CVE-2019-14748
MediumCVSS 5.4Exploitation Probability (EPSS)
High risk84th percentile - higher than 84% of all known CVEs
Summary
In osTicket before version 1.10.7 and 1.12.x before 1.12.1, a vulnerability was found in the ticket creation form. Users can upload files, but content checks are insufficient and the server response is not handled properly, leading to persistent XSS. An attacker can upload an .html file, and the Content-Disposition header is set to inline instead of attachment, enabling cookie theft or other malicious actions.
Risk Assessment
The risk for the organization includes the possibility of session theft through persistent XSS, which can lead to unauthorized access to the help desk system and leakage of sensitive data.
Recommendation
Immediately update osTicket to version 1.10.7 or 1.12.1, and configure the web server to enforce Content-Disposition: attachment for uploaded files.
Original NVD description (English source)
An issue was discovered in osTicket before 1.10.7 and 1.12.x before 1.12.1. The Ticket creation form allows users to upload files along with queries. It was found that the file-upload functionality has fewer (or no) mitigations implemented for file content checks; also, the output is not handled properly, causing persistent XSS that leads to cookie stealing or malicious actions. For example, a non-agent user can upload a .html file, and Content-Disposition will be set to inline instead of attachment.