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Mandrake: 'jmcce' Temporary file vulnerability Print E-mail
User Rating:      How can I rate this item?
Posted by LinuxSecurity.com Team   
Mandrake jmcce does not perform suitable checking on the files it writes to and because it uses a predictable logfile name, an attacker could exploit this to arbitrarily overwrite any file on the system.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

________________________________________________________________________

                Mandrake Linux Security Update Advisory
________________________________________________________________________

Package name:           jmcce
Advisory ID:            MDKSA-2002:008
Date:                   January 22nd, 2002
Affected versions:      8.1
________________________________________________________________________

Problem Description:

 A problem exists in the jmcce program that is used for Chinese text on
 the console.  jmcce is installed setuid root and places log files in
 /tmp; because jmcce does not perform suitable checking on the files it
 writes to and because it uses a predictable logfile name, an attacker
 could exploit this to arbitrarily overwrite any file on the system.
________________________________________________________________________

References:

________________________________________________________________________

Updated Packages:

 Mandrake Linux 8.1:
 fd002f1c3d0a054f51815734c3affa07  8.1/RPMS/jmcce-1.3-9.1mdk.i586.rpm
 edac902fd61b8f21072abb71e49d0fb3  8.1/SRPMS/jmcce-1.3-9.1mdk.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 

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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