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Exploiting CVE-2021-43267

a heap overflow vulnerability in the TIPC subsystem of the Linux kernel was disclosed by Max van Amerongen (@maxpl0it). He posted a detailed writeup about the bug on the SentinelLabs website.

It’s a pretty clear cut heap buffer overflow where we control the size and data of the overflow. I decided I wanted to embark on a small exploit dev adventure to see how hard it would be to exploit this bug on a kernel with common mitigations in place (SMEP/SMAP/KPTI).

The full exploit can be found here.

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Posted by SH

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