Cross-Site Scripting Vulnerability in osTicket Software by osTicket
CVE-2019-11537

6.1MEDIUM

Key Information:

Vendor

Osticket

Status
Osticket
Vendor
CVE Published:
25 April 2019

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2019-11537?

An XSS vulnerability exists in osTicket versions earlier than 1.12, where a crafted CSV file uploaded by an agent manager can trigger malicious scripts through error messages generated in file upload components. Specifically, endpoints like /upload/file.php, /upload/scp/users.php?do=import-users, and /upload/scp/ajax.php/users/import are vulnerable. This flaw can potentially lead to local file inclusion, allowing attackers to exploit the system further and compromise data integrity.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2019-11537 - Proof of Concept

CVE-2019-11537 - Proof of Concept

CVE-2019-11537 - Proof of Concept

References

https://www.exploit-db.com/exploits/46753/
exploitx_refsource_EXPLOIT-DB
https://github.com/osTicket/osTicket/pull/4869
x_refsource_MISC
https://pentest.com.tr/exploits/osTicket-v1-11-XSS-to-LFI...
x_refsource_MISC

EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.