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/aggregate-1.6/aggregate.c FINAL RESULTS: data/aggregate-1.6/aggregate.c:73:8: [4] (format) vfprintf: If format strings can be influenced by an attacker, they can be exploited (CWE-134). Use a constant for the format specification. r += vfprintf(stderr, fmt, ap); data/aggregate-1.6/aggregate.c:190:16: [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 ((ch = getopt(argc, argv, "tqvm:o:p:")) != -1) data/aggregate-1.6/aggregate.c:181:3: [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[MAX_buf + 1]; data/aggregate-1.6/aggregate.c:194:29: [2] (integer) atoi: Unless checked, the resulting number can exceed the expected range (CWE-190). If source untrusted, check both minimum and maximum, even if the input had no minus sign (large numbers can roll over into negative number; consider saving to an unsigned value if that is intended). max_prefix_length = atoi(optarg); data/aggregate-1.6/aggregate.c:200:26: [2] (integer) atoi: Unless checked, the resulting number can exceed the expected range (CWE-190). If source untrusted, check both minimum and maximum, even if the input had no minus sign (large numbers can roll over into negative number; consider saving to an unsigned value if that is intended). max_prefix_opt = atoi(optarg); data/aggregate-1.6/aggregate.c:206:33: [2] (integer) atoi: Unless checked, the resulting number can exceed the expected range (CWE-190). If source untrusted, check both minimum and maximum, even if the input had no minus sign (large numbers can roll over into negative number; consider saving to an unsigned value if that is intended). default_prefix_length = atoi(optarg); data/aggregate-1.6/aggregate.c:277:17: [2] (integer) atoi: Unless checked, the resulting number can exceed the expected range (CWE-190). If source untrusted, check both minimum and maximum, even if the input had no minus sign (large numbers can roll over into negative number; consider saving to an unsigned value if that is intended). masklen = atoi(buf + i + 1); ANALYSIS SUMMARY: Hits = 7 Lines analyzed = 463 in approximately 0.02 seconds (23433 lines/second) Physical Source Lines of Code (SLOC) = 327 Hits@level = [0] 4 [1] 0 [2] 5 [3] 1 [4] 1 [5] 0 Hits@level+ = [0+] 11 [1+] 7 [2+] 7 [3+] 2 [4+] 1 [5+] 0 Hits/KSLOC@level+ = [0+] 33.6391 [1+] 21.4067 [2+] 21.4067 [3+] 6.11621 [4+] 3.0581 [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.