#VU55410 Cross-site scripting in osTicket


Published: 2021-07-28

Vulnerability identifier: #VU55410

Vulnerability risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
osTicket
Other software / Other software solutions

Vendor: osTicket.com

Description

The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data when processing SVG images. A remote user can upload an SVG image with arbitrary HTML or JavaScript code inside and execute it 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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

osTicket: 1.0 - 1.x


External links
http://github.com/osTicket/osTicket/releases/tag/v1.14.7
http://github.com/osTicket/osTicket/releases/tag/v1.15.3
http://github.com/osTicket/osTicket/commit/68dcaa2e54e763912097a48cf8e10faaa6081096


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability