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/yarl-1.4.2/yarl/_quoting.c FINAL RESULTS: data/yarl-1.4.2/yarl/_quoting.c:772:5: [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/yarl-1.4.2/yarl/_quoting.c:10723:18: [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/yarl-1.4.2/yarl/_quoting.c:10724:18: [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/yarl-1.4.2/yarl/_quoting.c:10724:58: [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/yarl-1.4.2/yarl/_quoting.c:10745:16: [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/yarl-1.4.2/yarl/_quoting.c:725:9: [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/yarl-1.4.2/yarl/_quoting.c:1449:8: [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_4yarl_8_quoting_BUFFER[0x2000]; data/yarl-1.4.2/yarl/_quoting.c:2242:14: [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_writer->buf, __pyx_v_writer->size)); data/yarl-1.4.2/yarl/_quoting.c:6807:3: [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___pyx_result->_protected_table[0]), __pyx_t_2, sizeof(__pyx_v___pyx_result->_protected_table[0]) * (16)); data/yarl-1.4.2/yarl/_quoting.c:6825:3: [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___pyx_result->_safe_table[0]), __pyx_t_2, sizeof(__pyx_v___pyx_result->_safe_table[0]) * (16)); data/yarl-1.4.2/yarl/_quoting.c:10757:5: [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/yarl-1.4.2/yarl/_quoting.c:11929:5: [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/yarl-1.4.2/yarl/_quoting.c:11933:9: [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/yarl-1.4.2/yarl/_quoting.c:649:87: [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/yarl-1.4.2/yarl/_quoting.c:770:52: [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/yarl-1.4.2/yarl/_quoting.c:11977:65: [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 = 16 Lines analyzed = 12199 in approximately 0.30 seconds (40081 lines/second) Physical Source Lines of Code (SLOC) = 8047 Hits@level = [0] 0 [1] 3 [2] 8 [3] 4 [4] 1 [5] 0 Hits@level+ = [0+] 16 [1+] 16 [2+] 13 [3+] 5 [4+] 1 [5+] 0 Hits/KSLOC@level+ = [0+] 1.98832 [1+] 1.98832 [2+] 1.61551 [3+] 0.62135 [4+] 0.12427 [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.