Microsoft Office Outlook for Mac contains a vulnerability that could allow an unauthenticated, remote attacker to access sensitive information on a targeted system. Updates are available.
Microsoft Office Outlook for Mac contains a vulnerability that could allow an unauthenticated, remote attacker to access sensitive information.
The vulnerability is due to insufficient validation and sanitization of user-supplied input by the affected software. An unauthenticated, remote attacker could could exploit this vulnerability by persuading a user to view an e-mail containing malicious HTML5 content. A successful exploit could allow the attacker to access sensitive information.
Microsoft has confirmed the vulnerability in a security bulletin and released software updates.
Microsoft Office for Mac versions 2008 and 2011 are vulnerable.
To exploit the vulnerability, the attacker may provide an e-mail containing malicious content and use misleading language or instructions to persuade the user to open the provided e-mail message.
Microsoft has corrected the vulnerability by implementing user interaction before downloading remote content via HTML5 tags.
Microsoft has released a security bulletin at the following link: MS13-026
An unauthenticated, remote attacker could could exploit this vulnerability to access sensitive information on a targeted system.
The vulnerability is due to insufficient validation and sanitization of HTML5 content tags by the affected software when handling user-supplied input.
An unauthenticated, remote attacker could could exploit this vulnerability by sending an email with crafted HTML5 content tags to a user and persuading the user to view the email with in a browser that implements Webkit. When the malicious HTML5 content is processed by the Webkit component, the attacker could confirm the validity of the targeted email account and when the message is opened. A successful exploit could allow the attacker to access sensitive information on a targeted system.
Administrators are advised to apply the appropriate updates.
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.
Administrators are advised to monitor affected 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 Microsoft Update service. Microsoft Windows Server Update Services (WSUS), Systems Management Server, and System Center Configuration Manager can assist administrators in deploying software updates.
The security vulnerability applies to the following combinations of products.
Office for Mac
2008 Base | 2011 Base
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.