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Re: (fwd) [Linux-ISP] U R G E N T!!!! S E C U R I T Y A L E R T!!!!!!! READ NOW!!

daemon@ATHENA.MIT.EDU (Greg Gallagher)
Fri Oct 6 15:42:22 1995

Date: Thu, 5 Oct 1995 09:30:35 -0500 (CDT)
From: Greg Gallagher <ggallag@orion.it.luc.edu>
To: Panzer Boy <panzer@dhp.com>
cc: linux-security@tarsier.cv.nrao.edu
In-Reply-To: <199510041528.LAA20720@dhp.com>


> I have recently discovered a security flaw in pop3d Version 1.004 with 
> shadow password support.  (Not sure about the version without shadow 
> support, but you might want to check).  I discovered that after changing 

 yeah ... the problem lies in that for some reason, the shadow library 
doesn't compile in the object valid.o.  I've no clue why, I didn't really 
look too deeply into it, I just recompiled the popd and linked the 
valid.o to it, and it worked like a charm.  If this is the same problem 
I'm thinking of, sorry I can't get line numbers, but the problem is with 
the line that contains the valid() function in the pop source, I believe.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
Greg Gallagher	<ggallag@luc.edu> | "When the fox gnaws--smile!"
Loyola University, student	  |
(312)973-9375			  |         -- L. L.
pgp key avilable upon request	  | 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

On Wed, 4 Oct 1995, Panzer Boy wrote:

> Has anyone poked into this yet? I just gleamed it off of of the Linux ISP 
> list.  I am running pop from the pine imap code (w/ shadow changes) and 
> wasn't able to verify this problem, though I don't usually run bins I 
> gleam from sunsite, et al.
> 
> pine3.91 imap/pop shadow patches can be grabbed from:
>  ftp.dhp.com:/pub/linux/security/pine.shadow
> 
> --
>  -Matt     (panzer@dhp.com)                         DI-1-9026
>  "That which can never be enforced should not be prohibited."
> 
> 
> Path: news.dhp.com!news.dhp.com!not-for-mail
> From: System Administrator <root@maz.mlx.net>
> Newsgroups: mail.linux-isp
> Subject: [Linux-ISP] U R G E N T!!!!   S E C U R I T Y  A L E R T!!!!!!!   READ NOW!!
> Date: 1 Oct 1995 19:19:35 -0400
> Message-ID: <Pine.LNX.3.91.951001154303.27369A-100000@maz.mlx.net>
> To: linuxisp@lightning.com
> 
> to shadow support and compiling and testing all of my programs (i.e. 
> ftpd, pop3d, login, etc) that the pop3d allowed me to view anyone mail on 
> my system, no matter what password I put in.  Thinking that it was maybe 
> something I had wrong I telneted to the pop3 port on a few of the shadow 
> linux systems I knew about.  EVERY System I tried that was running 1.004 
> allowed me to read anyone on that systems mail.  I have looked at the 
> code and have narrowed it down to the util.c file, but am in no way a 
> very good c programmer.  I am putting out this notice to warn everone and 
> to hope that someone will come up with a fix very quickly.  And since my 
> newsfeed is down for the weekend would someone please post this on the 
> newsgroups and anywhere else you might think it will get distributed the 
> fastest.  Thanks.
> 
> 
> 
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