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 :: Mailing Lists

[ILUG] kernel security hole

[ILUG] kernel security hole

oscar cassetti oscar.getstring at gmail.com
Wed Feb 13 17:22:20 GMT 2008


Hi,

I think that if you are running a 2.4 kernel series you are ok. I
believe you should run this kernel if your server is mission critical.
You can always update to 2.6.24.2 or downgrade to kernels prior to 2.6.17.
Then there are some general security tricks that prevent those kind of problem.
Eg. if a compiler is not installed then it is more difficult to
compile those stuff.  You should also run webserver in chroot
environments.
PAM and stuff like aide and syslog ng can help.
some references
http://kerneltrap.org/node/15471
http://kerneltrap.org/Linux/Patching_CVE-2008-0600_Local_Root_Exploit

Oscar
>
>
> On Feb 13, 2008 11:18 AM, Justin Mason <jm at jmason.org> wrote:
> >
> > FRLinux writes:
> > >On Feb 13, 2008 10:48 AM, David Howe <david.howe at howesystems.com> wrote:
> > >> Does anyone know if you require sudo enabled in order to run the exploit?
> > >
> > >No, normal user with no privileges will be able to crack your box in
> > >10 seconds. Works on most kernels including all xen ones and even
> > >GRsec/PaX/SELinux ones. Scary stuff really.
> >
> > more details at
> > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=464953
> >
> > There are "live" hotfixes, but they seem to cause instability, so
> > best avoided.
> >
> > --j.
> >
> > --
> > Irish Linux Users' Group mailing list
> > About this list : http://mail.linux.ie/mailman/listinfo/ilug
> > Who we are : http://www.linux.ie/
> > Where we are : http://www.linux.ie/map/
> >
>



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