[33201] in bugtraq

home help back first fref pref prev next nref lref last post

Re: Hijacking Apache 2 via mod_perl

daemon@ATHENA.MIT.EDU (=?ISO-8859-15?Q?Andr=E9?= Malo)
Thu Jan 22 17:07:28 2004

Date: Thu, 22 Jan 2004 18:42:28 +0100
From: =?ISO-8859-15?Q?Andr=E9?= Malo <nd@perlig.de>
To: 3APA3A <3APA3A@SECURITY.NNOV.RU>
Cc: Ben Laurie <ben@algroup.co.uk>, Steve Grubb <linux_4ever@yahoo.com>,
        bugtraq@securityfocus.com, httpd security <security@httpd.apache.org>
Message-Id: <20040122184228.00002028.nd@perlig.de>
In-Reply-To: <60705914.20040122203700@SECURITY.NNOV.RU>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit

* 3APA3A <3APA3A@SECURITY.NNOV.RU> wrote:

> You're  right: mod_perl is inside apache memory space and can access any
> descriptor, so it's impossible to blame apache descriptor is leaked. But
> you're  wrong. mod_perl has access to memory, not perl script. At least,
> it's  possible  to  store  descriptors  table  and  implement  check for
> descriptor  in  every  perl  file/socket  function  inside mod_perl (and
> mod_php  and mod_something) and only allow access to std descriptors and
> to  descriptors open inside same script. The choice is between speed and
> security.

Then one just writes a perl extension in C. Who's responsible then?
Who's responsible if you just write a C module which hijacks the
descriptors? Where do you draw the line?

nd

home help back first fref pref prev next nref lref last post