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/ifmetric-0.3/src/getifn.h Examining data/ifmetric-0.3/src/getifn.c Examining data/ifmetric-0.3/src/nlrequest.h Examining data/ifmetric-0.3/src/nlrequest.c Examining data/ifmetric-0.3/src/ifmetric.c FINAL RESULTS: data/ifmetric-0.3/src/getifn.c:8:5: [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 ifname[IFNAMSIZ+1]; data/ifmetric-0.3/src/getifn.c:48:9: [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 a[1024]; data/ifmetric-0.3/src/ifmetric.c:55:25: [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(copy, n, n->nlmsg_len); data/ifmetric-0.3/src/ifmetric.c:77:9: [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 a[1024]; data/ifmetric-0.3/src/ifmetric.c:202:25: [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). metric = argc > 2 ? atoi(argv[2]) : 0; data/ifmetric-0.3/src/nlrequest.c:47:9: [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 replybuf[4096]; data/ifmetric-0.3/src/nlrequest.c:110:5: [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 (RTA_DATA(rta), data, alen); data/ifmetric-0.3/src/nlrequest.c:133:5: [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 (RTA_DATA(rta), &data, 4); data/ifmetric-0.3/src/getifn.c:60:5: [1] (buffer) strncpy: Easily used incorrectly; doesn't always \0-terminate or check for invalid pointers [MS-banned] (CWE-120). strncpy(gi.ifname, iface, IFNAMSIZ); ANALYSIS SUMMARY: Hits = 9 Lines analyzed = 448 in approximately 0.04 seconds (11924 lines/second) Physical Source Lines of Code (SLOC) = 322 Hits@level = [0] 18 [1] 1 [2] 8 [3] 0 [4] 0 [5] 0 Hits@level+ = [0+] 27 [1+] 9 [2+] 8 [3+] 0 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 83.8509 [1+] 27.9503 [2+] 24.8447 [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.