Microsoft Security Bulletin MS13-045 - Important
Vulnerability in Windows Essentials Could Allow Information Disclosure (2813707)
Published: | Updated:
This security update resolves a privately reported vulnerability in Windows Essentials. The vulnerability could allow information disclosure if a user opens Windows Writer using a specially crafted URL. An attacker who successfully exploited the vulnerability could override Windows Writer proxy settings and overwrite files accessible to the user on the target system. In a web-based attack scenario, a website could contain a specially crafted link that is used to exploit this vulnerability. An attacker would have to convince users to visit the website and open the specially crafted link.
This security update is rated Important for Windows Writer when installed on all supported editions of Microsoft Windows. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerability by correcting the way Windows Writer handles URL parameters. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.
Recommendation. Microsoft recommends that customers apply the update at the earliest opportunity.
See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.
|Knowledge Base Article||2813707|
The following software have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, see Microsoft Support Lifecycle.
|Operating System||Maximum Security Impact||Aggregate Severity Rating||Updates Replaced|
|Windows Essentials 2011||Information Disclosure||Important||None|
|Windows Essentials 2012|
There is no update available for Windows Essentials 2011. See update FAQ for details.
Microsoft thanks the following for working with us to help protect customers:
- Andrea Micalizzi, working with Beyond Security's SecuriTeam Secure Disclosure team, for reporting the Windows Essentials Improper URI Handling Vulnerability (CVE-2013-0096)
To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please go to the active protections websites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.
How to obtain help and support for this security update
- Help installing updates: Support for Microsoft Update
- Security solutions for IT professionals: TechNet Security Troubleshooting and Support
- Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center
- Local support according to your country: International Support
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- V1.0 (May 14, 2013): Bulletin published.
- V1.1 (May 15, 2013): Corrected link to the download location in the Detection and Deployment Tools and Guidance section. This is an informational change only.