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________________________________________________________________________

                Mandrake Linux Security Update Advisory
________________________________________________________________________

Package name:           stunnel
Advisory ID:            MDKSA-2002:004
Date:                   January 16th, 2002
Affected versions:      8.1
________________________________________________________________________

Problem Description:

 All versions of stunnel from 3.15 to 3.21c are vulnerable to format
 string bugs in the functions which implement smtp, pop, and nntp client
 negotiations.  Using stunnel with the "-n service" option and the "-c"
 client mode option, a malicious server could use the format sting
 vulnerability to run arbitrary code as the owner of the current stunnel
 process.  Version 3.22 is not vulnerable to this bug.
________________________________________________________________________

References:

 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0002
 http://marc.theaimsgroup.com/?l=stunnel-users&m=100868569203440
 http://marc.theaimsgroup.com/?l=stunnel-users&m=100913948312986
________________________________________________________________________

Updated Packages:

 Mandrake Linux 8.1:
 08204f11728f2c6b6152de9ebb562ac5  8.1/RPMS/stunnel-3.22-1.1mdk.i586.rpm
 e85fbd3435759fa7b94bb5c371738b30  8.1/SRPMS/stunnel-3.22-1.1mdk.src.rpm

 Mandrake Linux 8.1/ia64:
 3616248cce2e982035b6905252610980  ia64/8.1/RPMS/stunnel-3.22-1.1mdk.ia64.rpm
 e85fbd3435759fa7b94bb5c371738b30  ia64/8.1/SRPMS/stunnel-3.22-1.1mdk.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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