[Full-Disclosure] [ GLSA 200502-29 ] Cyrus IMAP Server: Multiple overflow vulnerabilities

[Matthias Geerdsen]

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Gentoo Linux Security Advisory                           GLSA 200502-29
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Cyrus IMAP Server: Multiple overflow vulnerabilities
      Date: February 23, 2005
      Bugs: #82404
        ID: 200502-29

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Synopsis
========

The Cyrus IMAP Server is affected by several overflow vulnerabilities
which could potentially lead to the remote execution of arbitrary
code.

Background
==========

The Cyrus IMAP Server is an efficient, highly-scalable IMAP e-mail
server.

Affected packages
=================

    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  net-mail/cyrus-imapd      < 2.2.12                      >= 2.2.12

Description
===========

Possible single byte overflows have been found in the imapd annotate
extension and mailbox handling code. Furthermore stack buffer overflows
have been found in fetchnews, the backend and imapd.

Impact
======

An attacker, who could be an authenticated user or an admin of a
peering news server, could exploit these vulnerabilities to execute
arbitrary code with the rights of the user running the Cyrus IMAP
Server.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Cyrus IMAP Server users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-mail/cyrus-imapd-2.2.12"

References
==========

  [ 1 ] Cyrus IMAP Announcement
        http://asg.web.cmu.edu/archive/message.php?mailbox=archive.info-cyrus&msg=33723

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200502-29.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security at gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0

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