[ GLSA 200502-20 ] Emacs, XEmacs: Format string vulnerabilities in movemail

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200502-20
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Emacs, XEmacs: Format string vulnerabilities in movemail
      Date: February 15, 2005
      Bugs: #79686
        ID: 200502-20

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Synopsis
========

The movemail utility shipped with Emacs and XEmacs contains several
format string vulnerabilities, potentially leading to the execution of
arbitrary code.

Background
==========

GNU Emacs and XEmacs are highly extensible and customizable text
editors. movemail is an Emacs utility that can fetch mail on remote
mail servers.

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

    -------------------------------------------------------------------
     Package             /   Vulnerable   /                 Unaffected
    -------------------------------------------------------------------
  1  app-editors/emacs         < 21.4                          >= 21.4
  2  app-editors/xemacs     < 21.4.15-r3                 >= 21.4.15-r3
    -------------------------------------------------------------------
     2 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

Max Vozeler discovered that the movemail utility contains several
format string errors.

Impact
======

An attacker could set up a malicious POP server and entice a user to
connect to it using movemail, resulting in the execution of arbitrary
code with the rights of the victim user.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Emacs users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-editors/emacs-21.4"

All XEmacs users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-editors/xemacs-21.4.15-r3"

References
==========

  [ 1 ] CAN-2005-0100
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0100

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

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

  http://security.gentoo.org/glsa/glsa-200502-20.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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