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                                  CERT-Renater

                       Note d'Information No. 2005/VULN451
_____________________________________________________________________

DATE                      : 27/07/2005

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running webcalendar.

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- --------------------------------------------------------------------------
Debian Security Advisory DSA 766-1                     security at debian.org
http://www.debian.org/security/                             Martin Schulze
July 26th, 2005                         http://www.debian.org/security/faq
- --------------------------------------------------------------------------

Package        : webcalendar
Vulnerability  : authorisation failure
Problem-Type   : remote
Debian-specific: no
CVE ID         : CAN-2005-2320
BugTraq ID     : 14072
Debian Bug     : 315671

A vulnerability has been discovered in webcalendar, a PHP based
multi-user calendar, that can lead to the disclosure of sensitive
information to unauthorised parties.

the old stable distribution (woody) does not contain the webcalendar package.

For the stable distribution (sarge) this problem has been fixed in
version 0.9.45-4sarge1.

For the unstable distribution (sid) this problem has been fixed in
version 0.9.45-6.

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_0.9.45-4sarge1.dsc
       Size/MD5 checksum:      607 d5030eb9186aa90e841a4ca395da6a3a
     http://security.debian.org/pool/updates/main/w/webcalendar/webcalendar_0.9.45-4sarge1.diff.gz
       Size/MD5 checksum:     9808 80408685999e6f85c279a187697d194d
     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_0.9.45-4sarge1_all.deb
       Size/MD5 checksum:   628586 4d2edb921316272f6ad043153bf1757a


   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 at 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     +
         =========================================================