Full Disclosure mailing list archives
Re: a secure base system
From: martin f krafft <madduck () madduck net>
Date: Mon, 15 Mar 2004 22:16:41 +0100
also sprach Valdis.Kletnieks () vt edu <Valdis.Kletnieks () vt edu> [2004.03.15.2108 +0100]:
On typical Linux distributions noexec is pointless. It does not prevent the execution of dynamically linked ELF images. $ readelf -l /bin/bash | grep interpreter [Requesting program interpreter: /lib/ld-linux.so.2] $ /lib/ld-linux.so.2 /bin/bash --version GNU bash, version 2.05b.0(1)-release (i386-redhat-linux-gnu) Copyright (C) 2002 Free Software Foundation, Inc.This is fixed in the 2.6 kernel.
Wow, I didn't know this. Thanks for letting us know! piper:~> uname -a Linux piper 2.6.4-piper #1 Sun Mar 14 18:37:46 CET 2004 i686 GNU/Linux piper:~> cp /bin/bash /tmp piper:~> /lib/ld-linux.so.2 /tmp/bash --version /tmp/bash: error while loading shared libraries: /tmp/bash: failed to map segment from shared object: Operation not permitted -- martin; (greetings from the heart of the sun.) \____ echo mailto: !#^."<*>"|tr "<*> mailto:" net@madduck invalid/expired pgp subkeys? use subkeys.pgp.net as keyserver! bill gates, 1984: "640 k ought to be enough" bill gates, 1995: "the internet is not a primary goal for pc usage" bill gates, 1999: "linux has no impact on microsoft's strategy"
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Current thread:
- Re: Re: a secure base system, (continued)
- Re: Re: a secure base system Tobias Weisserth (Mar 15)
- Re: Re: a secure base system martin f krafft (Mar 15)
- Re: Re: Re: a secure base system Tobias Weisserth (Mar 15)
- Re: Re: Re: a secure base system martin f krafft (Mar 15)
- Re: a secure base system Alexander Bartolich (Mar 15)
- Re: a secure base system Valdis . Kletnieks (Mar 15)
- Re: a secure base system martin f krafft (Mar 15)
- Re: Re: a secure base system Tobias Weisserth (Mar 15)
- Re: a secure base system Yusuf Wilajati Purna (Mar 22)