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Mandrake: 'vixie-cron' buffer overflow Print E-mail
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Posted by LinuxSecurity.com Team   
Mandrake A buffer overflow exists in the 'crontab' command if it was called by a user with a username longer than 20 characters.

________________________________________________________________________

                Linux-Mandrake Security Update Advisory
________________________________________________________________________

Package name:           vixie-cron
Date:                   February 20th, 2001
Advisory ID:            MDKSA-2001:022

Affected versions:      6.0, 6.1, 7.0, 7.1, 7.2, Corporate Server 1.0.1
________________________________________________________________________

Problem Description:

 A buffer overflow exists in the 'crontab' command if it was called by
 a user with a username longer than 20 characters.  If the system
 administrator has created usernames of that length, it would be
 possible for those users to gain elevated privileges.
________________________________________________________________________

Please verify the update prior to upgrading to ensure the integrity of
the downloaded package.  You can do this with the command:
  rpm --checksig package.rpm
You can get the GPG public key of the Linux-Mandrake Security Team at
   http://www.linux-mandrake.com/en/security/RPM-GPG-KEYS
If you use MandrakeUpdate, the verification of md5 checksum and GPG
signature is performed automatically for you.

Linux-Mandrake 6.0:
66a027d9cee17d97e9ba22b2b325b71d  6.0/RPMS/vixie-cron-3.0.1-46.2mdk.i586.rpm
9ffeb80d6d94e9856806745f687fca94  6.0/SRPMS/vixie-cron-3.0.1-46.2mdk.src.rpm

Linux-Mandrake 6.1:
59f528e3b9ee285a474b3d846d276fd6  6.1/RPMS/vixie-cron-3.0.1-46.2mdk.i586.rpm
9ffeb80d6d94e9856806745f687fca94  6.1/SRPMS/vixie-cron-3.0.1-46.2mdk.src.rpm

Linux-Mandrake 7.0:
91f31ff40a0228024606a3083c6a533d  7.0/RPMS/vixie-cron-3.0.1-46.2mdk.i586.rpm
9ffeb80d6d94e9856806745f687fca94  7.0/SRPMS/vixie-cron-3.0.1-46.2mdk.src.rpm

Linux-Mandrake 7.1:
7ae591a9ab5ac2ad8fd6d542a49344e8  7.1/RPMS/vixie-cron-3.0.1-46.2mdk.i586.rpm
9ffeb80d6d94e9856806745f687fca94  7.1/SRPMS/vixie-cron-3.0.1-46.2mdk.src.rpm

Linux-Mandrake 7.2:
ad51423d9bcfa372640219d8e8e1f9ce  7.2/RPMS/vixie-cron-3.0.1-46.1mdk.i586.rpm
e5d9b834788aff2a287c4df949d6b999  7.2/SRPMS/vixie-cron-3.0.1-46.1mdk.src.rpm

Corporate Server 1.0.1:
7ae591a9ab5ac2ad8fd6d542a49344e8  1.0.1/RPMS/vixie-cron-3.0.1-46.2mdk.i586.rpm
9ffeb80d6d94e9856806745f687fca94  1.0.1/SRPMS/vixie-cron-3.0.1-46.2mdk.src.rpm
________________________________________________________________________

To upgrade automatically, use MandrakeUpdate.

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

You can download the updates directly from one of the mirror sites
listed at:

   http://www.linux-mandrake.com/en/ftp.php3.

Updated packages are available in the "updates/[ver]/RPMS/" directory.
For example, if you are looking for an updated RPM package for
Linux-Mandrake 7.2, look for it in "updates/7.2/RPMS/".  Updated source
RPMs are available as well, but you generally do not need to download
them.

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

You can view other security advisories for Linux-Mandrake at:

   http://www.linux-mandrake.com/en/security/

If you want to report vulnerabilities, please contact

  security@linux-mandrake.com
________________________________________________________________________

Linux-Mandrake has two security-related mailing list services that
anyone can subscribe to:

security-announce@linux-mandrake.com

  Linux-Mandrake's security announcements mailing list.  Only
  announcements are sent to this list and it is read-only.

security-discuss@linux-mandrake.com

  Linux-Mandrake's security discussion mailing list.  This list is open
  to anyone to discuss Linux-Mandrake security specifically and Linux
  security in general.

To subscribe to either list, send a message to
  sympa@linux-mandrake.com
with "subscribe [listname]" in the body of the message.

To remove yourself from either list, send a message to
  sympa@linux-mandrake.com
with "unsubscribe [listname]" in the body of the message.

To get more information on either list, send a message to
  sympa@linux-mandrake.com
with "info [listname]" in the body of the message.

Optionally, you can use the web interface to subscribe to or unsubscribe
from either list:

   http://www.linux-mandrake.com/en/flists.php3#security
________________________________________________________________________



 
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