Check Point Advisories

Oracle Java SE GSUB FeatureCount Buffer Overflow

Vulnerability
Protection

Check Point Reference:	CPAI-2014-1769
Date Published:	19 Aug 2014
Severity:	High
Last Updated:	Sunday 14 February, 2016
Source:	Oracle
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Oracle Java Runtime Environment (JRE) 5.0 Update 41 and earlier Oracle Java Runtime Environment (JRE) 6 Update 43 and earlier Oracle Java Runtime Environment (JRE) 7 Update 17 and earlier
Vulnerability Description	A heap buffer overflow vulnerability exists in Oracle Java. The vulnerability is due to the font parsing code failing to check the "FeatureCount" value of the GSUB table used in controlling heap memory allocation. A remote unauthenticated attacker can exploit this vulnerability by persuading users to load a malicious web page containing a java applet.

Protection Overview

This protection will detect and block 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 Oracle Java SE GSUB FeatureCount Buffer Overflow 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: Oracle Protection Violation.
Attack Information: Oracle Java SE GSUB FeatureCount buffer overflow