Arbitrary file upload in osTicket - CVE-2017-15580
Published: October 23, 2017 / Updated: June 17, 2021
Vulnerability identifier: #VU38020
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2017-15580
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: osTicket.com
Affected software:
osTicket
osTicket
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
osTicket 1.10.1 provides a functionality to upload 'html' files with associated formats. However, it does not properly validate the uploaded file's contents and thus accepts any type of file, such as with a tickets.php request that is modified with a .html extension changed to a .exe extension. An attacker can leverage this vulnerability to upload arbitrary files on the web application having malicious content.
How to mitigate CVE-2017-15580
Install update from vendor's website.
Sources
- http://0day.today/exploits/28864
- http://nakedsecurity.com/cve/CVE-2017-15580/
- https://becomepentester.blogspot.com/2017/10/osTicket-File-Upload-Restrictions-Bypassed-CVE-2017-15580.html
- https://cxsecurity.com/issue/WLB-2017100187
- https://packetstormsecurity.com/files/144747/osticket1101-shell.txt
- https://www.cyber-security.ro/blog/2017/10/25/osticket-1-10-1-shell-upload/
- https://www.exploit-db.com/exploits/45169/