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________________________________________________________________________

                Mandrake Linux Security Update Advisory
________________________________________________________________________

Package name:           nss_ldap
Advisory ID:            MDKSA-2002:075
Date:                   November 7th, 2002

Affected versions:      7.2, 8.0, 8.1, 8.2, 9.0,
                        Single Network Firewall 7.2
________________________________________________________________________

Problem Description:

 A buffer overflow vulnerability exists in nss_ldap versions prior to
 198.  When nss_ldap is configured without a value for the "host"
 keyword, it attempts to configure itself using SRV records stored in
 DNS.  nss_ldap does not check that the data returned by the DNS query
 will fit into an internal buffer, thus exposing it to an overflow.
 
 A similar issue exists in versions of nss_ldap prior to 199 where
 nss_ldap does not check that the data returned by the DNS query has not
 been truncated by the resolver libraries to avoid a buffer overflow.
 This can make nss_ldap attempt to parse more data than what is actually
 available, making it vulnerable to a read buffer overflow.
 
 Finally, a format string bug in the logging function of pam_ldap prior
 to version 144 exist.
 
 All users are recommended to upgrade to these updated packages.  Note
 that the nss_ldap packages for 7.2, 8.0, and Single Network Firewall
 7.2 contain the pam_ldap modules.
________________________________________________________________________

References:
  
  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0825
  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0374
  http://www.kb.cert.org/vuls/id/738331
  http://www.padl.com/Articles/PotentialBufferOverflowin.html
________________________________________________________________________

Updated Packages:
  
 Linux-Mandrake 7.2:
 cc7940dc14b61c6bb8a289242a415c39  7.2/RPMS/nss_ldap-202-1.2mdk.i586.rpm
 fa83615155165f38c3a691767c4d5455  7.2/SRPMS/nss_ldap-202-1.2mdk.src.rpm

 Mandrake Linux 8.0:
 eb3adc4ce19d132339392c45a5f63a87  8.0/RPMS/nss_ldap-202-1.2mdk.i586.rpm
 fa83615155165f38c3a691767c4d5455  8.0/SRPMS/nss_ldap-202-1.2mdk.src.rpm

 Mandrake Linux 8.0/PPC:
 9e06d1d1e8efcf2ab3e7646fb182edfe  ppc/8.0/RPMS/nss_ldap-202-1.2mdk.ppc.rpm
 fa83615155165f38c3a691767c4d5455  ppc/8.0/SRPMS/nss_ldap-202-1.2mdk.src.rpm

 Mandrake Linux 8.1:
 d0b134533498411ff84c23c445325d09  8.1/RPMS/nss_ldap-202-1.1mdk.i586.rpm
 376bd2062e8fb2128008bc6075bae8d1  8.1/RPMS/pam_ldap-156-1.1mdk.i586.rpm
 85ec640296bd1cb5808f9beb7db3a566  8.1/SRPMS/nss_ldap-202-1.1mdk.src.rpm

 Mandrake Linux 8.1/IA64:
 3e44766f48622b70a4de7b66b959a857  ia64/8.1/RPMS/nss_ldap-202-1.1mdk.ia64.rpm
 f22145546bff2930131da1b2503692ce  ia64/8.1/RPMS/pam_ldap-156-1.1mdk.ia64.rpm
 85ec640296bd1cb5808f9beb7db3a566  ia64/8.1/SRPMS/nss_ldap-202-1.1mdk.src.rpm

 Mandrake Linux 8.2:
 77cdc3912443eadf59ca53284d0340e2  8.2/RPMS/nss_ldap-202-1.1mdk.i586.rpm
 16b952b71669460c7c4b9441b37e2014  8.2/RPMS/pam_ldap-156-1.1mdk.i586.rpm
 85ec640296bd1cb5808f9beb7db3a566  8.2/SRPMS/nss_ldap-202-1.1mdk.src.rpm

 Mandrake Linux 8.2/PPC:
 b5f7f6eab56f68ba432267dc2e84c206  ppc/8.2/RPMS/nss_ldap-202-1.1mdk.ppc.rpm
 0b73c3aba3ab7bdd2548a69934fa79f0  ppc/8.2/RPMS/pam_ldap-156-1.1mdk.ppc.rpm
 85ec640296bd1cb5808f9beb7db3a566  ppc/8.2/SRPMS/nss_ldap-202-1.1mdk.src.rpm

 Mandrake Linux 9.0:
 da577902f504bf8f345446635fcc3cf7  9.0/RPMS/nss_ldap-202-1.1mdk.i586.rpm
 b70c25f7b8a3b5f86149dd199003a4ff  9.0/RPMS/pam_ldap-156-1.1mdk.i586.rpm
 85ec640296bd1cb5808f9beb7db3a566  9.0/SRPMS/nss_ldap-202-1.1mdk.src.rpm

 Single Network Firewall 7.2:
 cc7940dc14b61c6bb8a289242a415c39  snf7.2/RPMS/nss_ldap-202-1.2mdk.i586.rpm
 fa83615155165f38c3a691767c4d5455  snf7.2/SRPMS/nss_ldap-202-1.2mdk.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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