[ GLSA 201006-08 ] nano: Multiple vulnerabilities

[Tobias Heinlein <keytoaster () gentoo org>]

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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

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