Microsoft delivers monster patch batch

Clock ticking as hackers race to exploit bugs in Windows, IE and Office, says researcher

By , Computerworld |  Security, Internet Explorer, Microsoft

Microsoft today issued a record 14 security updates to patch a record-tying 34 vulnerabilities in Windows, Internet Explorer (IE), Office and Silverlight.

"Don't get mired in the details," recommended Andrew Storms, director of security operations for nCircle Security, as he acknowledged that the sheer number of updates and patches could easily overwhelm users.

"There are so many patches here that you could go in all kinds of different directions," agreed Jason Miller, data and security team manager for patch-management vendor Shavlik Technologies. "It could come down to what people think are the biggest attack vectors."

No one was questioning the size of today's Patch Tuesday. The August update was the biggest ever by number of security bulletins, and equaled the single-month record for individual patches, which was first set last October and repeated in June 2010. This month's collection also tied the October 2009 record for the most critical bulletins.

Of the 34 fixes flaws, Microsoft rated 14 as "critical," the highest threat ranking in the firm's four-step scoring system. Seventeen were pegged as "important," and three were labeled as "moderate."

With Microsoft throwing nearly three-dozen patches at customers, it's not a surprise that researchers disagreed on which updates people should apply first.

"I'd have to put MS10-056 at the top," said Storms, referring to a three-patch update for Office that included a pair of critical vulnerabilities in Office 2007. "All one needs to do is have the preview pane open [in Outlook 2007] and just look at a malformed RTF file," Storms added.

Unlike most exploits delivered via e-mail, these wouldn't require the recipient to open an attachment, a practice people know is risky. But as Storms pointed out, most users preview e-mail messages without a second thought. "I'd put this in the same category as a drive-by," Storms said. "I can imagine someone sticking an RTF file in a spam engine and just going crazy."

While other researchers agreed with Storms that MS10-056 was dangerous, they nominated different updates -- or combinations of updates -- for their top pick of the month.

"I'm concerned about the two media-related updates, MS10-052 and MS10-055 ," said Miller.

Those updates, both judged critical, address a pair of bugs in two codecs - software that compresses and decompresses video data -- included with Windows.


Originally published on Computerworld |  Click here to read the original story.
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