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Microsoft gears up for 23 flaws in October 2011 Patch Tuesday

Microsoft’s eight security bulletins address flaws in Internet Explorer, Windows, Forefront UAG and the .NET Framework. Two bulletins are rated “critical.”

Microsoft is gearing up to issue eight security bulletins that address 23 vulnerabilities next week for its October 2011 Patch Tuesday.

The software giant issued its Advance Notification today in preparation for its update slated for Tuesday, Oct. 11 at 1 p.m. ET. In a blog post, Pete Voss, Microsoft’s senior response communications manager, said the October 2011 Patch Tuesday updates will affect Internet Explorer, .NET Framework, Silverlight, Microsoft Windows, Microsoft Forefront UAG and Microsoft Host Integration Server.

Two of the eight updates are rated “critical,” while the remaining six are “important.”

Six of the bulletins may allow remote code execution if left unpatched. The remaining two bulletins address vulnerabilities that enable an attacker to gain additional privileges on a system or perform a denial-of-service attack.  Half of the updates require a system restart; the other half may require a restart.

Last month, Microsoft tackled five security bulletins that addressed 15 vulnerabilities for its September 2011 Patch Tuesday. All of the software giant’s updates were rated “important” and affected Microsoft Office 2010, Microsoft Excel, Microsoft Office Groove 2007 and SharePoint Workspace 2010.

In addition to its standard patches, Microsoft also issued an updated security advisory last month, adding six more DigiNotar root certificates to its Windows Untrusted Certificate Store after the Netherlands-based certificate authority announced its CA systems were breached by an attacker.

~Hillary O’Rourke, Contributor

Dig Deeper on Microsoft Patch Tuesday and patch management

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