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                                  CERT-Renater

                       Note d'Information No. 2005/VULN191
_____________________________________________________________________

DATE                      : 16/03/2005

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running gnupg.

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  _______________________________________________________________________

                  Mandrakelinux Security Update Advisory
  _______________________________________________________________________

  Package name:           gnupg
  Advisory ID:            MDKSA-2005:057
  Date:                   March 15th, 2005

  Affected versions:	 10.0, 10.1, 9.2, Corporate 3.0,
			 Corporate Server 2.1
  ______________________________________________________________________

  Problem Description:

  The OpenPGP protocol is vulnerable to a timing-attack in order to
  gain plain text from cipher text.  The timing difference appears as a
  side effect of the so-called "quick scan" and is only exploitable on
  systems that accept an arbitrary amount of cipher text for automatic
  decryption.

  The updated packages have been patched to disable the quick check for
  all public key-encrypted messages and files.
  _______________________________________________________________________

  References:

   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0366
   http://www.kb.cert.org/vuls/id/303094
   http://www.pgp.com/library/ctocorner/openpgp.html
  ______________________________________________________________________

  Updated Packages:

  Mandrakelinux 10.0:
  e417191838d8efce573d72c1a23985f5  10.0/RPMS/gnupg-1.2.4-1.1.100mdk.i586.rpm
  86351de46dfb9269582e3ff077c1cbfd  10.0/SRPMS/gnupg-1.2.4-1.1.100mdk.src.rpm

  Mandrakelinux 10.0/AMD64:
  df0f82dbd6e158e0ed5147cb39e16d8a  amd64/10.0/RPMS/gnupg-1.2.4-1.1.100mdk.amd64.rpm
  86351de46dfb9269582e3ff077c1cbfd  amd64/10.0/SRPMS/gnupg-1.2.4-1.1.100mdk.src.rpm

  Mandrakelinux 10.1:
  e5c5e11c18532a11b3f17df2f4a8d0f0  10.1/RPMS/gnupg-1.2.4-1.1.101mdk.i586.rpm
  6616d6b33665b0b61b3ba60ea4edb7b7  10.1/SRPMS/gnupg-1.2.4-1.1.101mdk.src.rpm

  Mandrakelinux 10.1/X86_64:
  0f912bf60b3aa5657f1d70ac1321877c  x86_64/10.1/RPMS/gnupg-1.2.4-1.1.101mdk.x86_64.rpm
  6616d6b33665b0b61b3ba60ea4edb7b7  x86_64/10.1/SRPMS/gnupg-1.2.4-1.1.101mdk.src.rpm

  Corporate Server 2.1:
  9a94f8178b38d21436776157a8dc64fa  corporate/2.1/RPMS/gnupg-1.0.7-3.3.C21mdk.i586.rpm
  7feb5108aab575ca5a236257cb6381bf  corporate/2.1/SRPMS/gnupg-1.0.7-3.3.C21mdk.src.rpm

  Corporate Server 2.1/X86_64:
  54fe5bb44107b7e3e61b36497a911bc3  x86_64/corporate/2.1/RPMS/gnupg-1.0.7-3.3.C21mdk.x86_64.rpm
  7feb5108aab575ca5a236257cb6381bf  x86_64/corporate/2.1/SRPMS/gnupg-1.0.7-3.3.C21mdk.src.rpm

  Corporate 3.0:
  e95d4dd1787d1b371c554ac29c840ae4  corporate/3.0/RPMS/gnupg-1.2.4-1.1.C30mdk.i586.rpm
  78db8f8ecd2709c17b0700b22d74f227  corporate/3.0/SRPMS/gnupg-1.2.4-1.1.C30mdk.src.rpm

  Corporate 3.0/X86_64:
  c9fcb2074b56249ccbb1456a4fffea4e  x86_64/corporate/3.0/RPMS/gnupg-1.2.4-1.1.C30mdk.x86_64.rpm
  78db8f8ecd2709c17b0700b22d74f227  x86_64/corporate/3.0/SRPMS/gnupg-1.2.4-1.1.C30mdk.src.rpm

  Mandrakelinux 9.2:
  eea8f872b37b44e323121f8f06e055a5  9.2/RPMS/gnupg-1.2.3-3.2.92mdk.i586.rpm
  4853be0ffaeb03b0bc78bd361342d5ed  9.2/SRPMS/gnupg-1.2.3-3.2.92mdk.src.rpm

  Mandrakelinux 9.2/AMD64:
  cd27f63d89d9850c25f3e36968dc120f  amd64/9.2/RPMS/gnupg-1.2.3-3.2.92mdk.amd64.rpm
  4853be0ffaeb03b0bc78bd361342d5ed  amd64/9.2/SRPMS/gnupg-1.2.3-3.2.92mdk.src.rpm
  _______________________________________________________________________

  To upgrade automatically use MandrakeUpdate or urpmi.  The verification
  of md5 checksums and GPG signatures is performed automatically for you.

  All packages are signed by Mandrakesoft for security.  You can obtain
  the GPG public key of the Mandrakelinux Security Team by executing:

   gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

  You can view other update advisories for Mandrakelinux at:

   http://www.mandrakesoft.com/security/advisories

  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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