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| Subject: | Re: Suspicious files in /tmp |
|---|---|
| Date: | Thu, 21 Jun 2007 13:05:44 -0700 |
In message <46277.194.74.82.3.1182425927.squirrel@galain.elvandar.org>, "Remko Lodder" writes:
Hello Matt,
Indeed FreeBSD doesn't respect the cases where a shell script is on a
noexec mounted device; but where /bin/sh is still executable (/bin/sh
/tmp/script for example). From the Manual page this should be clear that
it is not designed as a security measure but to aid other activities; it
is unlikely that we (see the archives for more information, this had been
discussed a couple of times) will change this behaviour (since the design
isn't for
security):
mount(8):
noexec Do not allow execution of any binaries on the mounted
file system. This option is useful for a server that
has
file systems containing binaries for architectures other
than its own. Note: This option was not designed as a
security feature and no guarantee is made that it will
prevent malicious code execution; for example, it is
still possible to execute scripts which reside on a
noexec mounted partition.
Hope this helps aiding you a bit with the information we can deliver.
All that is needed to execute a shell script is read access. -- Cheers, Cy Schubert <Cy.Schubert@komquats.com> FreeBSD UNIX: <cy@FreeBSD.org> Web: http://www.FreeBSD.org e**(i*pi)+1=0 ------------------------------------------------------------------------- This list sponsored by: SPI Dynamics ALERT: .How a Hacker Launches a SQL Injection Attack!.- White Paper It's as simple as placing additional SQL commands into a Web Form input box giving hackers complete access to all your backend systems! Firewalls and IDS will not stop such attacks because SQL Injections are NOT seen as intruders. Download this *FREE* white paper from SPI Dynamics for a complete guide to protection! https://download.spidynamics.com/1/ad/sql.asp?Campaign_ID=70160000000Cn8E --------------------------------------------------------------------------
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