Saturday, April 17, 2010


This bug was discovered back in december 2009, and patched by microsoft in April 2010.
This issue is a basic stack overflow affecting only windows 7/2008R2 smb1 implementation.
It's actually a nice bug as the affected function is not protected by a canary, and allow us to redirect the flow anywhere we want to.
You can find the full advisory about this bug here :
Have phun !
PoC url :


Anonymous said...

Is there a full disclosure about the other bugs you found that were patched in MS10-020?
According to MS they sound even more dangerous than this one (affects multiple OS)

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