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Is there an example program that illustrates how a buffer overflow attack actually executes arbitrary code? (lemmy.dbzer0.com)

submitted 1 month ago* (last edited 1 month ago) by LainTrain@lemmy.dbzer0.com to c/programming@programming.dev

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I've found lots of examples in C of programs illustrating buffer Overflows, including those of pointer rewrites which has been of great help in understanding how a buffer overflow works and memory safety etc. but I've yet to be able to find an example illustrating how such a buffer overflow can rewrite a pointer in such a way that it actually results in code execution?

Is this just not a thing, or is my google-fu rust y? Tried ChatGPT and my local Mistral and they both seem unable to spit out precisely what I'm asking, so maybe I'm wording this question wrong.

If anyone in here knows, could point me in the right direction? Thanks y'all btw love this community 🧡

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[–] paw 4 points 1 month ago

Thanks for your reply. This extends "smashing the stack for fun and profit" in an important way.