From: alan (alan@clueserver.org)
Date: Fri May 12 2006 - 13:26:28 EDT
On Fri, 12 May 2006, Norbert François wrote:
> Hi...
>
> I was wondering how an attacker can bypass a chrooted environement. A
> (common) technique consist in finding a vulnerable program (in the
> chrooted environnement) and injecting it a shellcode (i.e
> ../../../../../../../bin/bash for ex.) by BoF. But normally, in the
> chrooted environement, you volontarily add only necessary tools (like
> ls, cat, less...), and vulnerable softwares are uncommon...
>
> So... how do they this "exploit" of bypassing the chroot ?
They chroot more times than the kernel can handle. The system then fails
open without the chroot.
-- "Waiter! This lambchop tastes like an old sock!" - Sheri Lewis
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