Check Point Advisories

Ivanti Avalanche Notification Server Insecure Deserialization

Vulnerability
Protection

Check Point Reference:	CPAI-2023-0918
Date Published:	24 Oct 2023
Severity:	Critical
Last Updated:	Tuesday 24 October, 2023
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Ivanti Avalanche prior to 6.3.3
Vulnerability Description	An insecure deserialization vulnerability exists in the Ivanti Avalanche Notification Server. Successful exploitation could result in remote code execution in the context of SYSTEM.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Ivanti Avalanche Notification Server Insecure Deserialization protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Server Enforcement Violation.
Attack Information: Ivanti Avalanche Notification Server Insecure Deserialization