Microsoft Visio Viewer contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. Updates are available.
Microsoft Visio Viewer contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system.
The vulnerability is due to improper processing of crafted .vsd files in Microsoft Visio Viewer. An unauthenticated, remote attacker could exploit this vulnerability by attempting to convince a user to open a malicious document. If successful, this action could allow the attacker to execute arbitrary code on the system.
Microsoft has confirmed the vulnerability in a security bulletin and released software updates.
The following Microsoft applications are affected:
Microsoft Visio Viewer 2010 (32-bit editions) SP1 and prior
Microsoft Visio Viewer 2010 (64-bit editions) SP1 and prior
To exploit the vulnerability, the attacker may provide a file or a link to a malicious website and use misleading language or instructions to persuade the user to open the file or follow the provided link.
Microsoft has corrected this vulnerability by modifying the way Visio Viewer handles objects in memory.
The Cisco Applied Intelligence team has created an Applied Mitigation Bulletin to address vulnerabilities that Microsoft disclosed in the May 2012 security bulletin release. This Cisco bulletin, which assists administrators in identifying or mitigating these vulnerabilities using Cisco devices, is available at the following link: Cisco Applied Mitigation Bulletin: Microsoft Security Bulletin Release for May 2012
Microsoft has released a security bulletin at the following link: MS12-031
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code on the system with the privileges of the user. If the user holds elevated privileges, the attacker could execute code that results in a complete system compromise.
The vulnerability is due to improper processing of .vsd format files in Microsoft Visio Viewer.
An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted .vsd document to a user and attempting to convince the user to open the document. When processed by Visio Viewer, the malicious document may trigger memory corruption that the attacker could use to execute arbitrary code with the privileges of the user.
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 may consider configuring Internet Explorer to prompt users before running Active Scripting or ActiveX controls by setting the Internet and Local Intranet security zone settings to High. Alternately, administrators could disable Active Scripting and ActiveX controls in these security zones.
Administrators may consider using the Microsoft Baseline Security Analyzer (MBSA) scan tool to identify common security misconfigurations and missing security updates on system endpoints.
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
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