Check Point Advisories

XStream Remote Code Execution (CVE-2020-26217)

Vulnerability
Protection

Check Point Reference:	CPAI-2020-1285
Date Published:	21 Dec 2020
Severity:	High
Last Updated:	Monday 21 December, 2020
Source:
Industry Reference:	CVE-2020-26217
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	XStream prior to 1.4.14
Vulnerability Description	A remote code execution vulnerability exists in XStream. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected 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 R80 / R77 / R75

In the IPS tab, click Protections and find the XStream Remote Code Execution (CVE-2020-26217) 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 Client Enforcement Violation.
Attack Information: XStream Remote Code Execution (CVE-2020-26217)