Tuesday, January 12, 2010

Today is Microsoft Patch Tuesday -- time to update

Despite Microsoft claiming this is "Critical" only on Windows 2000, all my systems (XP Home and Pro and Windows 7 Pro) installed this patch.  I recommend you do so also.

MS Patch Tuesday: Another critical font engine vulnerability | Zero Day | ZDNet.com
The first Microsoft patch for 2010 is out, providing cover for a solitary vulnerability in the way Windows handles EOT (Embedded OpenType) fonts.

The update is rated “critical” but Microsoft says there is a low likelihood of exploitation on its newer operating systems.

The vulnerability, which was discovered by Google security engineer Tavis Ormandy, is a remote code execution issue in the way that the Microsoft Windows Embedded OpenType (EOT) Font Engine decompresses specially crafted EOT fonts.

From the MS10-001 advisory:
If a user is logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
Because Microsoft considers this a very difficult vulnerability to exploit on most operating systems, it is rated “critical” only for Windows 2000.

However, it’s important to note that Windows XP, Windows Vista and Windows 7 are all affected by this flaw.
US-CERT Current Activity
Microsoft Releases January Security Bulletin
added January 12, 2010 at 02:07 pm

Microsoft has released an update to address a vulnerability in Microsoft Windows in its Microsoft Security Bulletin Summary for January 2010. This vulnerability may allow an attacker to execute arbitrary code. An attacker may be able to exploit this vulnerability by convincing a user to view content rendered in a specially crafted Embedded OpenType (EOT) font in an application that can render EOT fonts. Common applications that can render EOT fonts include Microsoft Internet Explorer, Microsoft Office Word, and Microsoft Office PowerPoint.

US-CERT encourages users and administrators to review the bulletin and apply any necessary updates to help mitigate the risks.
Microsoft Security Bulletin: January 2010
Overview of the January 2010 Microsoft patch and status.
Microsoft Advices XP Users to Uninstall Flash Player 6
As part of today's bulletin release, Microsoft advices users of Windows XP to uninstall Flash Player 6 which is installed with Windows XP. Affected users should upgrade to the latest version or Flash Player which is available for download from Adobe.

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