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________________________________________________________________________

                Mandrake Linux Security Update Advisory
________________________________________________________________________

Package name:           at
Advisory ID:            MDKSA-2002:007
Date:                   January 18th, 2002
Affected versions:      8.1
________________________________________________________________________

Problem Description:

 zen-parse discovered a problem in the at command containing an extra
 call to free() which can lead to a segfault with a carefully crafted,
 but incorrect, format.  This is caused due to a heap corruption that
 can be exploited under certain circumstances because the at command is
 installed setuid root.  Thanks to SuSE for an additional security
 improvement that ads the O_EXCL (exclusive) option to the open(2)
 system call inside the at code.
________________________________________________________________________

References:

________________________________________________________________________

Updated Packages:

 Mandrake Linux 8.1:
 066814fda6dfc8f74721861a90c1d167  8.1/RPMS/at-3.1.8-4.1mdk.i586.rpm
 8205596ce7b87d8dca57a6d9285dd1d1  8.1/SRPMS/at-3.1.8-4.1mdk.src.rpm

 Mandrake Linux 8.1/ia64:
 bc46bc259124e1de45063503d8be2940  ia64/8.1/RPMS/at-3.1.8-4.1mdk.ia64.rpm
 8205596ce7b87d8dca57a6d9285dd1d1  ia64/8.1/SRPMS/at-3.1.8-4.1mdk.src.rpm
________________________________________________________________________

Bug IDs fixed (see https://qa.mandrakesoft.com for more information):

________________________________________________________________________

To upgrade automatically, use MandrakeUpdate.  The verification of md5
checksums and GPG signatures is performed automatically for you.

If you want to upgrade manually, download the updated package from one 
of our FTP server mirrors and upgrade with "rpm -Fvh *.rpm".  A list of
FTP mirrors can be obtained from:

  http://www.mandrakesecure.net/en/ftp.php

Please verify the update prior to upgrading to ensure the integrity of
the downloaded package.  You can do this with the command:

  rpm --checksig <filename>

All packages are signed by MandrakeSoft for security.  You can obtain
the GPG public key of the Mandrake Linux Security Team from:

  https://www.mandrakesecure.net/RPM-GPG-KEYS

Please be aware that sometimes it takes the mirrors a few hours to 
update.

You can view other update advisories for Mandrake Linux at:

  http://www.mandrakesecure.net/en/advisories/

MandrakeSoft has several security-related mailing list services that
anyone can subscribe to.  Information on these lists can be obtained by
visiting:

  http://www.mandrakesecure.net/en/mlist.php

If you want to report vulnerabilities, please contact

  security@linux-mandrake.com
________________________________________________________________________

Type Bits/KeyID     Date       User ID
pub  1024D/22458A98 2000-07-10 Linux Mandrake Security Team
  <security@linux-mandrake.com>


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