Check Point Advisories

XStream Library Insecure Deserialization (CVE-2019-10173)

Check Point Reference: CPAI-2019-1870
Date Published: 26 Feb 2020
Severity: High
Last Updated: Wednesday 26 February, 2020
Source:
Industry Reference:CVE-2019-10173
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? XStream XStream 1.4.10
Vulnerability Description An insecure serialization vulnerability exists in XStream Library. The vulnerability is due to insufficient validation of event handler type in user-supplied XML data. A remote attacker could exploit this vulnerability by sending specially crafted XML file to the affected application. Successful exploitation could allow the attacker to execute arbitrary command under the security context of the process.

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

  1. In the IPS tab, click Protections and find the XStream Library Insecure Deserialization (CVE-2019-10173) 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 Client Enforcement Violation.
Attack Information:  XStream Library Insecure Deserialization (CVE-2019-10173)

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