Email Vulnerabilities
Julian Field
mailscanner at ecs.soton.ac.uk
Tue Sep 24 09:47:25 IST 2002
At 05:54 24/09/2002, you wrote:
>Hi guys, I just updated my mailscanner from 3.22-7 to 3.23-1 and what I have
>found out is the speed, its more faster now
Yay! Someone noticed the optimisations I did in 3.22-something in the way
of re-ordering all the "if" statements to reduce the number of system calls
by 50%.
:-)
>One thing I am wondering with, why does this eicar.com gfi test email goes
>to my outlook express deleted items with a modified subject {VIRUS?}
>eicar.com [1/5] up to [5/5] and theres no warning message in the body and
>the attachment is intact with the filename eicar.com. im just wondering
>about this.
Can anyone else corroborate this? V3 should have deleted the entire message
in each of those cases.
>Also, I am using Sophos and I got this message in my console "Useful life of
>SWEEP has beed exceeded" does the Sophos doesn't work anymore?
You need to entirely replace Sophos once every 2 to 3 months, as that is
how long they provide IDE files for any given version of Sophos.
Download the .tar.Z from the website, stick it in /tmp then do
cd /tmp
/usr/local/MailScanner/bin/Sophos.install
*Please* don't try and use Sophos's install script, it makes a bit of a
mess of things :(
>----- Original Message -----
>From: "Glynn S. Condez" <glynn at MAKATI.TECHSQUARE.COM>
>To: <MAILSCANNER at JISCMAIL.AC.UK>
>Sent: Tuesday, September 24, 2002 10:37 AM
>Subject: Re: Email Vulnerabilities
>
>
> > Thanks Jeff for the great idea, it seems that there's nothing that I need
> > to reconfigure except for the conf files of mailscanner.
> >
> >
> > --- Glynn ---
> >
> > ----- Original Message -----
> > From: "Jeff A. Earickson" <jaearick at COLBY.EDU>
> > To: <MAILSCANNER at JISCMAIL.AC.UK>
> > Sent: Tuesday, September 24, 2002 10:28 AM
> > Subject: Re: Email Vulnerabilities
> >
> >
> > > Hi,
> > > I set up my mailscanner directory thus:
> > >
> > > lrwxrwxrwx 1 root daemon 10 Sep 23 14:01 bin -> bin-3.23-1/
> > > drwxr-xr-x 2 root none 1024 Sep 13 10:23 bin-3.22-14/
> > > drwxr-xr-x 2 root none 1024 Sep 23 13:46 bin-3.23-1/
> > > lrwxrwxrwx 1 root daemon 10 Sep 23 14:01 etc -> etc-3.23-1/
> > > drwxr-xr-x 2 root none 1024 Sep 13 10:29 etc-3.22-14/
> > > drwxr-xr-x 2 root none 1024 Sep 23 13:55 etc-3.23-1/
> > > drwxr-xr-x 3 root none 512 May 2 11:52 man/
> > > drwxr-xr-x 8 jaearick jaearick 512 Sep 23 14:06 src/
> > > drwx------ 4 root none 512 May 3 09:38 var/
> > >
> > > When a new version of mailscanner comes out, I untar it and move the
> > > mailscanner/etc and mailscanner/bin directories to etc-[version]
> > > and bin-[version]. Then I do side-by-side comparisons of the default
> > > config versus my setup. When I've carried my config changes into the
> > > new etc files, I stop mailscanner, change the symlinks, restart
> > > mailscanner. Virtually no down time. It would be nice if this
> > > kind of directory versioning was incorporated into the tarfiles
> > > for v4 somehow...
> > >
> > > ** Jeff A. Earickson, Ph.D PHONE: 207-872-3659
> > > ** Senior UNIX Sysadmin, Information Technology EMAIL:
> > jaearick at colby.edu
> > > ** Colby College, 4214 Mayflower Hill, FAX: 207-872-3076
> > > ** Waterville ME, 04901-8842
> >
> > --------------------------------------------------------------------------
> > --
> > >
> > > On Tue, 24 Sep 2002, Glynn S. Condez wrote:
> > >
> > > > Date: Tue, 24 Sep 2002 10:18:03 +0800
> > > > From: Glynn S. Condez <glynn at MAKATI.TECHSQUARE.COM>
> > > > Reply-To: MailScanner mailing list <MAILSCANNER at JISCMAIL.AC.UK>
> > > > To: MAILSCANNER at JISCMAIL.AC.UK
> > > > Subject: Re: Email Vulnerabilities
> > > >
> > > > oh by the way, this the first time that I am going to upgrade the
> > > > mailscanner, is it possible if I am going to rename the old
>mailscanner
> > > > directory and install the new version of mailscanner as mailscanner?
> > > >
> > > > or is there anything that I need to be reconfigure?
> > > >
> > > > Thanks
> > > > --- Glynn ---
> > > >
> > > > ----- Original Message -----
> > > > From: "Glynn S. Condez" <glynn at MAKATI.TECHSQUARE.COM>
> > > > To: <MAILSCANNER at JISCMAIL.AC.UK>
> > > > Sent: Tuesday, September 24, 2002 10:02 AM
> > > > Subject: Re: Email Vulnerabilities
> > > >
> > > >
> > > > > This mailing list is great, the response is so fast :) well I'll
>do
> > the
> > > > > upgrade, email you guys about the results.
> > > > >
> > > > > thanks
> > > > >
> > > > > --- Glynn ---
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Mike Kercher" <mike at CAMAROSS.NET>
> > > > > To: <MAILSCANNER at JISCMAIL.AC.UK>
> > > > > Sent: Tuesday, September 24, 2002 10:05 AM
> > > > > Subject: Re: Email Vulnerabilities
> > > > >
> > > > >
> > > > > > Try upgrading to 3.22-15 I think Julian got it to detect all of
>the
> > > > > vulnerabilities.
> > > > > >
> > > > > >
> > > > > > -----Original Message-----
> > > > > > From: MailScanner mailing list
>[mailto:MAILSCANNER at JISCMAIL.AC.UK]On
> > > > > > Behalf Of Glynn S. Condez
> > > > > > Sent: Monday, September 23, 2002 8:58 PM
> > > > > > To: MAILSCANNER at JISCMAIL.AC.UK
> > > > > > Subject: Email Vulnerabilities
> > > > > >
> > > > > >
> > > > > > Based on these website http://www.gfi.com/emailsecuritytest, some
> > of
> > > > the
> > > > > > test email that contents a test virus or codes goes through and
>the
> > > > > > mailscanner doesn't detect the embedded scripts in the emails.
> > > > > >
> > > > > > In version 4, is it possible to scan these kinds of viruses or
>code?
> > by
> > > > > the
> > > > > > way I'm using the stable version of mailscanner 3-22.7 with
> > > > > > spamassassin2-31.
> > > > > >
> > > > > >
> > > > > > --- Glynn ---
> > > > > >
> > > > >
> > > >
> > >
> >
--
Julian Field Teaching Systems Manager
jkf at ecs.soton.ac.uk Dept. of Electronics & Computer Science
Tel. 023 8059 2817 University of Southampton
Southampton SO17 1BJ
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