[SECURITY] Fedora 8 Update: dovecot-1.0.13-6.fc8

[updates at fedoraproject.org]

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Fedora Update Notification
FEDORA-2008-2464
2008-03-13 05:56:06
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Name        : dovecot
Product     : Fedora 8
Version     : 1.0.13
Release     : 6.fc8
URL         : http://www.dovecot.org/
Summary     : Dovecot Secure imap server
Description :
Dovecot is an IMAP server for Linux/UNIX-like systems, written with security
primarily in mind.  It also contains a small POP3 server.  It supports mail
in either of maildir or mbox formats.

The SQL drivers and authentication plugins are in their subpackages.

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Update Information:

This update upgrades dovecot from version 1.0.10 to 1.0.13.  Besides bug fixes,
two security issues were fixed upstream in version 1.0.11 and 1.0.13.
CVE-2008-1199  If Dovecot was configured with mail_extra_groups = mail, users
having shell access to IMAP server could use this flaw to read, modify or delete
mails of other users stored in inbox files in /var/mail.  /var/mail directory is
mail-group writable and user inbox files are by default created by useradd with
permission 660, <user>:mail.    No mail_extra_groups is set by default, hence
default Fedora configuration was not affected by this problem.  If your
configuration sets mail_extra_groups, see new options mail_privileged_group and
mail_access_groups introduced in Dovecot 1.0.11.  (mail_extra_groups is still
accepted, but is deprecated now)    CVE-2008-1218  On Dovecot versions 1.0.11
and newer, it was possible to gain password-less login via passwords with tab
characters, which were not filtered properly.    Dovecot versions in Fedora were
not affected by this unauthorized login flaw, but only by a related minor memory
leak in dovecot-auth worker process.  See referenced bugzilla for further
details about this flaw.
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ChangeLog:

* Sun Mar  9 2008 Tomas Janousek <tjanouse at redhat.com> - 1:1.0.13-6
- update to latest upstream stable (1.0.13)
* Mon Jan  7 2008 Tomas Janousek <tjanouse at redhat.com> - 1:1.0.10-4
- update to latest upstream stable (1.0.10)
* Wed Dec  5 2007 Jesse Keating <jkeating at redhat.com> - 1:1.0.7-3
- Bump for deps
* Mon Nov  5 2007 Tomas Janousek <tjanouse at redhat.com> - 1:1.0.7-2
- update to latest upstream stable (1.0.7)
- added the winbind patch (#286351)
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References:

  [ 1 ] Bug #436927 - CVE-2008-1199 dovecot: insecure mail_extra_groups option
        https://bugzilla.redhat.com/show_bug.cgi?id=436927
  [ 2 ] Bug #436928 - CVE-2008-1218 dovecot: unauthorized login
        https://bugzilla.redhat.com/show_bug.cgi?id=436928
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This update can be installed with the "yum" update program.  Use 
su -c 'yum update dovecot' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

All packages are signed with the Fedora Project GPG key.  More details on the
GPG keys used by the Fedora Project can be found at
http://fedoraproject.org/keys
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