Security UPDATE--A Dozen Security Patches and Several Related Exploits--June 21, 2006

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1. In Focus: A Dozen Security Patches and Several Related Exploits

2. Security News and Features

- Recent Security Vulnerabilities

- Microsoft Takes Security to the Forefront

- Will Ethereal Be Devoured by Wireshark?

- SmartLine DeviceLock Minireview

3. Security Toolkit

- Security Matters Blog

- FAQ

- Security Forum Featured Thread

- Instant Poll

- Share Your Security Tips

4. New and Improved

- Virtual Security Gateway

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==== 1. In Focus: A Dozen Security Patches and Several Related Exploits ====

by Mark Joseph Edwards, News Editor, mark at ntsecurity / net

As you hopefully know by now, Microsoft released a dozen security patches last week. Microsoft rated eight of the patches as critical, meaning that the related problems could be exploited without user interaction to possibly spread a worm. The remaining four patches are rated important, meaning that the related problem could be exploited to compromise sensitive information, hinder access to data, or affect availability and integrity of processing resources.

After Microsoft releases security patches, intruders often quickly release exploits that take advantage of the vulnerabilities or researchers sometimes discover that previously known security problems still exist and that the latest batch of patches left problems unfixed. This past week was no different.

Reading the Handler's Diary blog at SANS Internet Storm Center (at the URL below) last week, I learned that the day after Microsoft released its security patches, there were at least six new exploits. Fortunately, two of those exploits, which affect Microsoft Windows Media Player and RRAS, were released by a security vendor to its customers, so those weren't floating around in the wild. Another exploit, which affects TCP/IP networking, was released privately, so it wasn't in the wild either. Yet another exploit, which affects Microsoft Word, was already in the wild before the related patch was released. That leaves at least two new exploits that are in the wild, both of which affect Server Message Block (SMB) and could be used to elevate privileges or hide a running process.

http://isc.sans.org

These last two exploits caught my attention because installing the patch in the related Microsoft Security Bulletin MS06-030: Vulnerability in Server Message Block Could Allow Elevation of Privilege doesn't completely fix the security problems. Even with the patch installed, vulnerability remains, although to an arguably lesser extent.

Ruben Santamarta, who runs the reversemode.com Web site, posted a message to SecurityFocus's BugTraq mailing list (at the URL below) in which he stated in reference to MS06-030, "Microsoft has not fixed the NtClose/ZwClose DeadLock vulnerability.... I think that the Driver Developer community should be informed that using NtClose/ZwClose, the driver will be exposed to a security issue by default."

http://www.securityfocus.com/archive/1/437320/30/0/threaded

Santamarta published a document on his Web site that discusses the problem in considerable technical detail (at the URL below). If I understand correctly, Santamarta has found that a malware writer could use the still existing vulnerability to essentially hide a process. As demonstrated in one of his published exploits, even if you try to terminate the process, it will disappear but not actually stop running. This of course gives the malware writer a great way to avoid malware removal. Santamarta's proof of concept points out that Microsoft needs to fix this problem sooner rather than later.

http://www.reversemode.com/index.php?option=com_content&task=view&id=14&Item

Finally, another exploit you need to be aware of, which isn't related to Microsoft's June release of patches, is a zero-day exploit released last week that affects Microsoft Excel. At the time of this writing, no patch was available from Microsoft to correct the problem. The problem is serious in that it allows the execution of arbitrary code when someone opens an affected Excel document. Security vendors are working to provide detection of this exploit, so hopefully you'll have the protection you need by the time you read this newsletter.

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==== 2. Security News and Features ====

Recent Security Vulnerabilities

If you subscribe to this newsletter, you also receive Security Alerts, which inform you about recently discovered security vulnerabilities. You can also find information about these discoveries at

http://www.windowsitpro.com/departments/departmentid/752/752.html

Microsoft's Takes Security to the Forefront

At TechEd 2006 last week in Boston, Microsoft announced its Forefront brand and the launch of ISA Server 2006. Forefront will include solutions for clients, servers, and the network boundary. Find out what products will be included and when you can expect to see them.

http://www.windowsitpro.com/Article/ArticleID/50588

Will Ethereal Be Devoured by Wireshark?

Ethereal has long been the tool of choice among countless network administrators for robust packet capturing and protocol analysis. Now the hugely popular open source tool has a new name, Wireshark, and a new sponsor to go along with it.

http://www.windowsitpro.com/Article/ArticleID/50544

SmartLine DeviceLock Minireview

SmartLine's DeviceLock lets you manage device security for portable devices by assigning users access levels to network devices and interfaces, such as USB and infrared ports, wireless network adapters, and removable storage devices. Read Trisha Pendley's minireview on our Web site.

http://www.windowsitpro.com/Article/ArticleID/49916

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Security Matters Blog: 100GB in My Pocket!

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I found a super-affordable portable disk that gives me 100GB to store whatever I need, like bunches of security tools and even an alternative OS. Plus I can carry it around in my pocket. http://www.windowsitpro.com/Article/ArticleID/50549

FAQ

by John Savill, http://www.windowsitpro.com/windowsnt20002003faq

Q: Why does the Windows Server 2003 R2 File Server Resource Manager (FSRM) file screen audit report contain three entries for file screen violations?

Find the answer at

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Security Forum Featured Thread: Using Administrator Account Is a Security Offense

A forum participant wonders why it's a serious security offense in some organizations for a network administrator to use the Administrator account for routine work. Join the discussion at

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