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https://github.com/sigmasternchen/php-doc-en
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c37ea4fd5a
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@310022 c90b9560-bf6c-de11-be94-00142212c4b1
68 lines
2.1 KiB
XML
68 lines
2.1 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<section xml:id="mongo.security" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<title>Security</title>
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<section>
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<title>Request Injection Attacks</title>
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<para>
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If you are passing <literal>$_GET</literal> parameters to your queries, make
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sure that they are cast to strings first. Users can insert associative
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arrays in GET requests, which could then become unwanted $-queries.
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</para>
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<para>
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A fairly innocuous example: suppose you are looking up a user's information
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with the request <emphasis>http://www.example.com?username=bob</emphasis>.
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Your application does the query
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<literal>$collection->find(array("username" => $_GET['username']))</literal>.
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</para>
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<para>
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Someone could subvert this by getting
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<emphasis>http://www.example.com?username[$ne]=foo</emphasis>, which PHP
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will magically turn into an associative array, turning your query into
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<literal>$collection->find(array("username" => array('$ne' => "foo")))</literal>,
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which will return all users not named "foo" (all of your users, probably).
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</para>
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<para>
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This is a fairly easy attack to defend against: make sure $_GET's parameters
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are the type you expect before you send them to the database (cast them to
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strings, in this case).
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</para>
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<para>
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Thanks to <link xlink:href="&url.mongodb.injection;">Phil</link> for pointing this out.
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</para>
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<para>
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See <link xlink:href="&url.mongodb.dochub.security;">the main documentation</link>
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for more information about SQL-injection-like issues with MongoDB.
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</para>
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</section>
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</section>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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