November 2013 Microsoft Patch Tuesday - SANS Internet Storm Center

Overview of the November 2013 Microsoft patches and their status.

#	Affected	Contra Indications - KB	Known Exploits	Microsoft rating(**)	ISC rating(*)
#	Affected	Contra Indications - KB	Known Exploits	Microsoft rating(**)	clients	servers
MS13-088	Cumulative Security Update for Internet Explorer (ReplacesMS13-080 )
MS13-088	Internet Explorer CVE-2013-3891 CVE-2013-3908 CVE-2013-3909 CVE-2013-3910 CVE-2013-3911 CVE-2013-3912 CVE-2013-3914 CVE-2013-3915 CVE-2013-3916 CVE-2013-3917	KB 2888505	No.	Severity:Critical Exploitability: 1,2,3	Critical	Important
MS13-089	Remote Code Execution Vulnerability in Windows Graphics Device Interface (ReplacesMS08-071 )
MS13-089	GDI+ CVE-2013-3940	KB 2876331	No.	Severity:Critical Exploitability: 1	Critical	Important
MS13-090	Remote Code Execution Vulnerability in InformationCardSigninHelp ActiveX Class (ReplacesMS11-090 )
MS13-090	ActiveX (icardie.dll) CVE-2013-3918	KB 2900986	Yes.	Severity:Critical Exploitability: 1	PATCH NOW!	Important
MS13-091	Remote Code Execution Vulnerability in Microsoft Office (ReplacesMS09-073 )
MS13-091	Microsoft Office (Word) CVE-2013-0082 CVE-2013-1324 CVE-2013-1325	KB 2885093	No.	Severity:Important Exploitability: 1,3	Critical	Important
MS13-092	Elevation of Privileges Vulnerability in HyperV
MS13-092	HyperV Guests (DoS for Host) CVE-2013-3898	KB 2893986	No.	Severity:Important Exploitability: 1	Important	Important
MS13-093	Information Disclosure Vulnerability in Ancillary Function Driver (ReplacesMS12-009 )
MS13-093	Ancillary Function Driver CVE-2013-3887	KB 2875783	No.	Severity:Important Exploitability: 3	Important	Important
MS13-094	Information Disclosure Vulnerability in Outlook (ReplacesMS13-068 )
MS13-094	Outlook CVE-2013-3905	KB 2894514	No.	Severity:Important Exploitability: 3	Important	Less Important
MS13-095	Denial of Service Vulnerability in Digital Signatures (ReplacesAdvisory 2661254 )
MS13-095	Digital Signatures CVE-2013-3869	KB 2868626	No.	Severity:Important Exploitability: 3	N/A	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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Johannes B. Ullrich, Ph.D.
SANS Technology Institute
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I will be teaching next: Application Security: Securing Web Apps, APIs, and Microservices - SANSFIRE 2022

Johannes

4504 Posts
ISC Handler

Nov 12th 2013

I have a suggestion, it will be very helpful if you could add more columns for clients and servers, whereby, you have one column for each client e.g. XP, Win7, Win8 and similarly for servers e.g. Win Server 2003, Win Server 2008 and Win Server 2012, then for each patch have the ratings listed that apply to each client or server.

I hope I am making sense :) because at the moment if it says Critical for Clients, then sometimes the same rating does not apply to all clients. Meaning it could be Critical for Win XP and Win 7 but not Win8. Hence having different columns will be very helpful.

Just a suggestion :)

Thank you

Zain Khan

4 Posts

The Microsoft advisory for MS13-095 lists Windows 7 and Windows 8/8.1 as being vulnerable and it is in the Windows Update list on my Windows 7 Pro PC so I believe that the table should say that MS13-095 is "Important" for clients (not "N/A").

patermann

35 Posts

There appears to be another security update that is not mentioned in Microsoft's list of updates for November (and hence your table): Microsoft Security Advisory (2862152) - Vulnerability in DirectAccess Could Allow Security Feature Bypass. Web pages are:
http://technet.microsoft.com/en-us/security/advisory/2862152
http://support.microsoft.com/kb/2862152

patermann

35 Posts