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Gentoo Linux Security Advisory                           GLSA 201006-08
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: nano: Multiple vulnerabilities
      Date: June 01, 2010
      Bugs: #315355
        ID: 201006-08

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Synopsis
========

Race conditions when editing files could lead to symlink attacks or
changes of ownerships of important files.

Background
==========

nano is a GNU GPL'd Pico clone with more functionality.

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

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  app-editors/nano       < 2.2.4                           >= 2.2.4

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

Multiple race condition vulnerabilities have been discovered in nano.
For further information please consult the CVE entries referenced
below.

Impact
======

Under certain conditions, a local, user-assisted attacker could
possibly overwrite arbitrary files via a symlink attack on an
attacker-owned file that is being edited by the victim, or change the
ownership of arbitrary files.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All nano users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-editors/nano-2.2.4"

References
==========

  [ 1 ] CVE-2010-1160
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-1160
  [ 2 ] CVE-2010-1161
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-1161

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

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

  http://security.gentoo.org/glsa/glsa-201006-08.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
https://bugs.gentoo.org.

License
=======

Copyright 2010 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