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                                    CERT-Renater

                         Note d'Information No. 2006/VULN252
_____________________________________________________________________

DATE                      : 16/05/2006

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running webcalendar.

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- --------------------------------------------------------------------------
Debian Security Advisory DSA 1056-1                    security@debian.org
http://www.debian.org/security/                             Martin Schulze
May 15th, 2006                          http://www.debian.org/security/faq
- --------------------------------------------------------------------------

Package        : webcalendar
Vulnerability  : verbose error message
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2006-2247
Debian Bug     : 366927

David Maciejak noticed that webcalendar, a PHP-Based multi-user
calendar, returns different error messages on login attempts for an
invalid password and a non-existing user, allowing remote attackers to
gain information about valid usernames.

The old stable distribution (woody) does not contain a webcalendar package

For the stable distribution (sarge) this problem has been fixed in
version 0.9.45-4sarge4.

For the unstable distribution (sid) this problem will be fixed soon.

We recommend that you upgrade your webcalendar 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/w/webcalendar/webcalendar_0.9.45-4sarge4.dsc
       Size/MD5 checksum:      610 1a88e45355b0ca1a474eba42ac6c8eb4
 
http://security.debian.org/pool/updates/main/w/webcalendar/webcalendar_0.9.45-4sarge4.diff.gz
       Size/MD5 checksum:    12135 a518268d52b8a4744dd31ae9a7b60d0c
 
http://security.debian.org/pool/updates/main/w/webcalendar/webcalendar_0.9.45.orig.tar.gz
       Size/MD5 checksum:   612360 a6a66dc54cd293429b604fe6da7633a6

   Architecture independent components:

 
http://security.debian.org/pool/updates/main/w/webcalendar/webcalendar_0.9.45-4sarge4_all.deb
       Size/MD5 checksum:   629232 c83c6d64bf495a79cc6fad26b68708e0


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

- ---------------------------------------------------------------------------------
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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           =========================================================
           Les serveurs de référence du CERT-Renater
           http://www.urec.fr/securite
           http://www.cru.fr/securite
           http://www.renater.fr
           =========================================================
           + CERT-RENATER          | tel : 01-53-94-20-44          +
           + 151 bd de l'Hopital   | fax : 01-53-94-20-41          +
           + 75013 Paris           | email: certsvp@renater.fr     +
           =========================================================