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/ent-1.2debian/chisq.c Examining data/ent-1.2debian/iso8859.c Examining data/ent-1.2debian/iso8859.h Examining data/ent-1.2debian/randtest.h Examining data/ent-1.2debian/ent.c Examining data/ent-1.2debian/randtest.c FINAL RESULTS: data/ent-1.2debian/ent.c:75:12: [3] (buffer) getopt: Some older implementations do not protect against internal buffer overflows (CWE-120, CWE-20). Check implementation on installation, or limit the size of all string inputs. static int getopt(int argc, char *argv[], char *opts) data/ent-1.2debian/ent.c:114:23: [3] (buffer) getopt: Some older implementations do not protect against internal buffer overflows (CWE-120, CWE-20). Check implementation on installation, or limit the size of all string inputs. while ((opt = getopt(argc, argv, "bcftu?BCFTU")) != -1) { data/ent-1.2debian/ent.c:144:22: [2] (misc) fopen: Check when opening files - can an attacker redirect it (via symlinks), force the opening of special file type (e.g., device files), move things around to create a race condition, control its ancestors, or change its contents? (CWE-362). if ((fp = fopen(argv[optind], "rb")) == NULL) { data/ent-1.2debian/iso8859.c:6:10: [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. unsigned char isoalpha[32] = { data/ent-1.2debian/iso8859.c:11:10: [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. unsigned char isoupper[32] = { data/ent-1.2debian/iso8859.c:16:10: [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. unsigned char isolower[32] = { data/ent-1.2debian/iso8859.h:4:17: [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. extern unsigned char isoalpha[32], isoupper[32], isolower[32]; data/ent-1.2debian/ent.c:181:15: [1] (buffer) fgetc: Check buffer boundaries if used in a loop including recursive loops (CWE-120, CWE-20). while ((oc = fgetc(fp)) != EOF) { ANALYSIS SUMMARY: Hits = 8 Lines analyzed = 644 in approximately 0.06 seconds (11423 lines/second) Physical Source Lines of Code (SLOC) = 410 Hits@level = [0] 32 [1] 1 [2] 5 [3] 2 [4] 0 [5] 0 Hits@level+ = [0+] 40 [1+] 8 [2+] 7 [3+] 2 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 97.561 [1+] 19.5122 [2+] 17.0732 [3+] 4.87805 [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.