char DIGIT_PAIRS_10[2*10*10+1] = { data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:37077:14: [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 const char DIGIT_PAIRS_8[2*8*8+1] = { data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:37087:14: [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 const char DIGITS_HEX[2*16+1] = { data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:37182:5: [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 digits[sizeof(Py_ssize_t)*3+2]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:37290:13: [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((char *)result_udata + char_pos * result_ukind, udata, (size_t) (ulength * result_ukind)); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:39557:5: [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 warning[200]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:42111:5: [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 ctversion[4], rtversion[4]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:42115:9: [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 message[200]; data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:764:9: [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 ascii_chars[128]; data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:1265:3: [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 _smallbuf[0x400]; data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:25099:106: [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. __pyx_t_1 = __pyx_f_7asyncpg_7pgproto_7pgproto_frb_read(__pyx_v_buf, 4); if (unlikely(__pyx_t_1 == ((char const *)NULL))) __PYX_ERR(5, 300, __pyx_L1_error) data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:82925:13: [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((char *)result_udata + char_pos * result_ukind, udata, (size_t) (ulength * result_ukind)); data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:83505:14: [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 const char DIGIT_PAIRS_10[2*10*10+1] = { data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:83517:14: [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 const char DIGIT_PAIRS_8[2*8*8+1] = { data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:83527:14: [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 const char DIGITS_HEX[2*16+1] = { data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:83622:5: [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 digits[sizeof(enum __pyx_t_7asyncpg_8protocol_8protocol_ProtocolState)*3+2]; data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:86455:5: [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 warning[200]; data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:89998:5: [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 ctversion[4], rtversion[4]; data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:90002:9: [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 message[200]; data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:688:87: [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). #define __Pyx_PyByteArray_FromString(s) PyByteArray_FromStringAndSize((const char*)s, strlen((const char*)s)) data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:809:52: [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). __PYX_DEFAULT_STRING_ENCODING = (char*) malloc(strlen(default_encoding_c) + 1); data/asyncpg-0.21.0/asyncpg/pgproto/pgproto.c:42196:65: [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 __Pyx_PyUnicode_FromStringAndSize(c_str, (Py_ssize_t)strlen(c_str)); data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:688:87: [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). #define __Pyx_PyByteArray_FromString(s) PyByteArray_FromStringAndSize((const char*)s, strlen((const char*)s)) data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:809:52: [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). __PYX_DEFAULT_STRING_ENCODING = (char*) malloc(strlen(default_encoding_c) + 1); data/asyncpg-0.21.0/asyncpg/protocol/protocol.c:90131:65: [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 __Pyx_PyUnicode_FromStringAndSize(c_str, (Py_ssize_t)strlen(c_str)); ANALYSIS SUMMARY: Hits = 62 Lines analyzed = 134082 in approximately 3.40 seconds (39417 lines/second) Physical Source Lines of Code (SLOC) = 80931 Hits@level = [0] 0 [1] 6 [2] 43 [3] 10 [4] 3 [5] 0 Hits@level+ = [0+] 62 [1+] 62 [2+] 56 [3+] 13 [4+] 3 [5+] 0 Hits/KSLOC@level+ = [0+] 0.766085 [1+] 0.766085 [2+] 0.691947 [3+] 0.160631 [4+] 0.0370686 [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.