Microsoft Windows Kernel '.fon' Font File Remote Code Execution Vulnerability

Description

Microsoft Windows is prone to a remote code-execution vulnerability. An attacker can exploit this issue by tricking an unsuspecting victim into viewing a malformed file on a remote network share. Successful exploits can allow attackers to execute arbitrary code with kernel-level privileges. Failed exploit attempts will result in a denial-of-service condition.

Technologies Affected

• Avaya Aura Conferencing 6.0 Standard
• Avaya CallPilot 4.0
• Avaya CallPilot 5.0
• Avaya Communication Server 1000 Telephony Manager 3.0
• Avaya Communication Server 1000 Telephony Manager 4.0
• Avaya Meeting Exchange - Client Registration Server
• Avaya Meeting Exchange - Recording Server
• Avaya Meeting Exchange - Web Conferencing Server
• Avaya Meeting Exchange - Webportal
• Avaya Meeting Exchange 5.0
• Avaya Meeting Exchange 5.0 SP1
• Avaya Meeting Exchange 5.0 SP2
• Avaya Meeting Exchange 5.0.0.0.52
• Avaya Meeting Exchange 5.1
• Avaya Meeting Exchange 5.1 SP1
• Avaya Meeting Exchange 5.2
• Avaya Meeting Exchange 5.2 SP1
• Avaya Meeting Exchange 5.2 SP2
• Avaya Messaging Application Server 4
• Avaya Messaging Application Server 5
• Avaya Messaging Application Server 5.2
• Microsoft Windows 7 Home Premium
• Microsoft Windows 7 Home Premium Sp1 X32
• Microsoft Windows 7 Home Premium Sp1 X64
• Microsoft Windows 7 Professional
• Microsoft Windows 7 RC
• Microsoft Windows 7 Starter
• Microsoft Windows 7 Ultimate
• Microsoft Windows 7 XP Mode
• Microsoft Windows 7 for 32-bit Systems
• Microsoft Windows 7 for 32-bit Systems SP1
• Microsoft Windows 7 for x64-based Systems
• Microsoft Windows 7 for x64-based Systems SP1
• Microsoft Windows Server 2003 Datacenter Edition
• Microsoft Windows Server 2003 Datacenter Edition Itanium
• Microsoft Windows Server 2003 Datacenter Edition Itanium SP1
• Microsoft Windows Server 2003 Datacenter Edition Itanium SP1 Beta 1
• Microsoft Windows Server 2003 Datacenter Edition SP1
• Microsoft Windows Server 2003 Datacenter Edition SP1 Beta 1
• Microsoft Windows Server 2003 Datacenter x64 Edition
• Microsoft Windows Server 2003 Datacenter x64 Edition SP2
• Microsoft Windows Server 2003 Enterprise Edition
• Microsoft Windows Server 2003 Enterprise Edition Itanium
• Microsoft Windows Server 2003 Enterprise Edition Itanium SP1
• Microsoft Windows Server 2003 Enterprise Edition Itanium SP1 Beta 1
• Microsoft Windows Server 2003 Enterprise Edition Itanium SP2
• Microsoft Windows Server 2003 Enterprise Edition Itanium Sp2 Itanium
• Microsoft Windows Server 2003 Enterprise Edition SP1
• Microsoft Windows Server 2003 Enterprise Edition SP1 Beta 1
• Microsoft Windows Server 2003 Enterprise x64 Edition
• Microsoft Windows Server 2003 Enterprise x64 Edition SP2
• Microsoft Windows Server 2003 Gold
• Microsoft Windows Server 2003 Gold Compute Cluster
• Microsoft Windows Server 2003 Gold Datacenter
• Microsoft Windows Server 2003 Gold Enterprise
• Microsoft Windows Server 2003 Gold Itanium
• Microsoft Windows Server 2003 Gold Standard
• Microsoft Windows Server 2003 Gold Storage
• Microsoft Windows Server 2003 Gold X64
• Microsoft Windows Server 2003 Gold X64-Datacenter
• Microsoft Windows Server 2003 Gold X64-Enterprise
• Microsoft Windows Server 2003 Gold X64-Standard
• Microsoft Windows Server 2003 Itanium
• Microsoft Windows Server 2003 Itanium SP1
• Microsoft Windows Server 2003 Itanium SP2
• Microsoft Windows Server 2003 SP1
• Microsoft Windows Server 2003 SP1 Platform SDK
• Microsoft Windows Server 2003 SP2
• Microsoft Windows Server 2003 Sp1 Compute Cluster
• Microsoft Windows Server 2003 Sp1 Storage
• Microsoft Windows Server 2003 Sp1 X64
• Microsoft Windows Server 2003 Sp2 Compute Cluster
• Microsoft Windows Server 2003 Sp2 Datacenter
• Microsoft Windows Server 2003 Sp2 Enterprise
• Microsoft Windows Server 2003 Sp2 Storage
• Microsoft Windows Server 2003 Sp2 X64
• Microsoft Windows Server 2003 Standard Edition
• Microsoft Windows Server 2003 Standard Edition SP1
