Microsoft Patch Tuesday - April 2015 - SANS Internet Storm Center

Overview of the April 2015 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
MS15-032	Cumulative Security Update for Internet Explorer (ReplacesMS15-018 )
MS15-032	CVE-2015-1652, CVE-2015-1657, CVE-2015-1659, CVE-2015-1660, CVE-2015-1661, CVE-2015-1662, CVE-2015-1665, CVE-2015-1666, CVE-2015-1667, CVE-2015-1668	KB 3038314	No	Severity:Critical Exploitability:	Critical	Important
MS15-033	Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (ReplacesMS14-081 MS15-022 )
MS15-033	CVE-2015-1639 CVE-2015-1641 CVE-2015-1649 CVE-2015-1650 CVE-2015-1651	KB 3048019	vuln. public.	Severity:Critical Exploitability:	Critical	Important
MS15-034	Vulnerability in HTTP.sys Could Allow Remote Code Execution
MS15-034	CVE-2015-1635	KB 3042553	No	Severity:Critical Exploitability:	Critical	Critical
MS15-035	Vulnerability in Microsoft Graphics Component Could Allow Remote Code Execution
MS15-035	CVE-2015-1645	KB 3046306	No	Severity:Critical Exploitability:	Critical	Critical
MS15-036	Vulnerabilities in Microsoft SharePoint Server Could Allow Elevation of Privilege (ReplacesMS15-022 )
MS15-036	CVE-2015-1640 CVE-2015-1653	KB 3052044	No	Severity:Important Exploitability:	N/A	Important
MS15-037	Vulnerability in Windows Task Scheduler Could Allow Elevation of Privilege
MS15-037	CVE-2015-0098	KB 3046269	No	Severity:Important Exploitability:	Important	Important
MS15-038	Vulnerabilities in Microsoft Windows Could Allow Elevation of Privilege (ReplacesMS15-025 MS15-031 )
MS15-038	CVE-2015-1643 CVE-2015-1644	KB 3049576	No	Severity:Important Exploitability:	Important	Important
MS15-039	Vulnerability in XML Core Services Could Allow Security Feature Bypass (ReplacesMS14-067 )
MS15-039	CVE-2015-1646	KB 3046482	No	Severity:Important Exploitability:	Important	Important
MS15-040	Vulnerability in Active Directory Federation Services Could Allow Information Disclosure
MS15-040	CVE-2015-1638	KB 3045711	No	Severity:Important Exploitability:	Important	Important
MS15-041	Vulnerability in .NET Framework Could Allow Information Disclosure (ReplacesMS14-009 )
MS15-041	CVE-2015-1648	KB 3048010	No	Severity:Important Exploitability:	Important	Important
MS15-042	Vulnerability in Windows Hyper-V Could Allow Denial of Service
MS15-042	CVE-2015-1647	KB 3047234	No	Severity:Important Exploitability:	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 Urt 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 threatatches.

--
Alex Stanford - GIAC GWEB & GSEC,
Research Operations Manager,
SANS Internet Storm Center
/in/alexstanford

Alex Stanford

136 Posts

Apr 14th 2015

I find it interesting that in MS15-042 you can run a program inside a VM that has impact on the hypervisor outside of that VM. Oops. /me steers clear of hyper-v.

Anonymous

Our WSUS server will not download KB2553428 because it is tagged with various supported languages, but English is missing from the list. From the public MS update servers, the update comes down to a client just fine. It looks like MS needs to fix this language supported field so that company WSUS servers will actually get the update. Companies remain vulnerable to this issue and most likely don't know it.

Is anyone else seeing this issue?

mobartz

4 Posts

damn, MS15-034 for IIS sounds very serious

http://www.exploit-db.com/exploits/36773/

TuggDougins

37 Posts

Our WSUS server will not download KB2553428 because it is tagged with various supported languages, but English is missing from the list. From the public MS update servers, the update comes down to a client just fine. It looks like MS needs to fix this language supported field so that company WSUS servers will actually get the update. Companies remain vulnerable to this issue and most likely don't know it.

Is anyone else seeing this issue?

mobartz

4 Posts

Would it be a good idea to upgrade MS15-034 to "PATCH NOW"?
It seems exploits are being prepared.
What are you seeing?

mobartz
4 Posts

There is now a thread on the technet forums about this, and some others are starting to notice that they are NOT deploying this patch to their clients. You may not realize that KB2553428 is not being installed on your systems!

https://social.technet.microsoft.com/Forums/windowsserver/en-US/da85df07-18d5-42bd-ae7e-9aaad9f72fcb/kb2553428-not-showing-with-english-support-
from-wsus-server?forum=winserverwsus

mobartz

4 Posts

Quoting Anonymous:I find it interesting that in MS15-042 you can run a program inside a VM that has impact on the hypervisor outside of that VM. Oops. /me steers clear of hyper-v.

Maybe I'm missing something, but it doesn't seem to impact the actual hypervisor, but sounds from the description like it makes the management tool puke. E.g. something along the lines of "OhNoThisVMisDoingSomethingWeirdOhNoThisVMisDoingSomethingWeird..." ad infinitum.

Jaybone

27 Posts

We saw that KB2553428 had its language field changed to "all" recently, and now our WSUS server is allowing this to be deployed.

mobartz

4 Posts