Re: Trojan Horse for Mac OS X

["Mary Landesman" <mlande () bellsouth net>]

Judging from the number of people who use those mail clients and still
manage to infect themselves with whatever email worm du jour, I'd guess
quite a few. :-)

I try never to underestimate the end user. I don't know how many times I've
looked at someone's 'allowed' list on a permission-based firewall and found
various spyware and Trojans sitting there with full rights. And the
attachment feature in Outlook and OE is just buggy enough to cause lots of
folks to disable it, just to view (for example) a perfectly benign pdf. Once
it's been disabled, it's relatively easy to forget to go back and enable it.

-- Mary

----- Original Message ----- 
From: "Larry Seltzer" <larry () larryseltzer com>
To: "'Mary Landesman'" <mlande () bellsouth net>
Cc: "'Full-Disclosure'" <full-disclosure () lists netsys com>
Sent: Friday, April 09, 2004 9:12 PM
Subject: RE: [Full-disclosure] Trojan Horse for Mac OS X


You might have noticed I said "by default". How many people do you really
think change
that setting. Seriously.

Larry Seltzer
eWEEK.com Security Center Editor
http://security.eweek.com/
http://blog.ziffdavis.com/seltzer
larryseltzer () ziffdavis com
-----Original Message-----
From: full-disclosure-admin () lists netsys com
[mailto:full-disclosure-admin () lists netsys com] On Behalf Of Mary Landesman
Sent: Friday, April 09, 2004 7:45 PM
To: Larry Seltzer; 'Joshua Levitsky'; 'Thomas Vincent'
Cc: 'Full-Disclosure'
Subject: Re: [Full-disclosure] Trojan Horse for Mac OS X

Check out Tools, Options, Security, Do not allow executable attachments...

Uncheck it. Voila. Still there. Not removed. Just suppressed. And under
complete end
user control.

-- Mary

----- Original Message -----
From: "Larry Seltzer" <larry () larryseltzer com>
To: "'Joshua Levitsky'" <jlevitsk () joshie com>; "'Thomas Vincent'"
<thomasv () mac com>
Cc: "'Full-Disclosure'" <full-disclosure () lists netsys com>
Sent: Friday, April 09, 2004 6:53 PM
Subject: RE: [Full-disclosure] Trojan Horse for Mac OS X


> > This technique wouldn't work now because Mail.app, and probably all
> > modern mail client. Will not let you execute code from within the mail
> > client.

> Completely untrue. Mail.app will ask you if you want to open the app just
like Outlook
Express on Windows does.

Actually, Outlook Express and Outlook will (by default) strip all executable
attachments
before you even get them. They've done this for some time.

Larry Seltzer
eWEEK.com Security Center Editor
http://security.eweek.com/
http://blog.ziffdavis.com/seltzer
larryseltzer () ziffdavis com

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Charter: http://lists.netsys.com/full-disclosure-charter.html


_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html