Microsoft to Patch IE With Emergency Fix

From PC World: Microsoft announced it will issue an emergency security update for Internet Explorer (IE) today to patch a zero-day vulnerability that has been used to launch drive-by attacks for at least several weeks.

Tuesday's update will be the second out-of-band update -- Microsoft's term for one outside its normal once-each-month Patch Tuesday -- in the last three months. Microsoft last shipped a rush IE update to customers in late January, to fix eight flaws, including one that had been used to attack several companies' networks, including Google's and Adobe's.

"The bulletin is being released to address attacks against customers of Internet Explorer 6 and Internet Explorer 7," said Microsoft in an updated advisory.

As it did in January, Tuesday's out-of-band update will patch more than just the zero-day. It will, in fact, plug critical holes in every edition of IE, including the newest, IE8. "The out-of-band security bulletin is a cumulative security update for Internet Explorer and will also contain fixes for privately reported vulnerabilities rated Critical on all versions of Internet Explorer that are not related to this attack," said Microsoft today.

Microsoft first warned users of the vulnerability in IE6 and IE7 on March 9, saying at the time that the bug didn't affect the browser's oldest and newest editions, IE 5.01 and IE8, respectively. At the time, Microsoft called the attacks "targeted," a term it uses to describe small-scale exploitations.

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