SuSE: Update: aaabase < 2000.5.2

    Date02 May 2000
    CategorySuSE
    2346
    Posted ByLinuxSecurity Advisories
    aaa_base is the basic package which comes with any SuSE Linux installation. Corrections to cron scripts and default directories have been made.
    -----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
      This email address is being protected from spambots. You need JavaScript enabled to view it.
    	
    ______________________________________________________________________________
    
    SuSE has got two free security mailing list services to which any
    interested party may subscribe:
    
    This email address is being protected from spambots. You need JavaScript enabled to view it.          - moderated and for general/linux/SuSE
                                      security discussions. All SuSE security
                                      announcements are sent to this list.
    
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                                      Only SuSE's security annoucements are sent
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    _____________________________________________________________________________
    
      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 
    
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