SB2017101615 - Multiple vulnerabilities in osTicket.com osTicket
Published: October 16, 2017 Updated: November 18, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Cross-site scripting (CVE-ID: CVE-2019-13397)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can permanently inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
2) Arbitrary file upload (CVE-ID: CVE-2017-15580)
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.
3) Cross-site request forgery (CVE-ID: CVE-2017-15362)
The vulnerability allows a remote attacker to perform cross-site request forgery attacks.
The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.
Remediation
Install update from vendor's website.
References
- https://medium.com/@sarapremashish/osticket-1-10-1-unauthenticated-stored-xss-allows-an-attacker-to-gain-admin-privileges-6a0348761a3a
- 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/
- https://becomepentester.blogspot.ae/2017/10/osTicket-XSS-CVE-2017-15362.html