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Message-ID: <20040315211641.GA29669@piper.madduck.net> From: madduck at madduck.net (martin f krafft) Subject: Re: a secure base system also sprach Valdis.Kletnieks@...edu <Valdis.Kletnieks@...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@...duck 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" -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: Digital signature Url : http://lists.grok.org.uk/pipermail/full-disclosure/attachments/20040315/4df80584/attachment.bin
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