5060204 2000-05-03  19:27  /177 rader/ Postmaster
Mottagare: Bugtraq (import) <10715>
Ärende: SuSE Security Announcement - aaa_base - UPDATE
------------------------------------------------------------
Approved-By: aleph1@SECURITYFOCUS.COM
Delivered-To: bugtraq@lists.securityfocus.com
Delivered-To: bugtraq@securityfocus.com
Message-ID:  <20000502195913.B13DF67A5@Galois.suse.de>
Date:         Tue, 2 May 2000 21:59:13 +0200
Reply-To: Marc Heuse <marc@SUSE.DE>
Sender: Bugtraq List <BUGTRAQ@SECURITYFOCUS.COM>
From: Marc Heuse <marc@SUSE.DE>
To: BUGTRAQ@SECURITYFOCUS.COM

-----BEGIN PGP SIGNED MESSAGE-----


  UPDATE INFORMATION

  The original announcement pointed to update rpms which were old and
  did *NOT* fix the vulnerabilities.

  We apologize for this mistake.

______________________________________________________________________________

                        SuSE Security Announcement

        Package: aaabase < 2000.5.2
        Date:    Tue May  2 21:56:21 CEST 2000

        Affected SuSE versions: all
        Vulnerability Type:     remove any local file(s)
                                executing attacker supplied commands as non-root
	SuSE default package:   yes
	Other affected systems: unknown
______________________________________________________________________________

A security hole was discovered in the package mentioned above.
Please update as soon as possible or disable the service if you are
using this software on your SuSE Linux installation(s).

Other Linux distributions or operating systems might be affected as
well, please contact your vendor for information about this issue.

Please note that we provide this information on an "as-is" basis
only.  There is no warranty whatsoever and no liability for any
direct, indirect or incidental damage arising from this information
or the installation of the update package.
_____________________________________________________________________________

1. Problem Description

  aaa_base is the basic package which comes with any SuSE Linux
  installation.  Two vulnerabilities have been found:

  1) The cron job /etc/cron.daily/aaa_base does a daily checking of
  files in /tmp and /var/tmp, where old files will be deleted if
  configured to do so.  Please note this this feature is NOT
  activated by default

  2) Some system accounts have their homedirectories set to /tmp by
  default.  These are the users games, firewall, wwwrun and nobody on
  a SuSE 6.4.

2. Impact

  1) If the /tmp cleanup is activated, any file or directory can be
  deleted by any local user

  2) If an attacker creates dot files in /tmp (e.g. bash profiles),
  these might be executed if someone uses e.g. "su - nobody" to
  switch to the nobody user. This can lead to a compromise of that
  userid.  This vulnerability is present in several other unix
  systems as well - please check all!

3. Solution

  1) Update the package from our FTP server.

  2) The root user will receive a email with the accounts listed
  which have a homedirectory in /tmp. You have to fix this by hand,
  because some installations might break if they rely on information
  saved in the (unsafe) /tmp homedirectory.
  The email will give more information what to do.
______________________________________________________________________________

Please verify these md5 checksums of the updates before installing:
(for SuSE 6.0 please use the 6.1 update rpm)

a8204a4929c139e895f3357021647daa
ftp://ftp.suse.com/pub/suse/axp/update/6.1/a1/aaa_base-2000.5.2-0.alpha.rpm
5dee42bd0f531922d0b17d859f3d0d0d
ftp://ftp.suse.com/pub/suse/axp/update/6.3/a1/aaa_base-2000.5.2-0.alpha.rpm
da8c74f80983beecf23baa62eea45142
ftp://ftp.suse.com/pub/suse/i386/update/6.1/a1/aaa_base-2000.5.2-0.i386.rpm
9618ec3ae63f4d80527a8e3b5f610fc1
ftp://ftp.suse.com/pub/suse/i386/update/6.2/a1/aaa_base-2000.5.2-0.i386.rpm
db53e002b6be652b31262bf89be0c31a
ftp://ftp.suse.com/pub/suse/i386/update/6.4/a1/aaa_base-2000.5.2-0.i386.rpm
488eda289876ba3c14dbffb881dc8726
ftp://ftp.suse.com/pub/suse/ppc/update/6.3/a1/aaa_base-2000.5.2-0.ppc.rpm
______________________________________________________________________________

You can find updates on our ftp-Server:

  ftp://ftp.suse.com/pub/suse/i386/update for Intel processors
  ftp://ftp.suse.com/pub/suse/axp/update  for Alpha processors

or try the following web pages for a list of mirrors:
  http://www.suse.de/ftp.html
  http://www.suse.com/ftp_new.html

Our webpage for patches:
  http://www.suse.de/patches/index.html

Our webpage for security announcements:
  http://www.suse.de/security

If you want to report vulnerabilities, please contact
  security@suse.de
______________________________________________________________________________

SuSE has got two free security mailing list services to which any
interested party may subscribe:

suse-security@suse.com          - moderated and for general/linux/SuSE
                                  security discussions. All SuSE security
                                  announcements are sent to this list.

suse-security-announce@suse.com - SuSE's announce-only mailing list.
                                  Only SuSE's security annoucements are sent
                                  to this list.

To subscribe to the list, send a message to:
     <suse-security-subscribe@suse.com>

To remove your address from the list, send a message to:
     <suse-security-unsubscribe@suse.com>

Send mail to the following for info and FAQ for this list:
     <suse-security-info@suse.com>
     <suse-security-faq@suse.com>

_____________________________________________________________________________

  This information is provided freely to everyone interested and may
  be redistributed provided that it is not altered in any way.

Type Bits/KeyID    Date       User ID
pub  2048/3D25D3D9 1999/03/06 SuSE Security Team <security@suse.de>

- -------BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.6.3i
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=pIeS
- -------END PGP PUBLIC KEY BLOCK-----

-----BEGIN PGP SIGNATURE-----
Version: 2.6.3i
Charset: noconv

iQEVAwUBOQ8zFney5gA9JdPZAQETWQgAj1oj1msj0y9+Cl1ej/g1mHMqq61rqaIM
8S1Gjj0k4QFw6QJTWsm1nQYavdGQMnkFA1Fo3XZe88IddIvcwuVM7gKBcJYKzNnn
62sYiSGAZyr3+pkmN/dpUiYZBQ9jVYus27gwX52hEjxMpYhX29GGKaW0jhr0x9L+
QzN/CeSkbM/Jz9MccDgKYNJyEqZNADG3SIvDFNJNUGmJvxmC18mIGdpwPfxGhaed
tDxYLfSWldWiQRtIQBi2H05vaCoiMWhpF8ltHQ0v05JW4TpDy4Z1ar4vBtU1koLU
L8+8rrlGvpzZlSGer0FyDG/LwsuE1qKFEBcBS+t8xJ0rB5QXuvb+EA==
=6lvV
-----END PGP SIGNATURE-----
(5060204) ------------------------------------------(Ombruten)