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/courier-unicode-2.1/categoriestab.h Examining data/courier-unicode-2.1/courier-unicode-categories-tab.h Examining data/courier-unicode-2.1/courier-unicode-script-tab.h Examining data/courier-unicode-2.1/courier-unicode.h Examining data/courier-unicode-2.1/eastasianwidth.h Examining data/courier-unicode-2.1/enttest.c Examining data/courier-unicode-2.1/graphemebreaktab.h Examining data/courier-unicode-2.1/graphemetest.c Examining data/courier-unicode-2.1/linebreaktab.h Examining data/courier-unicode-2.1/linebreaktab_internal.h Examining data/courier-unicode-2.1/linebreaktest.C Examining data/courier-unicode-2.1/scriptstab.h Examining data/courier-unicode-2.1/scripttest.c Examining data/courier-unicode-2.1/unicode.c Examining data/courier-unicode-2.1/unicode_categories.c Examining data/courier-unicode-2.1/unicode_graphemebreak.c Examining data/courier-unicode-2.1/unicode_htmlent.c Examining data/courier-unicode-2.1/unicode_htmlent.h Examining data/courier-unicode-2.1/unicode_linebreak.c Examining data/courier-unicode-2.1/unicode_scripts.c Examining data/courier-unicode-2.1/unicode_tablookup.c Examining data/courier-unicode-2.1/unicode_ultcase.c Examining data/courier-unicode-2.1/unicode_ultcasetab.c Examining data/courier-unicode-2.1/unicode_wcwidth.c Examining data/courier-unicode-2.1/unicode_wordbreak.c Examining data/courier-unicode-2.1/unicodebuf.c Examining data/courier-unicode-2.1/unicodecpp.C Examining data/courier-unicode-2.1/unicodetest.c Examining data/courier-unicode-2.1/wordbreaktab.h Examining data/courier-unicode-2.1/wordbreaktab_internal.h Examining data/courier-unicode-2.1/wordbreaktest.C FINAL RESULTS: data/courier-unicode-2.1/unicode.c:83:2: [5] (buffer) strncat: Easily used incorrectly (e.g., incorrectly computing the correct maximum size to add) [MS-banned] (CWE-120). Consider strcat_s, strlcat, snprintf, or automatically resizing strings. Risk is high; the length parameter appears to be a constant, instead of computing the number of characters left. strncat(buf, chset, sizeof(buf)-1); data/courier-unicode-2.1/unicode.c:69:8: [3] (buffer) getenv: Environment variables are untrustable input if they can be set by an attacker. They can have any content and length, and the same variable can be set more than once (CWE-807, CWE-20). Check environment variables carefully before using them. chset=getenv("MM_CHARSET"); data/courier-unicode-2.1/unicode.c:72:9: [3] (buffer) getenv: Environment variables are untrustable input if they can be set by an attacker. They can have any content and length, and the same variable can be set more than once (CWE-807, CWE-20). Check environment variables carefully before using them. chset=getenv("CHARSET"); data/courier-unicode-2.1/enttest.c:22:3: [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[60]; data/courier-unicode-2.1/enttest.c:24:3: [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, n + ii[j].n_start, ii[j].n_size); data/courier-unicode-2.1/unicode.c:25:8: [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 default_chset_buf[32]; data/courier-unicode-2.1/unicode.c:67:2: [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 buf[sizeof(default_chset_buf)]; data/courier-unicode-2.1/unicode.c:85:2: [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(default_chset_buf, buf, sizeof(buf)); data/courier-unicode-2.1/unicode.c:181:2: [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 utf7encodebuf[1024]; data/courier-unicode-2.1/unicode.c:197:2: [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 smapmunge[16]; data/courier-unicode-2.1/unicode.c:527:2: [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 octal[4]; data/courier-unicode-2.1/unicode.c:986:2: [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 buffer[1024]; /* Input buffer */ data/courier-unicode-2.1/unicode.c:1233:3: [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 outbuf[1024]; data/courier-unicode-2.1/unicode.c:1450:3: [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(fragment->fragment, text, cnt); data/courier-unicode-2.1/unicode.c:1505:6: [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(&(*p->cbufptr_ret)[i], data/courier-unicode-2.1/unicode.c:1737:4: [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(p->tail->fragment+p->tail->fragment_size, data/courier-unicode-2.1/unicode.c:1765:3: [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(fragment->fragment, text, cnt*sizeof(char32_t)); data/courier-unicode-2.1/unicode.c:1822:6: [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(&(*p->ucptr_ret)[i], data/courier-unicode-2.1/unicodebuf.c:53:2: [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->ptr + p->len, uc, l * sizeof(char32_t)); data/courier-unicode-2.1/unicodetest.c:41:2: [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 outputbuf[12]; data/courier-unicode-2.1/enttest.c:33:3: [1] (buffer) strcat: Does not check for buffer overflows when concatenating to destination [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or snprintf (warning: strncat is easily misused). Risk is low because the source is a constant character. strcat(buf, "X"); data/courier-unicode-2.1/enttest.c:41:7: [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). buf[strlen(buf)-2]=0; data/courier-unicode-2.1/unicode.c:290:11: [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 l=strlen(unicode_x_imap_modutf7); data/courier-unicode-2.1/unicode.c:323:2: [1] (buffer) strncat: Easily used incorrectly (e.g., incorrectly computing the correct maximum size to add) [MS-banned] (CWE-120). Consider strcat_s, strlcat, snprintf, or automatically resizing strings. strncat(toutf7->smapmunge, smapmunge, sizeof(toutf7->smapmunge)-1); data/courier-unicode-2.1/unicode.c:660:11: [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 l=strlen(unicode_x_imap_modutf7); data/courier-unicode-2.1/unicode.c:1569:27: [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). unicode_convert(h, text, strlen(text)); data/courier-unicode-2.1/unicode.c:1591:27: [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). unicode_convert(h, text, strlen(text)); data/courier-unicode-2.1/unicode.c:1615:27: [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). unicode_convert(h, text, strlen(text)); data/courier-unicode-2.1/unicode.c:1915:37: [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 (unicode_convert_tou_tobuf(str, strlen(str), ANALYSIS SUMMARY: Hits = 29 Lines analyzed = 43547 in approximately 0.90 seconds (48384 lines/second) Physical Source Lines of Code (SLOC) = 40955 Hits@level = [0] 16 [1] 9 [2] 17 [3] 2 [4] 0 [5] 1 Hits@level+ = [0+] 45 [1+] 29 [2+] 20 [3+] 3 [4+] 1 [5+] 1 Hits/KSLOC@level+ = [0+] 1.09877 [1+] 0.708094 [2+] 0.488341 [3+] 0.0732511 [4+] 0.024417 [5+] 0.024417 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.