exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

osTicket 1.12 File Upload Cross Site Scripting

osTicket 1.12 File Upload Cross Site Scripting
Posted Aug 11, 2019
Authored by Aishwarya Iyer

An issue was discovered in osTicket versions 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.

tags | exploit, xss, file upload
advisories | CVE-2019-14748
SHA-256 | 4aa6bca41dc1a9b95104a9962adaf6cfeb18342762584bfa43d2b396f68308c2

osTicket 1.12 File Upload Cross Site Scripting

Change Mirror Download
 # Exploit Title: osTicket-v1.12 Stored XSS via File Upload
# Vendor Homepage: https://osticket.com/
# Software Link: https://osticket.com/download/
# Exploit Author: Aishwarya Iyer
# Contact: https://twitter.com/aish_9524
# Website: https://about.me/aish_iyer
# Category: webapps
# CVE: CVE-2019-14748

1. Description

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 an attachment.

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14748

2. Proof of Concept

Steps to Reproduce:
- Login to the portal as a non agent user:
- Open a New Ticket
- Select any option from the dropdown menu present under "Help Topic"
- Text box appears, enter details accordingly
- In the section "drop files here or choose them", we would be putting our
payload
- Open any text editor and name the file as test(say) with .html extension.
- Within the file, enter the payload
<script>alert(document.cookie);</script>
- Save the test.html file.
- Now click on drop files here option and enter the test.html file.
- Click on "create ticket" option
- Login with another user(agent)
- Now within the User Directory, go to the user under which the payload has
been put.
- The ticket raised with the name mentioned will be shown under the subject
category.
- Scroll down and the file uploaded will be present below.
- Click on the file, and the payload gets executed which is persistent

3. Reference

https://github.com/osTicket/osTicket/commit/33ed106b1602f559a660a69f931a9d873685d1ba
https://github.com/osTicket/osTicket/releases/tag/v1.12.1
https://github.com/osTicket/osTicket/releases/tag/v1.10.7

4. Solution

The vulnerability has been patched by the vendor in the next release which
is osTicket v1.10.7.


--
Best Regards,
Aishwarya Iyer
https://about.me/aish_iyer
Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    0 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close