Check Point Advisories

LibreOffice RTF parser Use After Free (CVE-2016-4324)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0590
Date Published:	6 Jul 2016
Severity:	High
Last Updated:	Thursday 14 July, 2016
Source:
Industry Reference:	CVE-2016-4324
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	LibreOffice prior to 5.1.4
Vulnerability Description	A use-after-free vulnerability exists in the RTF parser of the LibreOffice office suite. The vulnerability is due to invalid parsing of stylesheets in RTF files. By enticing the user to open a specially crafted RTF file, an attacker could exploit this vulnerability 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 LibreOffice RTF parser Use After Free 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: Content Protection Violation.
Attack Information: LibreOffice RTF parser Use After Free