Check Point Advisories

Microsoft OpenType Font Validation Elevation of Privilege (MS10-078; CVE-2010-2741)

Vulnerability
Protection

Check Point Reference:	CPAI-2010-281
Date Published:	12 Oct 2010
Severity:	Critical
Last Updated:	Sunday 14 February, 2016
Source:
Industry Reference:	CVE-2010-2741
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	OpenType is a font format developed jointly by Microsoft and Adobe as an extension of Apple's TrueType font format. An OpenType font file contains data, in table format, that comprises either a TrueType or a PostScript outline font. An elevation of privilege vulnerability has been reported in the Windows OpenType Font (OTF) format driver. The vulnerability is due to an error in the OpenType Font (OTF) format driver that fails to properly perform an integer calculation when processing specially crafted OpenType fonts. A remote attacker may exploit this flaw via a specially crafted OTF file. Successful exploitation of this issue may allow the attacker to take complete control over an affected system.

Protection Overview

This protection will detect and block the transferring of malformed OTF files over HTTP.

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 / R71 / R70 / R65

In the IPS tab, click Protections and find the Microsoft OpenType Font Validation Elevation of Privilege (MS10-078) 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: Microsoft OpenType font validation elevation of privilege (MS10-078)