Otkriveni su višestruki sigurnosni nedostaci u radu programskog paketa Dovecot. Moguće ih je iskoristiti za izvođenje DoS napada, pokretanje proizvoljnog programskog koda, zaobilaženje postavljenih ograničenja i pristup osjetljivim podacima.

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Gentoo Linux Security Advisory                           GLSA 201110-04
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                                            http://security.gentoo.org/
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 Severity: High
    Title: Dovecot: Multiple vulnerabilities
     Date: October 10, 2011
     Bugs: #286844, #293954, #314533, #368653
       ID: 201110-04

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Synopsis
========

Multiple vulnerabilities were found in Dovecot, the worst of which
allowing for remote execution of arbitrary code.

Background
==========

Dovecot is an IMAP and POP3 server written with security primarily in
mind.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-mail/dovecot             < 2.0.13                 *>= 1.2.17
                                                            >= 2.0.13

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

Multiple vulnerabilities have been discovered in Dovecot. Please review
the CVE identifiers referenced below for details.

Impact
======

A remote attacker could exploit these vulnerabilities to cause the
remote execution of arbitrary code, or a Denial of Service condition,
to conduct directory traversal attacks, corrupt data, or disclose
information.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Dovecot 1 users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-mail/dovecot-1.2.17"

All Dovecot 2 users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-mail/dovecot-2.0.13"

NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since May 28, 2011. It is likely that your system is already
no longer affected by this issue.

References
==========

[  1 ] CVE-2009-3235
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3235
[  2 ] CVE-2009-3897
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3897
[  3 ] CVE-2010-0745
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0745
[  4 ] CVE-2010-3304
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3304
[  5 ] CVE-2010-3706
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3706
[  6 ] CVE-2010-3707
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3707
[  7 ] CVE-2010-3779
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3779
[  8 ] CVE-2010-3780
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3780
[  9 ] CVE-2011-1929
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1929
[ 10 ] CVE-2011-2166
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2166
[ 11 ] CVE-2011-2167
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2167

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

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

 http://security.gentoo.org/glsa/glsa-201110-04.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
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License
=======

Copyright 2011 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/2.5