full-disclosure - Re: [FD] #WorldPenguinDay or this cant be right, can it?

Open Source and information security mailing list archives

Date: Thu, 30 Apr 2015 20:25:07 -0700
From: Tavis Ormandy <taviso@...xchg8b.com>
To: fulldisclosure@...lists.org
Subject: Re: [FD] #WorldPenguinDay or this cant be right, can it?

PIN <zero@...c.co> wrote:

> address space layout of a linux process.

It sounds like you're asking "If I can learn an address, have I defeated
ASLR", and the answer is usually yes. It depends on the circumstances of
course, but leaking any address to an attacker would usually be considered a
bug and renders ASLR essentially useless.

For example, if you can find some JavaScript that tells you the address of
an object on the heap or the base address of a module, that would be
considered a security bug. You don't usually run untrusted python, so
python's id() isn't a bug - but you do run untrusted JavaScript.

Tavis.

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