Debian: New webcalendar packages fix information leak
 by Patrick Lenz, in Security - Mon, May 15th 2006 01:10 UTC

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. Fixed packages are available from security.debian.org.

Links: security.debian.org

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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
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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.

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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 ' and http://packages.debian.org/

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Referenced projects WebCalendar - A multi-user Web-based calendar.