Ethical Hacking

Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package.
Computer Forensics Training at InfoSec Institute

Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors.




Network Security Pen-Test
[Top] [All Lists]
<prev [Date] next>
[Advanced]
 <prev [Thread] next>

Re: how an hacker can bypass a chrooted environement ?

from [Tonnerre Lombard] Network Security [Permanent Link]
Subject: Re: how an hacker can bypass a chrooted environement ?
Date: Sat, 13 May 2006 06:57:02 +0100 
Salut,

On Fri, 2006-05-12 at 11:37, Norbert Fran?ois wrote:

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 ?


For example by getting a dir file descriptor from "outside" and
fchrooting to that one.

                                Tonnerre
-- 
SyGroup GmbH
Tonnerre Lombard

Loesungen mit System
Tel:+41 61 333 80 33    Roeschenzerstrasse 9
Fax:+41 61 383 14 67    4153 Reinach
Web:www.sygroup.ch      tonnerre.lombard@sygroup.ch

Attachment: signature.asc
Description: This is a digitally signed message part

[More messages with this same subject...]




<Prev in Thread] Current Thread [Next in Thread>
Previous by Date:  Re: Nmap/Mysql, David M. Zendzian
Next by Date:  Re: Nmap/Mysql, Tim
Previous by Thread:  Re: how an hacker can bypass a chrooted environement ?, Rob
Next by Thread:  Re: how an hacker can bypass a chrooted environement ?, Norbert François
Indexes:  [Date] [Thread] [Top] [All Lists]