CVE-2019-11537 Cross-site scripting in n/a

Medium 6.1 Published 25 Apr 2019 Updated 4 Aug 2024

An agent manager can trigger XSS and local file inclusion by uploading a crafted CSV file to the User Importer in osTicket.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2019-11537?

CVE-2019-11537 is a medium-severity cross-site scripting vulnerability in n/a, published on 25 Apr 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In osTicket before 1.12, XSS exists via /upload/file.php, /upload/scp/users.php?do=import-users, and /upload/scp/ajax.php/users/import if an agent manager user uploads a crafted .csv file to the User Importer, because file contents can appear in an error message. The XSS can lead to local file inclusion.

Weakness: CWE-79

Which versions are affected by CVE-2019-11537?

It affects 1 product.

Products include Enhancesoft Osticket.

How do I fix CVE-2019-11537?

No fix has been published for CVE-2019-11537 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-11537 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-11537 exists.

Public exploit code: 2 Exploit-DB entries.

Sources

Also known as GHSA-wgp7-ggjx-64hq.