Researcher sees Patch Tuesday 'nightmare'

Usual rules may not apply, given volume and complexity of Microsoft security update

Corporate security and network administrators face a "nightmare" task just trying to figure out what to patch and what to let slide after Microsoft issued its biggest-ever batch of updates today, researchers argued.

"This is the biggest number of bulletins," said Jason Miller, the security and data team manager for patch management vendor Shavlik Technologies. "It's also the biggest number of individual patches."

The bottom line, said Miller: "This is an administrative nightmare, just trying to get a good grasp of what's out there."

Wolfgang Kandek, the chief technology officer at Qualys, agreed. "This is a huge release," said Kandek. "No one will be untouched."

Today's security updates from Microsoft were unprecedented, with 13 separate bulletins that quashed 34 vulnerabilities. Both were records for the company since it began delivering monthly updates six years ago.

Miller and Kandek noted that several of the security bulletins were extraordinarily complex, which will only complicate the chore of deciding what to patch immediately, and what can wait.

"Just focus on MS09-062 ," said Miller, speaking of the bulletin that patched eight different bugs in the GDI+ (Graphics Device Interface) component within Windows. "The sheer number of products listed as affected is immense."

Microsoft acknowledged that the GDI+ patches affected Windows XP, Vista, Server 2003, Server 2008, Internet Explorer (IE), .NET Framework, all supported editions of Office, SQL Server, Visual Studio and Forefront Client Security.

"GDI touches everything," said Kandek. "And it's a complicated component."

"We're talking about an older technology that's been around for awhile," added Miller, referring to the familiarity hackers have with GDI, and thus the increased likelihood that they will be able to craft exploits for the bugs Microsoft revealed today. "The vulnerabilities affect a lot of different file formats, including Office. If you're running anything made by Microsoft, you're probably going to be affected by this one."

Miller saw two choices for Microsoft's customers: Either postpone patching some of the vulnerabilities or separate the updates into batches that can be rolled out in stages. "This month, they will either have to throw out their normal procedures, or extend their patching cycle by taking them in bunches," said Miller.

Andrew Storms, director of security operations at nCircle Network Security, warned administrators not to do the former. "Despite the number of bulletins and the workload, it's going to be important that companies use the same diligence as always," said Storms. "That's what is going to win the game for everyone."

Given the number of updates that need to be applied, it was no surprise that Miller, Kandek and Storms each had their own recommendations on what patches to roll out pronto.

"The IE update is the most important," said Kandek, talking about MS09-054 , which fixes four critical flaws in the popular browser. "That's what people use. And applying the patch immediately should not break anything."

He also put the GDI+ update at the top of his list, as did Miller. "IE and GDI should be patched first, just because of the huge target base," reasoned Miller. "IE is the richest target.... All hackers need is a malicious site to take advantage of the vulnerabilities."

Storms, on the other hand, suggested people deploy MS09-050 and MS09-053 as soon as possible: Those updates fix flaws Microsoft revealed more than a month ago in SMB (Server Message Block) 2, a Microsoft-made network file- and print-sharing protocol, and in the FTP server included with older editions of the Internet Information Services (IIS) Web server.

"I would put the two items in the public domain at the top of the list," said Storms. "And then MS09-051 and the IE updates, the latter because those kind of client-side bugs get a lot of attention from attackers."

MS09-051 patches a pair of vulnerabilities in Windows Media's codecs that could easily be exploited, said Storms, by hackers via "drive-by" attacks launched from malicious or hijacked legitimate Web sites.

"It's going to be tough for administrators to do their research this month," said Miller. "I can see some people just doing the ones as they see fit."

This month's 13 security updates can be downloaded and installed via the Microsoft Update and Windows Update services, as well as through Windows Server Update Services.

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Gregg Keizer

Computerworld (US)
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