Re: Suspicious files in /tmp

[Cy Schubert <Cy.Schubert () komquats com>]

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



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