• Microsoft Windows Server 2003 Standard Edition SP1 Beta 1
• Microsoft Windows Server 2003 Standard Edition SP2
• Microsoft Windows Server 2003 Standard x64 Edition
• Microsoft Windows Server 2003 Terminal Services
• Microsoft Windows Server 2003 Web Edition
• Microsoft Windows Server 2003 Web Edition SP1
• Microsoft Windows Server 2003 Web Edition SP1 Beta 1
• Microsoft Windows Server 2003 Web Edition SP2
• Microsoft Windows Server 2003 x64 SP1
• Microsoft Windows Server 2003 x64 SP2
• Microsoft Windows Server 2008 Datacenter Edition
• Microsoft Windows Server 2008 Datacenter Edition Release Candidate
• Microsoft Windows Server 2008 Datacenter Edition SP2
• Microsoft Windows Server 2008 Enterprise Edition
• Microsoft Windows Server 2008 Enterprise Edition Release Candidate
• Microsoft Windows Server 2008 Enterprise Edition SP2
• Microsoft Windows Server 2008 R2
• Microsoft Windows Server 2008 R2 Datacenter
• Microsoft Windows Server 2008 R2 Datacenter SP1
• Microsoft Windows Server 2008 R2 Enterprise Edition
• Microsoft Windows Server 2008 R2 Itanium
• Microsoft Windows Server 2008 R2 Itanium SP1
• Microsoft Windows Server 2008 R2 Standard Edition
• Microsoft Windows Server 2008 R2 for x64-based Systems SP1
• Microsoft Windows Server 2008 R2 x64
• Microsoft Windows Server 2008 R2 x64 SP1
• Microsoft Windows Server 2008 SP2 Beta
• Microsoft Windows Server 2008 Sp2 Enterprise X64
• Microsoft Windows Server 2008 Standard Edition
• Microsoft Windows Server 2008 Standard Edition Gold
• Microsoft Windows Server 2008 Standard Edition Gold Datacenter
• Microsoft Windows Server 2008 Standard Edition Gold Enterprise
• Microsoft Windows Server 2008 Standard Edition Gold Hpc
• Microsoft Windows Server 2008 Standard Edition Gold Itanium
• Microsoft Windows Server 2008 Standard Edition Gold Standard
• Microsoft Windows Server 2008 Standard Edition Gold Storage
• Microsoft Windows Server 2008 Standard Edition Gold Web
• Microsoft Windows Server 2008 Standard Edition Itanium
• Microsoft Windows Server 2008 Standard Edition R2
• Microsoft Windows Server 2008 Standard Edition R2 SP1
• Microsoft Windows Server 2008 Standard Edition Release Candidate
• Microsoft Windows Server 2008 Standard Edition SP2
• Microsoft Windows Server 2008 Standard Edition Sp2 Hpc
• Microsoft Windows Server 2008 Standard Edition Sp2 Storage
• Microsoft Windows Server 2008 Standard Edition Sp2 Web
• Microsoft Windows Server 2008 Standard Edition X64
• Microsoft Windows Server 2008 for 32-bit Systems
• Microsoft Windows Server 2008 for 32-bit Systems SP2
• Microsoft Windows Server 2008 for Itanium-based Systems
• Microsoft Windows Server 2008 for Itanium-based Systems R2
• Microsoft Windows Server 2008 for Itanium-based Systems SP2
• Microsoft Windows Server 2008 for x64-based Systems
• Microsoft Windows Server 2008 for x64-based Systems R2
• Microsoft Windows Server 2008 for x64-based Systems SP2
• Microsoft Windows Vista 1.0
• Microsoft Windows Vista 2.0
• Microsoft Windows Vista 3.0
• Microsoft Windows Vista
• Microsoft Windows Vista Beta 1
• Microsoft Windows Vista Beta 2
• Microsoft Windows Vista Beta
• Microsoft Windows Vista Business 64-bit edition
• Microsoft Windows Vista Business 64-bit edition SP1
• Microsoft Windows Vista Business 64-bit edition SP2
• Microsoft Windows Vista Business 64-bit edition Sp1 X64-Enterprise
• Microsoft Windows Vista Business 64-bit edition Sp1 X64-Home Premium
• Microsoft Windows Vista Business 64-bit edition Sp1 X64-Ultimate
• Microsoft Windows Vista Business 64-bit edition X64-Enterprise
• Microsoft Windows Vista Business 64-bit edition X64-Ultimate
• Microsoft Windows Vista Business
• Microsoft Windows Vista Business SP1
• Microsoft Windows Vista Business SP2
• Microsoft Windows Vista December CTP
• Microsoft Windows Vista December CTP Gold
• Microsoft Windows Vista December CTP SP1
• Microsoft Windows Vista December CTP SP2
• Microsoft Windows Vista December CTP X64
• Microsoft Windows Vista Enterprise 64-bit edition
