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Re: Local suid files and buffer overflows
From: Pieter de Boer <pieter () thedarkside nl>
Date: Sun, 09 Oct 2005 18:29:28 +0200

Werner Schalk wrote:

Now I exploited it using Aleph One's shellcode (see http://shellcode.org/shellcode/linux/null-free/) but I won't get a SUID shell afterwards (I know the exploit did work but I still have my normal user privleges). Why? I have tried a different shellcode to write a file and this file was root:root. Any ideas, hints, rtfm?
Some shells (at least bash, that I know of) drop privileges when uid != euid. That's why I 'always' use zsh, which doesn't do that ;)

--
Pieter
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