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michael.jenkin

When is an Image file not an Image file ? (Another security Video)

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https://forums.atomicmpc.com.au/forum/56-storage-networking-security/

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So what's the deal, how does an exe do anything inside a jpg? Surely any program that goes to open the image either just reads the image or rejects the file? 

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WIthout having watched this one - the trick with JPG executables was to encode the "picture" such that a stack overflow occurs which inadvertantly leads to their code being run.

A main preventitive of that is DEP which allows fencing off sections of memory to disallow programs wandering where they aren't supposed to.

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