Dec 112012
 

Overview of the December 2012 Microsoft patches and their status.






#

Affected

Contra Indications - KB

Known Exploits

Microsoft rating(**)

ISC rating(*)



clients

servers






MS12-077

Internet Explorer Cumulative Patch

(Replaces MS12-063 MS12-071 )



Internet Explorer 9/10



CVE-2012-2545
CVE-2012-4781

CVE-2012-4782

CVE-2012-4787

KB 2761465

No.

Severity:Critical

Exploitability: 1

Critical

Critical




MS12-078

Windows Kernel Mode Drivers Remote Execution

(Replaces MS12-032 MS12-075 )



Kernel mode drivers

CVE-2012-2556

CVE-2012-4786

KB 2783534

No.

Severity:Critical

Exploitability: 1

Critical

Important




MS12-079

Microsoft Word RTF Data Remote Code Execution

(Replaces MS12-064 )



Word

CVE-2012-2539

KB 2780642

No.

Severity:Critical

Exploitability: 1

Critical

N/A




MS12-080

Windows Exchange Server Remote Code Execution

(Replaces MS12-058 )



Exchange Server



CVE-2012-3214


CVE-2012-3217


CVE-2012-4791


KB 2784126

Yes.

Severity:Critical

Exploitability: 1

N/A

Critical




MS12-081

Windows File Handling Remote Code Execution

(Replaces MS07-035 MS11-063 )



Windows

CVE-2012-4774

KB 2758857

No.

Severity:Critical

Exploitability: 1

Critical

Critical




MS12-082

DirectPlay Remote Code Execution



DirectPlay

CVE-2012-1537

KB 2770660

No.

Severity:Important

Exploitability: 1

Critical

Important




MS12-083

IP-HTTPS Security Feature Bypass



Direct Access



CVE-2012-2549





KB 2765809

No.

Severity:Important

Exploitability: 1

Important

Important





We will update issues on this page for about a week or so as they evolve.

We appreciate updates

US based customers can call Microsoft for free patch related support on 1-866-PCSAFETY


(*): ISC rating


We use 4 levels:


PATCH NOW: Typically used where we see immediate danger of exploitation. Typical environments will want to deploy these patches ASAP. Workarounds are typically not accepted by users or are not possible. This rating is often used when typical deployments make it vulnerable and exploits are being used or easy to obtain or make.

Critical: Anything that needs little to become interesting for the dark side. Best approach is to test and deploy ASAP. Workarounds can give more time to test.

Important: Things where more testing and other measures can help.

Less Urgent: Typically we expect the impact if left unpatched to be not that big a deal in the short term. Do not forget them however.



The difference between the client and server rating is based on how you use the affected machine. We take into account the typical client and server deployment in the usage of the machine and the common measures people typically have in place already. Measures we presume are simple best practices for servers such as not using outlook, MSIE, word etc. to do traditional office or leisure work.

The rating is not a risk analysis as such. It is a rating of importance of the vulnerability and the perceived or even predicted threat for affected systems. The rating does not account for the number of affected systems there are. It is for an affected system in a typical worst-case role.

Only the organization itself is in a position to do a full risk analysis involving the presence (or lack of) affected systems, the actually implemented measures, the impact on their operation and the value of the assets involved.

All patches released by a vendor are important enough to have a close look if you use the affected systems. There is little incentive for vendors to publicize patches that do not have some form of risk to them.


(**): The exploitability rating we show is the worst of them all due to the too large number of ratings Microsoft assigns to some of the patches.


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--

John Bambenek

bambenek /at/ gmail.com

Bambenek Consulting
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