Preview: Microsoft's Patch Tuesday Load for April 2013

Microsoft plans nine security bulletins containing fixes for a variety of Windows, Office and Internet Explorer flaws.

Microsoft just released its advance notification for next week's security updates. It looks like we can expect nine bulletins -- two rated "critical," the rest rated "important -- to deal with flaws in Windows, Office, Internet Explorer as well as server and security software.

One comment I've gotten thus far:

“While only two of the announced patches are actually critical, as a security professional, I find the sheer volume of patches this month to be noteworthy. Large numbers of updates lead to more administration and ultimately delays. This can allow critical vulnerabilities to be exploited while less significant concerns simply cloud the security picture. In terms of the vulnerabilities themselves, I would focus first on Bulletin number one, which is applicable to all Windows desktops, making it very much the bulls-eye for would be attackers. Bulletin 8 may also represent one of the first reported vulnerabilities for Microsoft Office Web Apps 2010,  which would be significant in and of itself.” – Alex Horan, senior product manager, CORE Security

The breakdown:

Bulletin ID Maximum Severity Rating and Vulnerability Impact Restart Requirement Affected Software
Bulletin 1

Critical 

Remote Code Execution
Requires restart

Microsoft Windows, 

Internet Explorer
Bulletin 2

Critical 

Remote Code Execution
May require restart Microsoft Windows
Bulletin 3

Important 

Information Disclosure
May require restart

Microsoft Office, 

Microsoft Server Software
Bulletin 4

Important 

Elevation of Privilege
Requires restart Microsoft Windows
Bulletin 5

Important 

Denial of Service
Requires restart Microsoft Windows
Bulletin 6

Important 

Elevation of Privilege
Requires restart Microsoft Windows
Bulletin 7

Important 

Elevation of Privilege
Requires restart Microsoft Security Software
Bulletin 8

Important 

Elevation of Privilege
May require restart

Microsoft Office, 

Microsoft Server Software
Bulletin 9

Important 

Elevation of Privilege
Requires restart Microsoft Windows
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