From owner-freebsd-ports@FreeBSD.ORG  Sat Nov 10 15:44:15 2007
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Date: Sat, 10 Nov 2007 07:44:07 -0800
From: Jeremy Chadwick <koitsu@FreeBSD.org>
To: Mike -freebsd <mike.freebsd@gmail.com>
Message-ID: <20071110154407.GA11692@eos.sc1.parodius.com>
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Cc: freebsd-ports@freebsd.org
Subject: Re: 4203:31337 (possible exploit?)
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On Sat, Nov 10, 2007 at 03:25:57PM +0100, Mike -freebsd wrote:
> Guys, is anyone else seeing this?
> drwxr-xr-x  69 4203  31337  1536 Nov  9 13:59 ports
> 
> I see this on three of four FreeBSD 7 boxes and only on /usr/ports/
> (why...?). Anyone else?

Four different boxes of ours:

$ uname -r && ls -ld /usr/ports
6.2-STABLE
drwxr-xr-x   69 root      wheel     2048 10 Nov 02:14 /usr/ports/

$ uname -r && ls -ld /usr/ports
6.3-PRERELEASE
drwxr-xr-x   69 root      wheel     1536 10 Nov 02:12 /usr/ports/

$ uname -r && ls -ld /usr/ports
7.0-PRERELEASE
drwxr-xr-x   69 root      wheel     1536  7 Nov 02:24 /usr/ports/

$ uname -r && ls -ld /usr/ports
7.0-BETA2
drwxr-xr-x   69 root      wheel     1536 10 Nov 02:19 /usr/ports/

Sounds like you may have a security problem (re: "31337" GID).  If
that's the case, I would strongly advocate formatting + reinstalling
those machines.

-- 
| Jeremy Chadwick                                    jdc at parodius.com |
| Parodius Networking                           http://www.parodius.com/ |
| UNIX Systems Administrator                      Mountain View, CA, USA |
| Making life hard for others since 1977.                  PGP: 4BD6C0CB |