Salutation Responsive 3.0.15 Cross Site Scripting
Posted on 01 August 2017
Details ================ Software: Salutation Responsive WordPress + BuddyPress Theme Version: 3.0.15 Homepage: https://themeforest.net/item/salutation-responsive-wordpress-buddypress-theme/548199 Advisory report: https://security.dxw.com/advisories/stored-xss-salutation-theme/ CVE: Awaiting assignment CVSS: 4.9 (Medium; AV:N/AC:M/Au:S/C:P/I:P/A:N) Description ================ Stored XSS in Salutation Responsive WordPress + BuddyPress Theme could allow logged-in users to do almost anything an admin can Vulnerability ================ The theme contains JavaScript (assets/js/onLoad.js) whichA iterates through .section-tabs aA and puts every href value it finds into jQuery(). jQuery() doesnat just search for elements which match a selector (i.e. jQuery('.section-tabs')), it also creates elements (i.e. jQuery('<div>')). $('.section-tabs').simpleSlideTop(); // ... $.fn.simpleSlideTop = function(opts) { // ... contentID = $(this).attr('href'); $(contentID).hide(); An attacker without the unfiltered_htmlA capability would be able to inject arbitrary HTML as if they had the unfiltered_htmlA capability.A With the ability to inject arbitrary HTML, the attacker is ableA add JavaScript which causes a logged-in administrator user to do almost anything a including creating new user accounts, deleting posts, and more. Proof of concept ================ Click the activate button on the theme Install and activate Revolution Slider plugin Create a new user with role ofA Author (by default, Authors do not possess the unfiltered_html capability) Log in as that user Visit aAdd New Posta screen Switch the editor to aTexta mode Enter the following:A <div class="section-tabs"><a href="<img src=x onerror=alert(1)>">a</a></div> PressA aPublisha Press aView posta You will see an alertbox appear showing the value a1a For comparison,A if the same user account entersA <img src=x onerror=alert(1)> or <script>alert(1)</script>, it will be blocked by WordPress. Mitigations ================ Upgrade to versionA 3.0.16 or later. Disclosure policy ================ dxw believes in responsible disclosure. Your attention is drawn to our disclosure policy: https://security.dxw.com/disclosure/ Please contact us on security@dxw.com to acknowledge this report if you received it via a third party (for example, plugins@wordpress.org) as they generally cannot communicate with us on your behalf. This vulnerability will be published if we do not receive a response to this report with 14 days. Timeline ================ 2017-04-26: Discovered 2017-07-25: Reported via contact form onA http://para.llel.us/ 2017-07-25: Vendor reported issue fixed in 3.0.16 2017-07-31: Advisory published Discovered by dxw: ================ Tom Adams Please visit security.dxw.com for more information.
