Microsoft originally addressed a Duqu malware vulnerability around five months ago, but the company says it has patched additional attack vectors for the underlying root cause during this month's Patch Tuesday. There's seven bulletins in total to address 23 flaws across a variety of Microsoft products, leading to a busy Windows Update cycle for consumers and IT departments alike.
Microsoft's critical MS12-034 bulletin targets the vulnerable Duru-related code in particular, affecting all supported versions of Windows, Microsoft Office 2003, 2007, and 2010, alongside Silverlight 4 and 5. Microsoft .NET Framework 4 users will also be affected. The company says it's addressing the flaws in related products after its research team developed a "Cloned Code Detection" system to find any instance of the vulnerable code across multiple products. All the updates are now available on Windows Update.
Update: Microsoft has reached out to us to confirm that the company has not received any reports that indicate the attack vectors, addressed in MS12-034, have been publicly used to attack customers.
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