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/rolldice-1.16/main.c Examining data/rolldice-1.16/rolldice.c Examining data/rolldice-1.16/rolldice.h Examining data/rolldice-1.16/version.h FINAL RESULTS: data/rolldice-1.16/main.c:188:16: [3] (buffer) getopt_long: 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((c = getopt_long(argc, argv, "hvrusi", long_opts, NULL)) != -1) { data/rolldice-1.16/rolldice.c:30:16: [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((ran_dev = fopen("/dev/random", "r")) == NULL) { data/rolldice-1.16/rolldice.c:35:24: [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). else if((ran_dev = fopen("/dev/urandom", "r")) == NULL) { ANALYSIS SUMMARY: Hits = 3 Lines analyzed = 545 in approximately 0.02 seconds (22702 lines/second) Physical Source Lines of Code (SLOC) = 376 Hits@level = [0] 30 [1] 0 [2] 2 [3] 1 [4] 0 [5] 0 Hits@level+ = [0+] 33 [1+] 3 [2+] 3 [3+] 1 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 87.766 [1+] 7.97872 [2+] 7.97872 [3+] 2.65957 [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.