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Date: Sat, 16 Apr 2016 13:59:06 +0530
From: shravan kumar <cor3sm4sh3r@...il.com>
To: oss-security@...ts.openwall.com
Subject: Reflected XSS Vulnerability in Wordpress Custom-metas plugin 1.5.1
Hello ,
I would like to disclose a XSS vulnerability in Custom-metas plugin version
1.5.1 .
The Plugin can be found at https://wordpress.org/plugins/custom-metas/
Reproduction steps:
- Install the plugin custom-metas
- Log in to wp-admin as administrator (tested on firefox)
- Pass the XSS payload as GET parameter to the
/wp-admin/admin.php?page=custom-metas&paged=<XSS payload here>
- example
http://targetip/WPinstallationdir/wp-admin/admin.php?page=custom-metas&paged=
"><script>alert(1);</script>
- you will see a alert box.
Technical details:
This vulnerability is due to display of unsanitized GET parameters, which
are directly displayed on the page with-out any filters.
The vulnerable page is
/wp-content/plugins/custom-metas/tpl/meta-data-form-multiple.php
The Code responsible for the vulnerability is
LINE 10
$currentPageNo = ( isset($_GET['paged']) && $_GET['paged'] != "")?
$_GET['paged']:1;
the currentPageNo variable is set using $_GET['paged'] .
It is then displayed in unsafe manner i.e without any filters. in following
line of code
LINE 43
<input type="text" size="2" value="<?php echo $currentPageNo;?>"
name="paged" title="Current page" id="postCurrent" class="current-page" />
of <span class="total-pages"><?php echo $tPostNumCount; ?></span>
--
Shravan Kumar
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