Workarounds

MS08-043 : How to prevent this information disclosure vulnerability

In this month’s update for Excel we addressed an interesting CVE (CVE-2008-3003) – the first vulnerability to affect the new Open XML file format (but it doesn’t result in code execution). This is an information disclosure vulnerability that can arise when a user makes a data connection from Excel to a remote data source and …

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MS08-041 : The Microsoft Access Snapshot Viewer ActiveX control

MS08-041 fixes a vulnerability in the Microsoft Access Snapshot Viewer ActiveX control. It’s an interesting vulnerability so we wanted to go into more detail about platforms at reduced risk and also more about the servicing strategy for this vulnerability. Windows Vista at reduced risk? We first heard about this vulnerability from customers sending in reports …

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MS08-033: So what breaks when you ACL quartz.dll?

In some of the multimedia MSRC bulletins that have been released there is a workaround listed about changing ACL’s on Quartz.dll. So, what exactly breaks when we ACL Quartz.dll? Quartz.dll is a core component of the DirectShow framework. Originally a component of DirectX, DirectShow eventually took on a life of its own as multimedia recording …

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MS08-026: How to prevent Word from loading RTF files

This month we released an update for Microsoft Word that fixed issues relating to loading RTF files (CVE-2008-1091) and HTML files (CVE-2008-1434).  Office applications like Microsoft Word can load a large variety of different file formats, and some people may want to reduce their attack surface by disabling the formats they don’t typically use.  As …

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