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/rarpd-0.981107/rarpd.c FINAL RESULTS: data/rarpd-0.981107/rarpd.c:214:6: [4] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. sprintf(tmpa, "%s", inet_ntoa(*(struct in_addr*)&addr)); data/rarpd-0.981107/rarpd.c:613:16: [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 ((opt = getopt(argc, argv, "aAb:dvoe")) != EOF) { data/rarpd-0.981107/rarpd.c:63:2: [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 name[IFNAMSIZ]; data/rarpd-0.981107/rarpd.c:165:4: [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(ifl->lladdr, ifrp->ifr_hwaddr.sa_data, sizeof(u_int8_t) * ETH_ALEN); data/rarpd-0.981107/rarpd.c:213:6: [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 tmpa[64]; data/rarpd-0.981107/rarpd.c:234:2: [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 name[9]; data/rarpd-0.981107/rarpd.c:236:2: [2] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. Risk is low because the source has a constant maximum length. sprintf(name, "%08X", (__u32)ntohl(addr)); data/rarpd-0.981107/rarpd.c:311:4: [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 ename[256]; data/rarpd-0.981107/rarpd.c:331:5: [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(emap.lladdr, lladdr, sizeof(u_int8_t) * ETH_ALEN); data/rarpd-0.981107/rarpd.c:369:2: [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(*ptr_p, ifl->lladdr, alen); data/rarpd-0.981107/rarpd.c:393:2: [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(*ptr_p, &laddr, 4); data/rarpd-0.981107/rarpd.c:419:2: [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(req.arp_ha.sa_data, lladdr, lllen); data/rarpd-0.981107/rarpd.c:420:2: [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(req.arp_dev, ifl->name, IFNAMSIZ); data/rarpd-0.981107/rarpd.c:432:11: [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 buf[1024]; data/rarpd-0.981107/rarpd.c:439:2: [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 tmpbuf[16 * 3], tmpname[IFNAMSIZ]; data/rarpd-0.981107/rarpd.c:482:5: [2] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. Risk is low because the source has a constant maximum length. sprintf(ptr, ":%02x", sll.sll_addr[i]); data/rarpd-0.981107/rarpd.c:485:5: [2] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. Risk is low because the source has a constant maximum length. sprintf(ptr, "%02x", sll.sll_addr[i]); data/rarpd-0.981107/rarpd.c:495:4: [2] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. Risk is low because the source has a constant maximum length. sprintf(tmpname, "if%d", sll.sll_ifindex); data/rarpd-0.981107/rarpd.c:566:2: [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(ptr, &rmap->ipaddr, 4); data/rarpd-0.981107/rarpd.c:721:8: [2] (misc) open: 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). fd = open("/dev/null", O_RDWR); data/rarpd-0.981107/rarpd.c:166:4: [1] (buffer) strncpy: Easily used incorrectly; doesn't always \0-terminate or check for invalid pointers [MS-banned] (CWE-120). strncpy(ifl->name, ifrp->ifr_name, IFNAMSIZ); data/rarpd-0.981107/rarpd.c:492:4: [1] (buffer) strncpy: Easily used incorrectly; doesn't always \0-terminate or check for invalid pointers [MS-banned] (CWE-120). strncpy(tmpname, ifl->name, IFNAMSIZ); data/rarpd-0.981107/rarpd.c:660:3: [1] (buffer) strncpy: Easily used incorrectly; doesn't always \0-terminate or check for invalid pointers [MS-banned] (CWE-120). strncpy(ifr.ifr_name, ifname, IFNAMSIZ - 1); ANALYSIS SUMMARY: Hits = 23 Lines analyzed = 772 in approximately 0.03 seconds (28581 lines/second) Physical Source Lines of Code (SLOC) = 643 Hits@level = [0] 31 [1] 3 [2] 18 [3] 1 [4] 1 [5] 0 Hits@level+ = [0+] 54 [1+] 23 [2+] 20 [3+] 2 [4+] 1 [5+] 0 Hits/KSLOC@level+ = [0+] 83.9813 [1+] 35.7698 [2+] 31.1042 [3+] 3.11042 [4+] 1.55521 [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.