Security Research & Defense
Information from Microsoft about vulnerabilities, mitigations and workarounds, active attacks, security research, tools and guidance
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Attack Surface Reduction
Internet Explorer (IE)
safe for initialization
safe for scripting
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Security Research & Defense
Help and Support Center vulnerability full-disclosure posting
Yesterday evening, one of Google’s security researchers publicly released vulnerability details and a working exploit for an unpatched vulnerability in Windows XP and Windows Server 2003. This afternoon, we’ve released security advisory 2219475 with official guidance. We’d like to use...
10 Jun 2010
MS08-055: Microsoft security response process, behind the scenes
One of our blogging goals is to give you a peek “behind the scenes” into our security response process. We thought you might be interested in the story behind MS08-055 , this month's OneNote bulletin. In March, a security researcher sent in a report of an information disclosure vulnerability that...
9 Sep 2008
MS09-019 (CVE-2009-1140): Benefits of IE Protected Mode, additional Network Protocol Lockdown workaround
Benefits of IE Protected Mode One of the vulnerabilities addressed in MS09-019 , CVE-2009-1140, involves navigating to a local file via a UNC path, ex: \\127.0.0.1\c$. This roundabout way of navigating to a file is necessary to execute local content such that it runs in the Internet Explorer Internet...
9 Jun 2009
MS08-015: Protocol Handler and its Default Security Zone
MS08-015, CVE-2008-0110, addresses a vulnerability in Microsoft Outlook’s implementation of “mailto” URI handling. The attack can be launched via IE or other applications which invoke the “mailto” protocol. Applications can register pluggable protocol handlers to handle a custom Uniform Resource Locator...
11 Mar 2008
MS08-075: Reducing attack surface by turning off protocol handlers
Today Microsoft released a security update, MS08-075, that fixes a vulnerability in Windows Explorer in Vista and Server 2008 that was exposed through the search-ms protocol handler. This is a remote unauthenticated vulnerability that requires user interaction, so we wanted to give you a bit more information...
9 Dec 2008
More information about the MHTML Script Injection vulnerability
Today we released Security Advisory 2501696 to alert customers to a publicly disclosed vulnerability in the MHTML protocol handler. This vulnerability could allow attackers to construct malicious links pointing to HTML documents that, when clicked, would render the targeted document and reflected script...
28 Jan 2011
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