Check Point Advisories

PhpSpreadsheet XML External Entity Injection (CVE-2018-19277)

Vulnerability
Protection

Check Point Reference:	CPAI-2019-0009
Date Published:	3 Jan 2019
Severity:	High
Last Updated:	Tuesday 15 January, 2019
Source:
Industry Reference:	CVE-2018-19277
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	PhpSpreadsheet up to 1.5.0
Vulnerability Description	An XML external entity injection vulnerability exists in PhpSpreadsheet library. The vulnerability is due to a failure to properly handle external entity references in XML files. A successful exploitation of this vulnerability could result in the disclosure of file contents from the target 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 PhpSpreadsheet XML External Entity Injection 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: PhpSpreadsheet XML External Entity Injection