Performance Issues For WMF

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Microsoft recently faced a tough challenge, dealing with the “zero-day” exploit. This past week they released a fix early instead of on the standard patch Tuesday in order to alleviate the fears of users around the world. Over the weekend, another problem with the WMF turned up.

According to the Microsoft Security Center Blog, the problem isn’t necessarily exploitable; it’s a performance problem. Apparently, a new, specially crafted WMF image can cause the Windows Graphic Rendering Engine to crash. It just causes some apps to unexpectedly crash.

They pointed out they had previously identified these issues as part of their code maintenance:

Lennart Wistrand here. I wanted to write a few lines about the public post made over the weekend about a new specially crafted WMF image that could potentially cause the application using the Windows Graphics Rendering Engine to crash. As it turns out, these crashes are not exploitable but are instead Windows performance issues that could cause some WMF applications to unexpectedly exit.

These issues do not allow an attacker to run code or crash the operating system. They may cause the WMF application to crash, in which case the user may restart the application and resume activity. We had previously identified these issues as part of our ongoing code maintenance and are evaluating them for inclusion in the next service pack for the affected products.

Window’s January patch release should hit today. It was originally to cover the WMF exploit, but Microsoft sent that one out early. The one today still includes two critical updates. It’s recommended people pick up these important updates and resume the regularly scheduled updates.

John Stith is a staff writer for WebProNews covering technology and business.

Performance Issues For WMF
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