• Microsoft Windows Vista Enterprise 64-bit edition SP1
• Microsoft Windows Vista Enterprise 64-bit edition SP2
• Microsoft Windows Vista Enterprise
• Microsoft Windows Vista Enterprise SP1
• Microsoft Windows Vista Enterprise SP2
• Microsoft Windows Vista Home Basic 64-bit edition
• Microsoft Windows Vista Home Basic 64-bit edition SP1
• Microsoft Windows Vista Home Basic 64-bit edition SP2
• Microsoft Windows Vista Home Basic 64-bit edition Sp1 X64
• Microsoft Windows Vista Home Basic 64-bit edition Sp2 X64
• Microsoft Windows Vista Home Basic
• Microsoft Windows Vista Home Basic SP1
• Microsoft Windows Vista Home Basic SP2
• Microsoft Windows Vista Home Premium 64-bit edition
• Microsoft Windows Vista Home Premium 64-bit edition SP1
• Microsoft Windows Vista Home Premium 64-bit edition SP2
• Microsoft Windows Vista Home Premium
• Microsoft Windows Vista Home Premium SP1
• Microsoft Windows Vista Home Premium SP2
• Microsoft Windows Vista SP1
• Microsoft Windows Vista SP2
• Microsoft Windows Vista SP2 Beta
• Microsoft Windows Vista Ultimate 64-bit edition
• Microsoft Windows Vista Ultimate 64-bit edition SP1
• Microsoft Windows Vista Ultimate 64-bit edition SP2
• Microsoft Windows Vista Ultimate
• Microsoft Windows Vista Ultimate SP1
• Microsoft Windows Vista Ultimate SP2
• Microsoft Windows Vista x64 Edition
• Microsoft Windows Vista x64 Edition SP1
• Microsoft Windows Vista x64 Edition SP2
• Microsoft Windows XP 64-bit Edition
• Microsoft Windows XP 64-bit Edition SP1
• Microsoft Windows XP 64-bit Edition Version 2003
• Microsoft Windows XP 64-bit Edition Version 2003 SP1
• Microsoft Windows XP
• Microsoft Windows XP
• Microsoft Windows XP Embedded
• Microsoft Windows XP Embedded SP1
• Microsoft Windows XP Embedded SP2
• Microsoft Windows XP Embedded SP3
• Microsoft Windows XP Gold 64-Bit-2002
• Microsoft Windows XP Gold
• Microsoft Windows XP Gold Embedded
• Microsoft Windows XP Gold Home
• Microsoft Windows XP Gold Media Center
• Microsoft Windows XP Gold Professional
• Microsoft Windows XP Gold Tablet Pc
• Microsoft Windows XP Gold X64
• Microsoft Windows XP Home
• Microsoft Windows XP Home SP1
• Microsoft Windows XP Home SP2
• Microsoft Windows XP Home SP3
• Microsoft Windows XP Media Center Edition 2005 SP3
• Microsoft Windows XP Media Center Edition
• Microsoft Windows XP Media Center Edition SP1
• Microsoft Windows XP Media Center Edition SP2
• Microsoft Windows XP Media Center Edition SP3
• Microsoft Windows XP Professional
• Microsoft Windows XP Professional SP1
• Microsoft Windows XP Professional SP2
• Microsoft Windows XP Professional SP3
• Microsoft Windows XP Professional x64 Edition
• Microsoft Windows XP Professional x64 Edition SP2
• Microsoft Windows XP Service Pack 3
• Microsoft Windows XP Sp1 X64
• Microsoft Windows XP Tablet PC Edition
• Microsoft Windows XP Tablet PC Edition SP1
• Microsoft Windows XP Tablet PC Edition SP2
• Microsoft Windows XP Tablet PC Edition SP3

Recommendations

Run all software as a nonprivileged user with minimal access rights.
To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of suspicious or anomalous activity. This may help detect malicious actions that an attacker may take after successfully exploiting vulnerabilities in applications. Review all applicable logs regularly.

Do not accept or execute files from untrusted or unknown sources.
To reduce the likelihood of successful exploits, never handle files that originate from unfamiliar or untrusted sources.

Do not follow links provided by unknown or untrusted sources.
Web users should be cautious about following links to sites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.

Implement multiple redundant layers of security.
Since this issue may be leveraged to execute code, we recommend memory-protection schemes, such as nonexecutable stack/heap configurations and randomly mapped memory segments. This tactic may complicate exploits of memory-corruption vulnerabilities.

Vendor updates are available. Please see the references for details.