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<title>[34090] trunk/src/wp-includes: Use stricter sanitization for meta query clause keys.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/34090">34090</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/34090","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>boonebgorges</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2015-09-12 21:05:14 +0000 (Sat, 12 Sep 2015)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Use stricter sanitization for meta query clause keys.
By forcing all clause keys to be strings, we make it possible to use strict
comparison when validating values of 'orderby' as passed to `WP_Query`. This
eliminates situations where the presence of numeric clause keys could result
in an improperly validated 'orderby' value.
Props nikolov.tmw.
Fixes <a href="https://core.trac.wordpress.org/ticket/32937">#32937</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesclasswpmetaqueryphp">trunk/src/wp-includes/class-wp-meta-query.php</a></li>
<li><a href="#trunksrcwpincludesqueryphp">trunk/src/wp-includes/query.php</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesclasswpmetaqueryphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/class-wp-meta-query.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp-meta-query.php 2015-09-12 20:57:06 UTC (rev 34089)
+++ trunk/src/wp-includes/class-wp-meta-query.php 2015-09-12 21:05:14 UTC (rev 34090)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -548,8 +548,8 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $meta_type = $this->get_cast_for_type( $_meta_type );
</span><span class="cx" style="display: block; padding: 0 10px"> $clause['cast'] = $meta_type;
</span><span class="cx" style="display: block; padding: 0 10px">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- // Fallback for clause keys is the table alias.
- if ( ! $clause_key ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ // Fallback for clause keys is the table alias. Key must be a string.
+ if ( is_int( $clause_key ) || ! $clause_key ) {
</ins><span class="cx" style="display: block; padding: 0 10px"> $clause_key = $clause['alias'];
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span></span></pre></div>
<a id="trunksrcwpincludesqueryphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/query.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/query.php 2015-09-12 20:57:06 UTC (rev 34089)
+++ trunk/src/wp-includes/query.php 2015-09-12 21:05:14 UTC (rev 34090)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2280,7 +2280,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $allowed_keys = array_merge( $allowed_keys, array_keys( $meta_clauses ) );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if ( ! in_array( $orderby, $allowed_keys ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( ! in_array( $orderby, $allowed_keys, true ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px"> return false;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span></span></pre>
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