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/libnetfilter-queue-1.0.3/examples/nf-queue.c Examining data/libnetfilter-queue-1.0.3/utils/nfqnl_test.c Examining data/libnetfilter-queue-1.0.3/src/internal.h Examining data/libnetfilter-queue-1.0.3/src/libnetfilter_queue.c Examining data/libnetfilter-queue-1.0.3/src/extra/ipv4.c Examining data/libnetfilter-queue-1.0.3/src/extra/pktbuff.c Examining data/libnetfilter-queue-1.0.3/src/extra/ipv6.c Examining data/libnetfilter-queue-1.0.3/src/extra/checksum.c Examining data/libnetfilter-queue-1.0.3/src/extra/tcp.c Examining data/libnetfilter-queue-1.0.3/src/extra/udp.c Examining data/libnetfilter-queue-1.0.3/src/nlmsg.c Examining data/libnetfilter-queue-1.0.3/include/linux/netfilter/nfnetlink_queue.h Examining data/libnetfilter-queue-1.0.3/include/libnetfilter_queue/libnetfilter_queue.h Examining data/libnetfilter-queue-1.0.3/include/libnetfilter_queue/libnetfilter_queue_tcp.h Examining data/libnetfilter-queue-1.0.3/include/libnetfilter_queue/libnetfilter_queue_udp.h Examining data/libnetfilter-queue-1.0.3/include/libnetfilter_queue/libnetfilter_queue_ipv4.h Examining data/libnetfilter-queue-1.0.3/include/libnetfilter_queue/linux_nfnetlink_queue.h Examining data/libnetfilter-queue-1.0.3/include/libnetfilter_queue/libnetfilter_queue_ipv6.h Examining data/libnetfilter-queue-1.0.3/include/libnetfilter_queue/pktbuff.h FINAL RESULTS: data/libnetfilter-queue-1.0.3/examples/nf-queue.c:41:2: [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 buf[MNL_SOCKET_BUFFER_SIZE]; data/libnetfilter-queue-1.0.3/examples/nf-queue.c:133:14: [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). queue_num = atoi(argv[1]); data/libnetfilter-queue-1.0.3/src/extra/ipv4.c:137:2: [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 src_str[INET_ADDRSTRLEN]; data/libnetfilter-queue-1.0.3/src/extra/ipv4.c:138:2: [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 dst_str[INET_ADDRSTRLEN]; data/libnetfilter-queue-1.0.3/src/extra/ipv6.c:130:2: [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 src[INET6_ADDRSTRLEN]; data/libnetfilter-queue-1.0.3/src/extra/ipv6.c:131:2: [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 dst[INET6_ADDRSTRLEN]; data/libnetfilter-queue-1.0.3/src/extra/pktbuff.c:55:2: [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(pkt_data, data, len); data/libnetfilter-queue-1.0.3/src/extra/pktbuff.c:250:2: [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(data + match_offset, rep_buffer, rep_len); data/libnetfilter-queue-1.0.3/src/libnetfilter_queue.c:182:3: [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[NFNL_HEADER_LEN data/libnetfilter-queue-1.0.3/src/libnetfilter_queue.c:625:3: [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[NFNL_HEADER_LEN data/libnetfilter-queue-1.0.3/src/libnetfilter_queue.c:715:3: [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[NFNL_HEADER_LEN data/libnetfilter-queue-1.0.3/src/libnetfilter_queue.c:749:3: [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[NFNL_HEADER_LEN data/libnetfilter-queue-1.0.3/src/libnetfilter_queue.c:776:3: [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[NFNL_HEADER_LEN data/libnetfilter-queue-1.0.3/utils/nfqnl_test.c:93:2: [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 buf[4096] __attribute__ ((aligned)); data/libnetfilter-queue-1.0.3/utils/nfqnl_test.c:96:11: [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). queue = atoi(argv[1]); ANALYSIS SUMMARY: Hits = 15 Lines analyzed = 3645 in approximately 0.15 seconds (23756 lines/second) Physical Source Lines of Code (SLOC) = 1888 Hits@level = [0] 78 [1] 0 [2] 15 [3] 0 [4] 0 [5] 0 Hits@level+ = [0+] 93 [1+] 15 [2+] 15 [3+] 0 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 49.2585 [1+] 7.94492 [2+] 7.94492 [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.