Mailinglist Archive: opensuse-security (192 mails)

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RE: [suse-security] SuSE Security Announcement - aaa_base
  • From: "Bauer, Juergen" <Juergen.Bauer@xxxxxxxxx>
  • Date: Tue, 2 May 2000 10:34:58 +0200
  • Message-id: <E1655595ED52D21186F000A024A883C90EFFD6@xxxxxxxxxxxxxxxxxx>
hi folks,

i have a question concerning suse 6.3 and aaa_base-2000.1.3:

i already updated aaa_base to -2000.1.3 a few month ago.
is the package on the suse server a new one with the same version number ???

if it is the same, i just can edit /etc/passwd and change all /tmp homes to
/var/lib.

is that right ???

thanks in advance

jb


-----Urspr√ľngliche Nachricht-----
Von: marc@xxxxxxx [mailto:marc@xxxxxxx]
Gesendet am: Samstag, 29. April 2000 16:28
An: undisclosed-recipients
Betreff: [suse-security] SuSE Security Announcement - aaa_base

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

____________________________________________________________________________
__

SuSE Security Announcement

Package: aaabase < 2000.1.3
Date: Sat, 29 Apr 2000 14:03:28 GMT

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:

369c48687807875e9b01f24b6e6bb061
ftp://ftp.suse.com/pub/suse/axp/update/6.3/a1/aaa_base-2000.1.3-0.alpha.rpm
350cabc140a177dfa1909d356c982647
ftp://ftp.suse.com/pub/suse/i386/update/6.2/a1/aaa_base-99.9.8-0.i386.rpm
1b0ccf6db229d6c45692588d826853b7
ftp://ftp.suse.com/pub/suse/i386/update/6.3/a1/aaa_base-2000.1.3-0.i386.rpm
34ff11f9ffd877231fab6add4a1723dd
ftp://ftp.suse.com/pub/suse/i386/update/6.4/a1/aaa_base-2000.4.27-1.i386.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@xxxxxxx
____________________________________________________________________________
__

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

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

suse-security-announce@xxxxxxxx - 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@xxxxxxxx>

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

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

____________________________________________________________________________
_

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@xxxxxxx>

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