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/r-cran-base64url-1.4/src/base64.c Examining data/r-cran-base64url-1.4/src/init.c Examining data/r-cran-base64url-1.4/src/base32.c FINAL RESULTS: data/r-cran-base64url-1.4/src/base32.c:31:14: [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 b32str[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"; data/r-cran-base64url-1.4/src/base32.c:86:21: [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 signed char b32[0x100] = { data/r-cran-base64url-1.4/src/base64.c:39:23: [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 unsigned char pr2six[256] = { data/r-cran-base64url-1.4/src/base32.c:262:28: [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). R_len_t n_in = strlen(plain); data/r-cran-base64url-1.4/src/base32.c:298:28: [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). R_len_t n_in = strlen(encoded); data/r-cran-base64url-1.4/src/base64.c:149:68: [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). char *encoded = malloc(sizeof(char) * Base64encode_len(strlen(plain))); data/r-cran-base64url-1.4/src/base64.c:150:42: [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). Base64encode(encoded, plain, strlen(plain)); ANALYSIS SUMMARY: Hits = 7 Lines analyzed = 528 in approximately 0.03 seconds (17284 lines/second) Physical Source Lines of Code (SLOC) = 403 Hits@level = [0] 0 [1] 4 [2] 3 [3] 0 [4] 0 [5] 0 Hits@level+ = [0+] 7 [1+] 7 [2+] 3 [3+] 0 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 17.3697 [1+] 17.3697 [2+] 7.44417 [3+] 0 [4+] 0 [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.