Check Point Advisories

XStream Insecure Deserialization (CVE-2021-21345)

Check Point Reference: CPAI-2021-2079
Date Published: 11 Feb 2024
Severity: Critical
Last Updated: Sunday 11 February, 2024
Source:
Industry Reference:CVE-2021-21345
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? XStream Project prior to 1.4.16
Vulnerability Description An insecure deserialization vulnerability exists in XStream. Successful exploitation could result in remote code execution in the context of the service.

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

  1. In the IPS tab, click Protections and find the XStream Insecure Deserialization (CVE-2021-21345) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Server Enforcement Violation.
Attack Information:  XStream Insecure Deserialization (CVE-2021-21345)

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