Cross-site scripting in osTicket.com osTicket



Published: 2019-04-25 | Updated: 2020-07-17
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-11537
CWE-ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
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osTicket
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Vendor osTicket.com

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Cross-site scripting

EUVDB-ID: #VU31088

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2019-11537

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data when processing data passed via /upload/file.php, /upload/scp/users.php?do=import-users, and /upload/scp/ajax.php/users/import if an agent manager user uploads a crafted .csv file to the User Importer, because file contents can appear in an error message. The XSS can lead to local file inclusion. A remote attacker can trick the victim to follow a specially crafted link 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.

Mitigation

Update to version 1.12.

Vulnerable software versions

osTicket: 1.0 - 1.11


CPE2.3 External links

http://github.com/osTicket/osTicket/pull/4869
http://github.com/osTicket/osTicket/releases/tag/v1.12
http://pentest.com.tr/exploits/osTicket-v1-11-XSS-to-LFI.html
http://www.exploit-db.com/exploits/46753
http://www.exploit-db.com/exploits/46753/

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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