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             AUSCERT External Security Bulletin Redistribution

                         ESB-2006.0190 -- [Debian]
            New Crypt::CBC packages fix cryptographic weakness
                               14 March 2006

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           libcrypt-cbc-perl
Publisher:         Debian
Operating System:  Debian GNU/Linux 3.1
                   Debian GNU/Linux 3.0
Impact:            Reduced Security
Access:            Existing Account
CVE Names:         CVE-2006-0898

Original Bulletin: http://www.debian.org/security/2006/dsa-996

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Debian Security Advisory DSA 996-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
March 13th, 2006                        http://www.debian.org/security/faq
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Package        : libcrypt-cbc-perl
Vulnerability  : programming error
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2006-0898

Lincoln Stein discovered that the Perl Crypt::CBC module produces weak
ciphertext when used with block encryption algorithms with blocksize >
8 bytes.

The old stable distribution (woody) does not contain a Crypt::CBC module.

For the stable distribution (sarge) this problem has been fixed in
version 2.12-1sarge1.

For the unstable distribution (sid) this problem has been fixed in
version 2.17-1.

We recommend that you upgrade your libcrypt-cbc-perl package.


Upgrade Instructions
- - --------------------

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 3.1 alias sarge
- - --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/libc/libcrypt-cbc-perl/libcrypt-cbc-perl_2.12-1sarge1.dsc
      Size/MD5 checksum:      631 a30dd4cde44e3a484b28ad8fc1b67e38
    http://security.debian.org/pool/updates/main/libc/libcrypt-cbc-perl/libcrypt-cbc-perl_2.12-1sarge1.diff.gz
      Size/MD5 checksum:     4165 8bb65642884ea281f83026f2d98c6146
    http://security.debian.org/pool/updates/main/libc/libcrypt-cbc-perl/libcrypt-cbc-perl_2.12.orig.tar.gz
      Size/MD5 checksum:    11036 27842b8ab627681b4a322610ea6184b5

  Architecture independent components:

    http://security.debian.org/pool/updates/main/libc/libcrypt-cbc-perl/libcrypt-cbc-perl_2.12-1sarge1_all.deb
      Size/MD5 checksum:    18162 d625af2e10974eaafb007d538a90ebad


  These files will probably be moved into the stable distribution on
  its next update.

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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
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===========================================================================

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