Security Corner

Sep 8 2009   11:37PM GMT

Patch Tuesday – Microsoft Fixes Eight Security Flaws

Ken Harthun Ken Harthun Profile: Ken Harthun

All of them are critical, but not a single one of them affects Windows 7, scheduled for release on October 22.

The most dangerous flaw covered by this month’s batch of patches is a remote code execution vulnerability in the way that the JScript scripting engine decodes script in Web pages (MS09-045). A remote attacker can exploit this vulnerability by convincing a user to visit a specially crafted Web page and this could result in execution of arbitrary code on the affected system. All versions of Windows—except Windows 7—are vulnerable. Here is the list of bulletins taken from the Microsoft Security Bulletin Summary for September 2009:

MS09-045 Vulnerability in JScript Scripting Engine Could Allow Remote Code Execution (971961)
MS09-049 Vulnerability in Wireless LAN AutoConfig Service Could Allow Remote Code Execution (970710)
MS09-047 Vulnerabilities in Windows Media Format Could Allow Remote Code Execution (973812)
MS09-048 Vulnerabilities in Windows TCP/IP Could Allow Remote Code Execution (967723)
MS09-046 Vulnerability in DHTML Editing Component ActiveX Control Could Allow Remote Code Execution (956844)

It remains to be seen how Windows 7 will fare once it’s released to retail, but so far, it appears to be more secure the previous versions of Windows. According to Wolfgang Kandek, chief technology officer at software security provider Qualys, "There are a number of additional security measures [in Windows 7] that seem to be working so far in its favor."

We can only hope.

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