Watch it: Multiple DNS implementations vulnerable to cachepoisoning

Jason Ede J.Ede at birchenallhowden.co.uk
Thu Jul 10 12:03:24 IST 2008


Got it... I commented those lines out from the named.caching-nameserver.conf file and its all happy and reporting as good now...

That file is as delivered by Centos yum install caching-nameserver.

Jason

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of Randal, Phil
> Sent: 10 July 2008 11:32
> To: MailScanner discussion
> Subject: RE: Watch it: Multiple DNS implementations vulnerable to
> cachepoisoning
>
> Have you made sure that in named.conf there are no
>
>   query-source    port 53;
>   query-source-v6 port 53;
>
> lines?
>
> Cheers,
>
> Phil
>
> --
> Phil Randal
> Networks Engineer
> Herefordshire Council
> Hereford, UK
>
> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Jason
> Ede
> Sent: 10 July 2008 11:15
> To: MailScanner discussion
> Subject: RE: Watch it: Multiple DNS implementations vulnerable to
> cachepoisoning
>
> I've patched some servers and they're showing good, but on one behind a
> firewall its still showing as poor despite the update being run... Its
> running Centos5.1
>
> Jason
>
>
> > -----Original Message-----
> > From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> > bounces at lists.mailscanner.info] On Behalf Of shuttlebox
> > Sent: 10 July 2008 09:42
> > To: MailScanner discussion
> > Subject: Re: Watch it: Multiple DNS implementations vulnerable to
> > cache poisoning
> >
> > On Thu, Jul 10, 2008 at 3:54 AM, Ken A <ka at pacific.net> wrote:
> > > They are probably not random enough. You can look at them with
> > netstat or
> > > lsof -i
> >
> > OK, it's the standard deviation that is key to the result. Unique
> > ports but all in a row for example is of course not good.
> >
> > I have now patched one server and it shows GOOD with a high std dev.
> >
> > /peter
> > --
> > Robert Benchley  - "Drawing on my fine command of the English
> > language, I said nothing."
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