Mandrake: dhcp vulnerability
Posted by LinuxSecurity.com Team   
Mandrake All versions of the ISC DHCP client program, dhclient, are vulnerable to a root attack by a corrupt DHCP server.
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________________________________________________________________________

                Linux-Mandrake Security Update Advisory
________________________________________________________________________

Package name:           dhcp
Date:                   August 25th, 2000
Original Advisory Date: July 21st, 2000
Advisory ID:            MDKSA-2000:022-1

Affected versions:      7.0, 7.1
________________________________________________________________________

Problem Description:

 All versions of the ISC DHCP client program, dhclient, are vulnerable
 to a root attack by a corrupt DHCP server.  This version fixes the
 vulnerability.  Versions of Linux Mandrake prior to 7.0, while 
 including the ISC DHCP server, do not include the DHCP client and are
 therefore not subject to this vulnerability.

Update:

 There was a problem with the post installation script for the updated
 packages.  Please use the following packages instead.
________________________________________________________________________

Please verify these md5 checksums of the updates prior to upgrading to
ensure the integrity of the downloaded package.  You can do this by
running the md5sum program on the downloaded package by using
"md5sum package.rpm".

Linux-Mandrake 7.0:
cae2d18aa7570b1bad60336d260d66a6  7.0/RPMS/dhcp-3.0b1pl17-4mdk.i586.rpm
2f47628c88ed42da3092865fbf0a89bf  7.0/RPMS/dhcp-client-3.0b1pl17-4mdk.i586.rpm
7b1a6fc8e6db2c47f0594624c34e2281  7.0/RPMS/dhcp-relay-3.0b1pl17-4mdk.i586.rpm
c259f7a00f33c1ef361b74742cb3aacc  7.0/SRPMS/dhcp-3.0b1pl17-4mdk.src.rpm

Linux-Mandrake 7.1:
4f2f37a909a2ef1d7eb1d88cbc4a6818  7.1/RPMS/dhcp-3.0b1pl17-4mdk.i586.rpm
98f0af1d47eb5df843c5b3f9ac33d4e9  7.1/RPMS/dhcp-client-3.0b1pl17-4mdk.i586.rpm
f9134ba5c1c2c1fe877a9f0cc9554a5e  7.1/RPMS/dhcp-relay-3.0b1pl17-4mdk.i586.rpm
c259f7a00f33c1ef361b74742cb3aacc  7.1/SRPMS/dhcp-3.0b1pl17-4mdk.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 uprade with "rpm -Uvh package_name".  

You can download the updates directly from:
   ftp://ftp.linux.tucows.com/pub/distributions/Mandrake/Mandrake/updates
   ftp://ftp.free.fr/pub/Distributions_Linux/Mandrake/updates

Or try one of the other mirrors 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 7.1, look for it in "updates/7.1/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, so if you want an immediate upgrade, please use one of the two 
above-listed mirrors.

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

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

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
________________________________________________________________________

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


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