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26 September 2006

Microsoft breaks monthly patch cycle to release VML exploit fix Critical day zero vulnerability patched by Microsoft

Microsoft has released a patch for the critical vulnerability in its software
Microsoft has released a patch for the critical vulnerability in its software

Experts at SophosLabs™, Sophos's global network of virus, spyware and spam analysis centers, have urged companies to apply a Microsoft security patch which reportedly fixes a critical vulnerability in the way Internet Explorer handles Vector Markup Language (VML). Microsoft has released a fix a week after it was discovered that hackers were using the exploit to install malicious code onto innocent users' computers.

Microsoft has broken its regular monthly patch release cycle to publish a fix for the vulnerability ahead of schedule.

Sophos researchers have seen a number of different pieces of malware being distributed via the flaw, including Troj/Dloadr-ANO, Troj/Goldun-EC, and Troj/Goldun-EE.

"Microsoft's developers were smarting after it was discovered that hackers were actively exploiting a vulnerability for which they had no fix, so it's good news for all Windows users that a patch is now available," said Graham Cluley, senior technology consultant for Sophos. "Computer users should ensure their PCs are protected with this patch at the earliest possible opportunity."

Home users of Microsoft Windows can visit update.microsoft.com to have their systems scanned for critical Microsoft security vulnerabilities.

Sophos suggests that every IT manager responsible for security should consider subscribing to vulnerability mailing lists such as that operated by Microsoft at www.microsoft.com/technet/security/bulletin/notify.mspx.

Sophos continues to recommend that companies protect their computers with a consolidated solution to thwart the virus, spyware and spam threats and secure their desktops and servers with automatically updated anti-virus protection, the latest security patches, and properly configured firewalls.

About Sophos

Sophos enables enterprises all over the world to secure and control their IT infrastructure. Sophos's network access control, endpoint, web and email solutions simplify security to provide integrated defenses against malware, spyware, intrusions, unwanted applications, spam, policy abuse, data leakage and compliance drift. With over 20 years of experience, Sophos protects over 100 million users in nearly 150 countries with its reliably engineered security solutions and services. Recognized for its high level of customer satisfaction and powerful yet easy-to-use solutions, Sophos has received many industry awards, as well as positive reviews and certifications.

Sophos is headquartered in Boston, US and Oxford, UK. More information is available at www.sophos.com

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