Home Security Security firm issues patch for Windows zero-day

Security firm issues patch for Windows zero-day

A security firm has released a patch for a remotely exploitable vulnerability in Windows that Microsoft is expected to patch on 14 March.

Acros Security's 0patch team member Luka Treiber said this was the first time the company had issued code to fix a zero-day exploit.

He has provided a detailed rundown of his methodology on the firm's website.

Anyone wishing to use the patch has to download 0patch's patching agent and then obtain the code.

The bug in question is in the Windows graphic device interface library and can be exploited to read the contents of a user's memory.

It was made public by a Google researcher soon after Microsoft cancelled the issue of security updates for February, giving no reason for it.

The library, gdi32.dll, enables applications to use graphics and formatted text on both the video display and the printer.

"I have confirmed that the vulnerability reproduces both locally in Internet Explorer, and remotely in Office Online, via a .docx document containing the specially crafted EMF file," security researcher Mateusz Jurczyk wrote at the time.

When Microsoft was asked for comment about Google's actions, it responded: "Windows is the only platform with a customer commitment to investigate reported security issues, and proactively update impacted devices.

"Our standard policy is to provide solutions via our current Update Tuesday schedule."

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Sam Varghese

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A professional journalist with decades of experience, Sam for nine years used DOS and then Windows, which led him to start experimenting with GNU/Linux in 1998. Since then he has written widely about the use of both free and open source software, and the people behind the code. His personal blog is titled Irregular Expression.

 

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