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Re: [Full-Disclosure] a secure base system
- To: tobias@xxxxxxxxxxxx
- Subject: Re: [Full-Disclosure] a secure base system
- From: Alexander Bartolich <alexander.bartolich@xxxxxx>
- Date: Mon, 15 Mar 2004 20:27:48 +0100
Tobias Weisserth wrote:
> /tmp should always be mounted noexec. Add /home as well with noexec.
> [...] This may be a trade-off, but the result is more security.
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.
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