Additional technical information that describes the Microsoft Office Drawing Records processing arbitrary code execution vulnerability is available.
Microsoft Office contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code.
The vulnerability exists due to errors in processing drawing records within Microsoft Office documents. An unauthenticated, remote attacker could exploit the vulnerability by convincing the user to view a malicious document. If successful, the attacker could execute arbitrary code with the privileges of a targeted user.
Microsoft has confirmed the vulnerability in a security bulletin and released software updates.
The following Microsoft products are affected:
Office XP SP3 and prior
Office 2003 SP3 and prior
Office 2007 SP2 and prior
Office 2010 (32-bit editions)
Office 2010 (64-bit editions)
Office 2004 for Mac
Office 2008 for Mac
Open XML File Format Converter for Mac
An attacker cannot directly exploit this vulnerability and instead relies upon user interaction to accomplish an exploit. The attacker must convince a user to open a malicious document, likely provided as an attachment to an e-mail message delivered to the user. The attacker may also provide links within e-mail or instant messages that direct users to files located on remote file shares or websites.
A successful exploit could allow the attacker to execute arbitrary code with the privileges of the user. Systems most at risk are those where users run applications with elevated privileges. On such a system, an exploit could allow the attacker to take complete control over the system.
Microsoft has released a security bulletin at the following link: MS10-087
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code with the privileges of the targeted user. If that user holds elevated privileges, the attacker could completely compromise the targeted system.
The vulnerability is due to insufficient sanitization of user supplied input in the affected software. The application fails to properly sanitize the Office Art Drawing msofbtSp records with unspecified flags.
An unauthenticated, remote attacker could exploit the vulnerability by convincing a user to view an Office document that contains malicious msofbtSp records. When viewed, the file could cause a memory corruption, which the attacker could leverage to execute arbitrary code with the privileges of the user.
Administrators are advised to apply the appropriate software updates.
Users are advised to read e-mail in plain text.
Users are advised not to open e-mail messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in e-mail messages are safe, they are advised not to open them.
Users may consider applying the Microsoft Office Isolated Conversion Environment (MOICE) to safely open Word, Excel, and PowerPoint files from suspicious or unrecognized sources on systems that are running Microsoft Office 2003 or Office 2007.
Administrators are advised to monitor critical systems.
Microsoft customers can obtain updates directly by using the links in the security bulletin. These updates are also distributed by Windows automatic update features and available on the Windows Update website. Microsoft Windows Server Update Services (WSUS), Systems Management Server, and System Center Configuration Manager can assist administrators in deploying software updates.
Cisco Systems Cisco Intrusion Prevention System (IPS) 6.0
Version 1, November 9, 2010, 2:29 PM: Microsoft Office contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the system with the privileges of a targeted user. Updates are available.
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