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Gentoo Linux Security Advisory                           GLSA 200502-20
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                                            https://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:

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

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
https://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.

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