Document Title:
===============
Citrix Gateway & Cloud - Session Validation Vulnerability


Date:
=====
2023-07-02


References:
===========
https://www.vulnerability-lab.com/get_content.php?id=2325

Security Video: (Cloud)
https://www.youtube.com/watch?v=vObgOpGpCSM

Security Video: (OnPrem)
https://www.youtube.com/watch?v=RFjRgiW2OWE

Advisory: https://www.vulnerability-lab.com/get_content.php?id=2324

Vulnerability Magazine: https://www.vulnerability-db.com/?q=articles/2023/07/03/citrix-gateway-cloud-mfa-insufficient-session-validation-vulnerability



VL-ID:
=====
2325


Common Vulnerability Scoring System:
====================================
5


Vulnerability Class:
====================
Insufficient Session Validation


Abstract:
=========
The vulnerability laboratory core research team discovered a web vulnerability in the official Citrix Gateway (ADC/NetScaler) 13.0 & 13.1 web-application, Cloud and AAA Feature.


Report-Timeline:
================
2023-07-03: Public Disclosure (Vulnerability Laboratory)


Status:
========
Published


Exploitation-Technique:
=======================
Remote


Severity:
=========
Medium


Details:
========
An insufficient session validation web vulnerability was discovered in the Citrix Gateway (ADC/NetScaler) 13.0 & 13.1 web-application, Cloud and AAA Feature.
The security vulnerability allows remote attackers to bypass the mfa function by hijacking the session data of an active user (non expired session) to followup 
with further compromising attacks.


Credits:
========
Lars Guenther - https://www.vulnerability-lab.com/show.php?user=L.+Guenther
Benjamin Mejri (Kunz) - https://www.vulnerability-lab.com/show.php?user=Benjamin+K.M.


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===========
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