Microsoft patches five holes, nukes six certificates

Powered by SC Magazine
 

Light updates hard on DigiNotar.

Microsoft released five bulletins rated as "important" yesterday – its lightest Patch Tuesday of the year.

Pete Voss, from Microsoft's Trustworthy Computing, said because nothing was rated as "critical", none of the patches were given a level one deployment priority.

However, Tyler Reguly, technical manager of security research and development at nCircle, said priority should be given to the Excel patch because Microsoft accidentally released the patches last Friday.

Qualys technology head Wolfgang Kandek said top priority should be given to MS11-072, which fixed an arbitrary code execution vulnerability in all versions of Excel.

“To exploit this issue, attackers could create malicious Excel files, which when opened on vulnerable hosts can take control of the system," he said.

"Priority should also be given to MS11-073, which fixes a code execution vulnerability in Microsoft Office versions 2003, 2007 and 2010, including Microsoft Word. Attackers could use a malicious word file (CVE-2011-1982) to execute code on victim machines.”

Vmware research and development head Jason Miller said vulnerability MS11-073 addressed an issue with Microsoft Office that would be difficult to exploit, and offered two attack scenarios.

"Scenario one: An attacker entices a user to open an Office file located in a directory with a malicious DLL (this scenario would most likely have an attacker already on a corporate network in order to plant the malicious DLL)."

“Scenario two: An attacker sends a malicious Office document and entices the user to save the file, and subsequently open the file in a directory that contains a malicious DLL. Both of these scenarios can be prevented if the Microsoft Office File Validation Add-in is installed. This feature was originally introduced in Microsoft Office 2010. Microsoft has since provided this defence-in-depth measure through an update.”

Kandek also highlighted bulletin MS11-070, which patches a DLL preloading issue that affects the deskpan.dll component in all versions of Windows.

“Only Microsoft server operating systems are affected by this vulnerability (Windows 2003, Windows 2008, Windows 2008 R2). In order for an attacker to carry out an exploit, the attacker must have access and login credentials to the machine. Once on the machine, the attacker could send a malicious WINS request to the local loopback network address of the machine. This could result in elevation of privilege,” said Miller.

Microsoft also banned six additional DigiNotar root certificates, cross-signed by Entrust and GTE.

nCircle security director Andrew Storms said Microsoft "anything and everything associated with DigiNotar is getting purged”.

Elsewhere, Skype has issued support for Windows 8, while Adobe released critical vulnerability patches for its Acrobat and Reader products.

This article originally appeared at scmagazineuk.com

Copyright © SC Magazine, US edition


Microsoft patches five holes, nukes six certificates
 
 
 
Top Stories
Myer CIO named retailer's new chief executive
Richard Umbers to lead data-driven retail strategy.
 
Empty terminals and mountains of data
Qantas CIO Luc Hennekens says no-one is safe from digital disruption.
 
BoQ takes $10m hit on Salesforce CRM
Regulatory hurdles end cloud pilot.
 
 
Sign up to receive iTnews email bulletins
   FOLLOW US...
Latest articles on BIT Latest Articles from BIT
Microsoft is offering Azure for Disaster Recovery to Australian SMBs
Feb 10, 2015
If you haven't talked to your IT provider about disaster recovery, it might be worth discussing ...
The 2015 Xero Roadshow is on: here are the locations and dates
Feb 6, 2015
The 2015 Xero Roadshow kicked off this week - see where you can attend at locations around ...
Microsoft Outlook is now on iPhone and iPad: why could this be useful?
Jan 30, 2015
Microsoft today released Office for Android and Outlook for iOS - complementing the other Office ...
Franchisees, here's something you should know about
Jan 23, 2015
You need to know the Code if you are a franchisee or franchisor as the penalties are significant.
Xero users rejoice! Quoting has finally arrived
Jan 23, 2015
It has taken years, but Xero has at last added integrated quoting to its online accounting software.
Latest Comments
Polls
Who do you trust most to protect your private data?







   |   View results
Your bank
  35%
 
Your insurance company
  5%
 
A technology company (Google, Facebook et al)
  9%
 
Your telco, ISP or utility
  8%
 
A retailer (Coles, Woolworths et al)
  4%
 
A Federal Government agency (ATO, Centrelink etc)
  18%
 
An Australian law enforcement agency (AFP, ASIO et al)
  15%
 
A State Government agency (Health dept, etc)
  7%
TOTAL VOTES: 4120

Vote
Do you support the abolition of the Office of the Information Commissioner?

   |   View results
I support shutting down the OAIC.
  27%
 
I DON'T support shutting the OAIC.
  73%
TOTAL VOTES: 1403

Vote