Mandrake: 'fetchmail' buffer overflow vulnerability
Posted by LinuxSecurity.com Team   
Mandrake A buffer overflow exists in the header parsing code which can be exploited remotely.

________________________________________________________________________

                Mandrake Linux Security Update Advisory
________________________________________________________________________

Package name:           fetchmail
Date:                   July 5th, 2001
Advisory ID:            MDKSA-2001:063

Affected versions:      7.1, 7.2, 8.0, Corporate Server 1.0.1,
                        Single Network Firewall 7.2
________________________________________________________________________

Problem Description:

 Wolfram Kleff reported recently that the fetchmail program would
 segfault when receiving emails with a very large "To:" header.  This is
 due to a buffer overflow within the header parsing code, which can be
 exploited remotely.
________________________________________________________________________

References:

  http://bugs.debian.org/100394
________________________________________________________________________

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 Mandrake Linux 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 7.1:
dde4353600605b2c7007e66084a2adbc  7.1/RPMS/fetchmail-5.3.8-4.1mdk.i586.rpm
799409e78645f9bace3e19bcf5e499f3  7.1/RPMS/fetchmailconf-5.3.8-4.1mdk.i586.rpm
0ec22d1bd0d69c5942e5ceb9a24a7a1e  7.1/SRPMS/fetchmail-5.3.8-4.1mdk.src.rpm

Linux-Mandrake 7.2:
f9726971c69d2c305e47896fec5f1c3d  7.2/RPMS/fetchmail-5.5.2-5.1mdk.i586.rpm
c8ae081f14e5c7fc0007a459e81b9229  7.2/RPMS/fetchmail-daemon-5.5.2-5.1mdk.i586.rpm
873ce5f00faada719f061d109351fe73  7.2/RPMS/fetchmailconf-5.5.2-5.1mdk.i586.rpm
bacf55efa2adb11a4669afe2ade7284b  7.2/SRPMS/fetchmail-5.5.2-5.1mdk.src.rpm

Mandrake Linux 8.0:
3b1e12c828e28e9a31947bf5046a59d0  8.0/RPMS/fetchmail-5.7.4-5.1mdk.i586.rpm
d4efb43e905b1e7039b407a6649c2812  8.0/RPMS/fetchmail-daemon-5.7.4-5.1mdk.i586.rpm
18f72c84c4eeb6740ebcd71825a0605a  8.0/RPMS/fetchmailconf-5.7.4-5.1mdk.i586.rpm
94b828fda9cf2d223a81399f135c42ca  8.0/SRPMS/fetchmail-5.7.4-5.1mdk.src.rpm

Corporate Server 1.0.1:
dde4353600605b2c7007e66084a2adbc  1.0.1/RPMS/fetchmail-5.3.8-4.1mdk.i586.rpm
799409e78645f9bace3e19bcf5e499f3  1.0.1/RPMS/fetchmailconf-5.3.8-4.1mdk.i586.rpm
0ec22d1bd0d69c5942e5ceb9a24a7a1e  1.0.1/SRPMS/fetchmail-5.3.8-4.1mdk.src.rpm

Single Network Firewall 7.2:
f9726971c69d2c305e47896fec5f1c3d  snf7.2/RPMS/fetchmail-5.5.2-5.1mdk.i586.rpm
c8ae081f14e5c7fc0007a459e81b9229  snf7.2/RPMS/fetchmail-daemon-5.5.2-5.1mdk.i586.rpm
873ce5f00faada719f061d109351fe73  snf7.2/RPMS/fetchmailconf-5.5.2-5.1mdk.i586.rpm
bacf55efa2adb11a4669afe2ade7284b  snf7.2/SRPMS/fetchmail-5.5.2-5.1mdk.src.rpm
________________________________________________________________________

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

________________________________________________________________________

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
Mandrake Linux 8.0, look for it in "updates/8.0/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 Mandrake Linux at:

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

If you want to report vulnerabilities, please contact

  security@linux-mandrake.com
________________________________________________________________________

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

security-announce@linux-mandrake.com

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

security-discuss@linux-mandrake.com

  Mandrake Linux's security discussion mailing list.  This list is open
  to anyone to discuss Mandrake Linux 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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