Check Point Advisories

Workaround for Microsoft Embedded OpenType Font Heap Overflow Vulnerability (MS10-001)

Vulnerability
Protection

Check Point Reference:	SBP-2010-03
Date Published:	12 Jan 2010
Severity:	Critical
Last Updated:	Friday 01 January, 2010
Source:	Microsoft Security Bulletin MS10-001
Industry Reference:	CVE-2010-0018
Protection Provided by:
Who is Vulnerable?	Microsoft Windows 2000 SP4 Windows XP SP2 Windows XP SP3 Windows XP Professional x64 Edition SP2 Windows Server 2003 SP2 Windows Server 2003 x64 Edition SP2 Windows Server 2003 with SP2 (Itanium) Windows Vista Windows Vista SP1 Windows Vista SP2 Windows Vista x64 Edition Windows Vista x64 Edition SP1 Windows Vista x64 Edition SP2 Windows Server 2008 for 32-bit Systems Windows Server 2008 for 32-bit Systems SP2 Windows Server 2008 for x64-based Systems Windows Server 2008 for x64-based Systems SP2 Windows Server 2008 (Itanium) Windows Server 2008 (Itanium) SP2 Windows 7 for 32-bit Systems Windows 7 for x64-based Systems Windows Server 2008 R2 for x64-based Systems Windows Server 2008 R2 (Itanium)
Vulnerability Description	A remote code execution vulnerability has been reported in the way that the Microsoft Windows Embedded OpenType (EOT) Font Engine decompresses specially crafted EOT fonts. EOT fonts are a compact form of fonts designed for use on web pages. A remote attacker can exploit this vulnerability via a specially crafted EOT file. Successful exploitation may allow execution of arbitrary code on a vulnerable system.
Update/Patch Avaliable	Apply patches: Microsoft Security Bulletin MS10-001
Vulnerability Details	The vulnerability is due to an integer overflow in the Embeded OpenType Font Engine when it decompresses specially crafted files and content containing embedded fonts. A remote attacker may exploit this issue via a malformed EOT file. Successful exploitation of this issue allows execution of arbitrary code once the malformed file is being opened or previewed on an affected system.

Protection Overview

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