[ GLSA 200510-10 ] uw-imap: Remote buffer overflow

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200510-10
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                                            http://security.gentoo.org/
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  Severity: High
     Title: uw-imap: Remote buffer overflow
      Date: October 11, 2005
      Bugs: #108206
        ID: 200510-10

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Synopsis
========

uw-imap is vulnerable to remote overflow of a buffer in the IMAP server
leading to execution of arbitrary code.

Background
==========

uw-imap is the University of Washington's IMAP and POP server daemons.

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

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  net-mail/uw-imap       < 2004g                           >= 2004g

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

Improper bounds checking of user supplied data while parsing IMAP
mailbox names can lead to overflowing the stack buffer.

Impact
======

Successful exploitation requires an authenticated IMAP user to request
a malformed mailbox name. This can lead to execution of arbitrary code
with the permissions of the IMAP server.

Workaround
==========

There are no known workarounds at this time.

Resolution
==========

All uw-imap users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-mail/uw-imap-2004g"

References
==========

  [ 1 ] CAN-2005-2933
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2933
  [ 2 ] iDEFENSE Security Advisory

http://www.idefense.com/application/poi/display?id=313&type=vulnerabilities&flashstatus=false

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

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

  http://security.gentoo.org/glsa/glsa-200510-10.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 () 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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