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Wordpress Pinboard theme XSS
From: Henrique Montenegro <typoon () gmail com>
Date: Sat, 9 Feb 2013 11:47:18 -0200


I am writing to notify you about a XSS I have found in the free Pinboard
1.0.6 theme for Wordpress. This XSS happens in one of the administration
pages so it can only be triggered by authenticated users.

Here is the part of the code that is compromised

<?php $tab = ( isset( $_GET['tab'] ) ? $_GET['tab'] : 'general' ); ?>
    <input name="pinboard_theme_options[submit-<?php echo $tab; ?>]"
type="submit" class="button-primary" value="<?php _e( 'Save Settings',
'pinboard' ); ?>" />
    <input name="pinboard_theme_options[reset-<?php echo $tab; ?>]"
type="submit" class="button-secondary" value="<?php _e( 'Reset Defaults',
'pinboard' ); ?>" />

The issue happens because the variable $_GET['tab'] is not being properly
escaped, causing the issue.

Here is a proof of concept:


For accessing the URL directly, Firefox should be used as Chrome seems to
have some anti-XSS protections in place.

Could a CVE please be assigned to this?



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